win: unrecommend and document Live ID service #100

Rename service to its newer name. Mention breaking behavior in its name
and add more documentation.

Unrecommended from "Standard" pool because it breaks a lot of
functionality, but still recomended in "Stricts" because it's used to
identify personal information that leads to less privacy.

.editorconfig

@@ -0,0 +1,7 @@
+[*.{js,jsx,ts,tsx,vue}]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 100

.eslintrc.js

@@ -0,0 +1,115 @@
+const { rules: baseStyleRules } = require('eslint-config-airbnb-base/rules/style');
+
+module.exports = {
+  root: true,
+  env: {
+    node: true,
+  },
+  extends: [
+    // Vue specific rules, eslint-plugin-vue
+    // Added by Vue CLI
+    'plugin:vue/essential',
+
+    // Extends eslint-config-airbnb
+    // Added by Vue CLI
+    // Here until https://github.com/vuejs/eslint-config-airbnb/issues/23 is done
+    '@vue/airbnb',
+
+    // Extends @typescript-eslint/recommended
+    // Uses the recommended rules from the @typescript-eslint/eslint-plugin
+    // Added by Vue CLI
+    '@vue/typescript/recommended',
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest',
+  },
+  rules: {
+    ...getOwnRules(),
+    ...getTurnedOffBrokenRules(),
+    ...getOpinionatedRuleOverrides(),
+    ...getTodoRules(),
+  },
+  overrides: [
+    {
+      files: [
+        '**/__tests__/*.{j,t}s?(x)',
+        '**/tests/unit/**/*.spec.{j,t}s?(x)',
+      ],
+      env: {
+        mocha: true,
+      },
+    },
+    {
+      files: ['**/tests/**/*.{j,t}s?(x)'],
+      rules: {
+        'no-console': 'off',
+      },
+    },
+  ],
+};
+
+function getOwnRules() {
+  return {
+    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
+    'linebreak-style': ['error', 'unix'], // This is also enforced in .editorconfig and .gitattributes files
+    'import/order': [ // Enforce strict import order taking account into aliases
+      'error',
+      {
+        groups: [ // Enforce more strict order than AirBnb
+          'builtin', 'external', 'internal', 'parent', 'sibling', 'index', 'object', 'type'],
+        pathGroups: [ // Fix manually configured paths being incorrectly grouped as "external"
+          '@/**', // @/..
+          '@tests/**', // @tests/.. (not matching anything after @** because there can be third parties as well)
+          'js-yaml-loader!@/**', // E.g. js-yaml-loader!@/..
+        ].map((pattern) => ({ pattern, group: 'internal' })),
+      },
+    ],
+  };
+}
+
+function getTodoRules() { // Should be worked on separate future commits
+  return {
+    'import/no-extraneous-dependencies': 'off',
+    // Requires webpack configuration change with import '..yaml' files.
+    'import/no-webpack-loader-syntax': 'off',
+    'import/extensions': 'off',
+    'import/no-unresolved': 'off',
+    // Accessibility improvements:
+    'vuejs-accessibility/form-control-has-label': 'off',
+    'vuejs-accessibility/click-events-have-key-events': 'off',
+    'vuejs-accessibility/anchor-has-content': 'off',
+    'vuejs-accessibility/accessible-emoji': 'off',
+  };
+}
+
+function getTurnedOffBrokenRules() {
+  return {
+    // Broken in TypeScript
+    'no-useless-constructor': 'off', // Cannot interpret TypeScript constructors
+    'no-shadow': 'off', // Fails with TypeScript enums
+  };
+}
+
+function getOpinionatedRuleOverrides() {
+  return {
+    // https://erkinekici.com/articles/linting-trap#no-use-before-define
+    'no-use-before-define': 'off',
+    // https://erkinekici.com/articles/linting-trap#arrow-body-style
+    'arrow-body-style': 'off',
+    // https://erkinekici.com/articles/linting-trap#no-plusplus
+    'no-plusplus': 'off',
+    // https://erkinekici.com/articles/linting-trap#no-param-reassign
+    'no-param-reassign': 'off',
+    // https://erkinekici.com/articles/linting-trap#class-methods-use-this
+    'class-methods-use-this': 'off',
+    // https://erkinekici.com/articles/linting-trap#importprefer-default-export
+    'import/prefer-default-export': 'off',
+    // https://erkinekici.com/articles/linting-trap#disallowing-for-of
+    // Original: https://github.com/airbnb/javascript/blob/d8cb404da74c302506f91e5928f30cc75109e74d/packages/eslint-config-airbnb-base/rules/style.js#L333-L351
+    'no-restricted-syntax': [
+      baseStyleRules['no-restricted-syntax'][0],
+      ...baseStyleRules['no-restricted-syntax'].slice(1).filter((rule) => rule.selector !== 'ForOfStatement'),
+    ],
+  };
+}

.gitattributes

@@ -0,0 +1,6 @@
+# Prevent Git from auto-converting to CRLF on Windows, and convert to LF on checkin.
+#   *           : All files
+#   text=auto   : If Git decides content it text, it converts CRLF to LF on checkin.
+#   eol=lf      : forces Git to normalize line endings to LF on checkin and prevents conversion
+#                 to CRLF when the file is checked out.
+* text=auto eol=lf

.github/workflows/checks.build.yaml

@@ -0,0 +1,59 @@
+name: build-checks
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build-web:
+    strategy:
+      matrix:
+        os: [ macos, ubuntu, windows ]
+        mode: [ development, test, production ]
+      fail-fast: false # Allows to see results from other combinations
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Setup node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 15.x
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Build
+        run: npm run build -- --mode ${{ matrix.mode }}
+
+  # A new job is used due to environments/modes different from Vue CLI, https://github.com/nklayman/vue-cli-plugin-electron-builder/issues/1626
+  build-desktop:
+    strategy:
+      matrix:
+        os: [ macos, ubuntu, windows ]
+        mode: [ development, production ] # "test" is not supported https://github.com/nklayman/vue-cli-plugin-electron-builder/issues/1627
+      fail-fast: false # Allows to see results from other combinations
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Setup node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 15.x
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Install cross-env
+        # Used to set NODE_ENV due to https://github.com/nklayman/vue-cli-plugin-electron-builder/issues/1626
+        run: npm install --global cross-env
+      -
+        name: Build
+        run: |-  
+          cross-env-shell NODE_ENV=${{ matrix.mode }}
+          npm run electron:build -- --publish never --mode ${{ matrix.mode }}

.github/workflows/checks.quality.yaml

@@ -1,4 +1,4 @@
-name: Quality checks
+name: quality-checks
 
 on: [ push, pull_request ]
 
@@ -8,12 +8,13 @@ jobs:
     strategy:
       matrix:
         lint-command:
-          - npm run lint:vue
+          - npm run lint:eslint
           - npm run lint:yaml
           - npm run lint:md
           - npm run lint:md:relative-urls
           - npm run lint:md:consistency
-      fail-fast: false # So it continues with other commands if one fails
+        os: [ macos, ubuntu, windows ]
+      fail-fast: false # Still interested to see results from other combinations
     steps:
       - name: Checkout
         uses: actions/checkout@v2

.github/workflows/checks.security.yaml

@@ -1,4 +1,4 @@
-name: Security checks
+name: security-checks
 
 on:
   push:

.github/workflows/release.desktop.yaml

@@ -1,4 +1,4 @@
-name: Deploy desktop
+name: release-desktop
 
 on:
  release:

.github/workflows/release.git.yaml

@@ -1,4 +1,4 @@
-name: Bump & release
+name: release-git
 
 on:
   push: # Ensure a new release is created for each new tag

.github/workflows/release.site.yaml

@@ -1,4 +1,4 @@
-name: Deploy site
+name: release-site
 
 on:
  release:

.github/workflows/tests.e2e.yaml

@@ -0,0 +1,28 @@
+name: e2e-tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  run-tests:
+    strategy:
+      matrix:
+        os: [macos, ubuntu, windows]
+      fail-fast: false # So it still runs on other OSes if one of them fails
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Setup node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 15.x
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Run e2e tests
+        run: npm run test:e2e -- --headless

.github/workflows/tests.integration.yaml

@@ -1,9 +1,9 @@
-name: Test
+name: integration-tests
 
 on:
   push:
   pull_request:
-  schedule: # for integration tests
+  schedule: # To get notified about problems from third party dependencies
     - cron: '0 0 * * 0' # at 00:00 on every Sunday
 
 jobs:
@@ -25,9 +25,6 @@ jobs:
       -
         name: Install dependencies
         run: npm ci
-      -
-        name: Run unit tests
-        run: npm run test:unit
       -
         name: Run integration tests
         run: npm run test:integration

.github/workflows/tests.unit.yaml

@@ -0,0 +1,28 @@
+name: unit-tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  run-tests:
+    strategy:
+      matrix:
+        os: [macos, ubuntu, windows]
+      fail-fast: false # So it still runs on other OSes if one of them fails
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Setup node
+        uses: actions/setup-node@v1
+        with:
+          node-version: 15.x
+      -
+        name: Install dependencies
+        run: npm ci
+      -
+        name: Run unit tests
+        run: npm run test:unit

.gitignore

@@ -3,4 +3,7 @@ dist/
 .vs
 .vscode
 #Electron-builder output
-/dist_electron
+/dist_electron
+# Cypress
+/tests/e2e/screenshots
+/tests/e2e/videos

CHANGELOG.md

@@ -1,5 +1,31 @@
 # Changelog
 
+## 0.11.2 (2021-12-03)
+
+* Fix Windows TrustedInstaller session errors | [20a0071](https://github.com/undergroundwires/privacy.sexy/commit/20a0071c0d3d769a8f31218abdbfc4cafa25c6ff)
+* Improve tests for `UserSelection` | [2f90cac](https://github.com/undergroundwires/privacy.sexy/commit/2f90cac52ab9e57615aeec41f9daa842bce770a5)
+* Fix disabling/enabling Defender on Windows #104 | [2e08293](https://github.com/undergroundwires/privacy.sexy/commit/2e082932c952b0849ab2b8709ff0c75293b88e95)
+* Refactor Saas naming, structure and modules | [bf83c58](https://github.com/undergroundwires/privacy.sexy/commit/bf83c58982ffa178facc6d35e50c7f1eac7ff236)
+* Fix Defender features errors in Windows #104 | [d7761ab](https://github.com/undergroundwires/privacy.sexy/commit/d7761ab30e7f1e10a2919c196804d67511d6163a)
+* Fix unintendedly inlined Windows scripts | [f2d9881](https://github.com/undergroundwires/privacy.sexy/commit/f2d988138257ff184884e4adc83c39e3bc247e9b)
+* Fix Defender error due to non-english Windows #104 | [7c02ffb](https://github.com/undergroundwires/privacy.sexy/commit/7c02ffb6c95382b94f0b05e6f259cc418ec91c93)
+* Improve and unify disabling of Windows services | [70cdf38](https://github.com/undergroundwires/privacy.sexy/commit/70cdf3865a0de3214fc9e26fbdada4b0cb413c46)
+* Improve Windows defender docs and errors #104 | [d2518b1](https://github.com/undergroundwires/privacy.sexy/commit/d2518b11a7774ec58b9b46a691e2f013855bf0f9)
+* Unrecommend and complete Windows Push Notif. #101 | [c65209e](https://github.com/undergroundwires/privacy.sexy/commit/c65209e6a99230f15ace8955e8d5a6f3333d146b)
+
+[compare](https://github.com/undergroundwires/privacy.sexy/compare/0.11.1...0.11.2)
+
+## 0.11.1 (2021-11-04)
+
+* Update dependencies | [64631a4](https://github.com/undergroundwires/privacy.sexy/commit/64631a4552fad7f7b06286aba8d3ca2d731f9342)
+* Fix, document, unrecommend Windows browser cleanup | [5ead1a0](https://github.com/undergroundwires/privacy.sexy/commit/5ead1a087d91948890bc4ae6fea176123f18c285)
+* Fix failing URL status checking integration tests | [799fb09](https://github.com/undergroundwires/privacy.sexy/commit/799fb091b8eb06c70ac0c67f2ef5385dce73501f)
+* Refactor to remove "Async" function name suffix | [82c43ba](https://github.com/undergroundwires/privacy.sexy/commit/82c43ba2e37fb6e7f62ccd9bec8c5f48575f0613)
+* Fix dead URLs and use forks as GitHub references | [97ddc02](https://github.com/undergroundwires/privacy.sexy/commit/97ddc027cb5395a74991cabc1d8c875ee945636d)
+* Fix website not loading on Safari | [0db8cc4](https://github.com/undergroundwires/privacy.sexy/commit/0db8cc420655e01cbbed57c4658489b761a15899)
+
+[compare](https://github.com/undergroundwires/privacy.sexy/compare/0.11.0...0.11.1)
+
 ## 0.11.0 (2021-10-21)
 
 * Change "grouping" to "view" | [c0c475f](https://github.com/undergroundwires/privacy.sexy/commit/c0c475ff564b23a4dabcc03ac2909207a8eb61ce)

README.md

@@ -2,21 +2,104 @@
 
 > Enforce privacy & security best-practices on Windows and macOS, because privacy is sexy 🍑🍆
 
-[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](./CONTRIBUTING.md)
-[![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/undergroundwires/privacy.sexy.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/undergroundwires/privacy.sexy/context:javascript)
-[![Maintainability](https://api.codeclimate.com/v1/badges/3a70b7ef602e2264342c/maintainability)](https://codeclimate.com/github/undergroundwires/privacy.sexy/maintainability)
-[![Tests status](https://github.com/undergroundwires/privacy.sexy/workflows/Test/badge.svg)](https://github.com/undergroundwires/privacy.sexy/actions)
-[![Quality checks status](https://github.com/undergroundwires/privacy.sexy/workflows/Quality%20checks/badge.svg)](https://github.com/undergroundwires/privacy.sexy/actions)
-[![Security checks status](https://github.com/undergroundwires/privacy.sexy/workflows/Security%20checks/badge.svg)](https://github.com/undergroundwires/privacy.sexy/actions)
-[![Bump & release status](https://github.com/undergroundwires/privacy.sexy/workflows/Bump%20&%20release/badge.svg)](https://github.com/undergroundwires/privacy.sexy/actions)
-[![Deploy status](https://github.com/undergroundwires/privacy.sexy/workflows/Build%20&%20deploy/badge.svg)](https://github.com/undergroundwires/privacy.sexy/actions)
-[![Auto-versioned by bump-everywhere](https://github.com/undergroundwires/bump-everywhere/blob/master/badge.svg?raw=true)](https://github.com/undergroundwires/bump-everywhere)
+<!-- markdownlint-disable MD033 -->
+<p align="center">
+  <a href="https://github.com/undergroundwires/privacy.sexy/blob/master/CONTRIBUTING.md">
+    <img
+      alt="contributions are welcome"
+      src="https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat"
+    />
+  </a>
+  <!-- Code quality -->
+  <br />
+  <a href="https://lgtm.com/projects/g/undergroundwires/privacy.sexy/context:javascript">
+    <img
+      alt="Language grade: JavaScript/TypeScript"
+      src="https://img.shields.io/lgtm/grade/javascript/g/undergroundwires/privacy.sexy.svg?logo=lgtm&logoWidth=18"
+    />
+  </a>
+  <a href="https://codeclimate.com/github/undergroundwires/privacy.sexy/maintainability">
+    <img
+      alt="Maintainability"
+      src="https://api.codeclimate.com/v1/badges/3a70b7ef602e2264342c/maintainability"
+    />
+  </a>
+  <!-- Tests -->
+  <br />
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/tests.unit.yaml">
+    <img
+      alt="Unit tests status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/unit-tests/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/tests.integration.yaml">
+    <img
+      alt="Integration tests status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/integration-tests/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/tests.e2e.yaml">
+    <img
+      alt="E2E tests status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/e2e-tests/badge.svg"
+    />
+  </a>
+  <!-- Checks -->
+  <br />
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/checks.quality.yaml">
+    <img
+      alt="Quality checks status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/quality-checks/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/checks.security.yaml">
+    <img
+      alt="Security checks status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/security-checks/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/checks.build.yaml">
+    <img
+      alt="Build checks status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/build-checks/badge.svg"
+    />
+  </a>
+  <!-- Release -->
+  <br />
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/release.git.yaml">
+    <img
+      alt="Git release status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/release-git/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/release.site.yaml">
+    <img
+      alt="Site release status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/release-site/badge.svg"
+    />
+  </a>
+  <a href="https://github.com/undergroundwires/privacy.sexy/actions/workflows/release.desktop.yaml">
+    <img
+      alt="Desktop application release status"
+      src="https://github.com/undergroundwires/privacy.sexy/workflows/release-desktop/badge.svg"
+    />
+  </a>
+  <!-- Others -->
+  <br />
+  <a href="https://github.com/undergroundwires/bump-everywhere">
+    <img
+      alt="Auto-versioned by bump-everywhere"
+      src="https://github.com/undergroundwires/bump-everywhere/blob/master/badge.svg?raw=true"
+    />
+  </a>
+</p>
+<!-- markdownlint-restore -->
 
 ## Get started
 
 - Online version at [https://privacy.sexy](https://privacy.sexy)
   - 💡 No need to run any compiled software on your computer.
-- Alternatively download offline version for [Windows](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.0/privacy.sexy-Setup-0.11.0.exe), [macOS](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.0/privacy.sexy-0.11.0.dmg) or [Linux](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.0/privacy.sexy-0.11.0.AppImage).
+- Alternatively download offline version for [Windows](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.2/privacy.sexy-Setup-0.11.2.exe), [macOS](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.2/privacy.sexy-0.11.2.dmg) or [Linux](https://github.com/undergroundwires/privacy.sexy/releases/download/0.11.2/privacy.sexy-0.11.2.AppImage).
   - 💡 Single click to execute your script.
 - ❗ Come back regularly to apply latest version for stronger privacy and security.
 
@@ -49,6 +132,9 @@
 - Testing
   - Run unit tests: `npm run test:unit`
   - Run integration tests: `npm run test:integration`
+  - Run e2e (end-to-end) tests
+    - Interactive mode with GUI: `npm run test:e2e`
+    - Headless mode without GUI: `npm run test:e2e -- --headless`
   - Lint: `npm run lint`
 - **Desktop app**
   - Development: `npm run electron:serve`
@@ -57,8 +143,8 @@
   - Development: `npm run serve` to compile & hot-reload for development.
   - Production: `npm run build` to prepare files for distribution.
   - Or run using Docker:
-    1. Build: `docker build -t undergroundwires/privacy.sexy:0.11.0 .`
-    2. Run: `docker run -it -p 8080:80 --rm --name privacy.sexy-0.11.0 undergroundwires/privacy.sexy:0.11.0`
+    1. Build: `docker build -t undergroundwires/privacy.sexy:0.11.2 .`
+    2. Run: `docker run -it -p 8080:80 --rm --name privacy.sexy-0.11.2 undergroundwires/privacy.sexy:0.11.2`
 
 ## Architecture overview
 
@@ -84,5 +170,6 @@
 - CI/CD is fully automated for this repo using different GIT events & GitHub actions.
   - Versioning, tagging, creation of `CHANGELOG.md` and releasing is automated using [bump-everywhere](https://github.com/undergroundwires/bump-everywhere) action
 - Everything that's merged in the master goes directly to production.
+- 📖 Read more on [CI/CD pipelines](./docs/ci-cd.md)
 
 [![CI/CD to AWS with GitHub Actions](img/architecture/gitops.png)](.github/workflows/)

babel.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   presets: [
-    '@vue/cli-plugin-babel/preset'
-  ]
-}
+    '@vue/cli-plugin-babel/preset',
+  ],
+};

cypress.json

@@ -0,0 +1,3 @@
+{
+  "pluginsFile": "tests/e2e/plugins/index.js"
+}

docs/ci-cd.md

@@ -0,0 +1,19 @@
+# Pipelines
+
+Pipelines are found under [`.github/workflows`](./../.github/workflows).
+
+## Pipeline types
+
+They are categorized based on their type:
+
+- `tests`: Different types of tests to verify functionality.
+- `checks`: Other controls such as vulnerability scans or styling checks.
+- `release`: Pipelines used for release of deployment such as building and testing.
+
+## Naming conventions
+
+Pipeline files are named using: **`<type>.<name>.yaml`**.
+
+**`type`**: Sub-folders do not work for GitHub workflows so that's why `<type>.` prefix is used. See also [pipeline types](#pipeline-types).
+
+**`name`**: Pipeline themselves are named using kebab case. It allows for easier URL references for their status badges. E.g. file name `tests.unit.yaml`, pipeline name: `name: unit-tests`

docs/presentation.md

@@ -10,11 +10,16 @@
   - [**`bootstrapping/`**](./../src/presentation/bootstrapping/): Registers Vue global objects including components and plugins.
   - [**`components/`**](./../src/presentation/components/): Contains all Vue components and their helper classes.
     - [**`Shared/`**](./../src/presentation/components/Shared): Contains Vue components and component helpers that are shared across other components.
-  - [**`styles/`**](./../src/presentation/styles/): Contains shared styles used throughout different components.
+  - [**`assets/`**](./../src/presentation/assets/styles/): Contains assets that will be processed by webpack.
+    - [**`fonts/`**](./../src/presentation/assets/fonts/): Contains fonts
+    - [**`styles/`**](./../src/presentation/assets/styles/): Contains shared styles used throughout different components.
+      - [**`components/`**](./../src/presentation/assets/styles/components): Contains styles that are reusable and tightly coupled a Vue/HTML component.
+      - [**`vendors-extensions/`**](./../src/presentation/assets/styles/third-party-extensions): Contains styles that override third-party components used.
+      - [**`main.scss`**](./../src/presentation/assets/styles/main.scss): Primary Sass file, passes along all other styles, should be the only file used from other components.
   - [**`main.ts`**](./../src/presentation/main.ts): Application entry point that mounts and starts Vue application.
-  - [`electron/`](./../src/presentation/electron/): Electron configuration for the desktop application.
+  - [**`electron/`**](./../src/presentation/electron/): Electron configuration for the desktop application.
     - [**`main.ts`**](./../src/presentation/main.ts): Main process of Electron, started as first thing when app starts.
-- [**`/public/`**](./../public/): Contains static assets that will simply be copied and not go through webpack.
+- [**`/public/`**](./../public/): Contains static assets that will directly be copied and not go through webpack.
 - [**`/vue.config.js`**](./../vue.config.js): Global Vue CLI configurations loaded by `@vue/cli-service`
 - [**`/postcss.config.js`**](./../postcss.config.js): PostCSS configurations that are used by Vue CLI internally
 - [**`/babel.config.js`**](./../babel.config.js): Babel configurations for polyfills used by `@vue/cli-plugin-babel`
@@ -50,3 +55,18 @@
     </Dialog>
     <div @click="$refs.testDialog.show()">Show dialog</div>
   ```
+
+## Sass naming convention
+
+- Use lowercase for variables/functions/mixins e.g.
+  - Variable: `$variable: value;`
+  - Function: `@function function() {}`
+  - Mixin: `@mixin mixin() {}`
+- Use - for a phrase/compound word e.g.
+  - Variable: `$some-variable: value;`
+  - Function: `@function some-function() {}`
+  - Mixin: `@mixin some-mixin() {}`
+- Grouping and name variables from generic to specific e.g.
+  - ✅ `$border-blue`, `$border-blue-light`, `$border-blue-lightest`, `$border-red`
+  - ❌ `$blue-border`, `$light-blue-border`, `$lightest-blue-border`, `$red-border`
+  

docs/tests.md

@@ -3,41 +3,59 @@
 - There are two different types of tests executed:
   1. [Unit tests](#unit-tests)
   2. [Integration tests](#integration-tests)
+  3. [End-to-end (E2E) tests](#e2e-tests)
+- All tests
+  - Uses [Mocha](https://mochajs.org/) and [Chai](https://www.chaijs.com/).
+  - Are written in files that includes `.spec` extension.
 - 💡 You can use path/module alias `@/tests` in import statements.
 
 ## Unit tests
 
-- Tests each component in isolation
-- Defined in [`./tests/unit`](./../tests/unit)
-- They follow same folder structure as [`./src`](./../src)
+- Tests each component in isolation.
+- Defined in [`./tests/unit`](./../tests/unit).
+- They follow same folder structure as [`./src`](./../src).
 
 ### Naming
 
-- Each test suite first describe the system under test
-  - E.g. tests for class `Application` is categorized under `Application`
-- Tests for specific methods are categorized under method name (if applicable)
-  - E.g. test for `run()` is categorized under `run`
+- Each test suite first describe the system under test.
+  - E.g. tests for class `Application` is categorized under `Application`.
+- Tests for specific methods are categorized under method name (if applicable).
+  - E.g. test for `run()` is categorized under `run`.
 
 ### Act, arrange, assert
 
-- Tests use act, arrange and assert (AAA) pattern when applicable
+- Tests use act, arrange and assert (AAA) pattern when applicable.
 - **Arrange**
-  - Should set up the test case
-  - Starts with comment line `// arrange`
+  - Should set up the test case.
+  - Starts with comment line `// arrange`.
 - **Act**
-  - Should cover the main thing to be tested
-  - Starts with comment line `// act`
+  - Should cover the main thing to be tested.
+  - Starts with comment line `// act`.
 - **Assert**
-  - Should elicit some sort of response
-  - Starts with comment line `// assert`
+  - Should elicit some sort of response.
+  - Starts with comment line `// assert`.
 
 ### Stubs
 
-- Stubs are defined in [`./tests/stubs`](./../tests/unit/stubs)
-- They implement dummy behavior to be functional
+- Stubs are defined in [`./tests/stubs`](./../tests/unit/stubs).
+- They implement dummy behavior to be functional.
 
 ## Integration tests
 
-- Tests functionality of a component in combination with others (not isolated)
-- Ensure dependencies to third parties work as expected
-- Defined in [`./tests/integration`](./../tests/integration)
+- Tests functionality of a component in combination with others (not isolated).
+- Ensure dependencies to third parties work as expected.
+- Defined in [`./tests/integration`](./../tests/integration).
+
+## E2E tests
+
+- Test the functionality and performance of a running application.
+- E2E tests are configured by vue plugin [`e2e-cypress`](https://github.com/vuejs/vue-cli/tree/dev/packages/@vue/cli-plugin-e2e-cypress#readme) for Vue CLI.
+- Names and folders are structured logically based on tests.
+- The structure is following:
+  - [`cypress.json`](./../cypress.json): Cypress configuration file.
+  - [`./tests/e2e/`](./../tests/e2e/): Base Cypress folder.
+    - [`/specs/`](./../tests/e2e/specs/): Test files, test are named with `.spec.js` extension.
+    - [`/plugins/index.js`](./../tests/e2e/plugins/index.js): Plugin file executed before project is loaded.
+    - [`/support/index.js`](./../tests/e2e/support/index.js): Support file, runs before every single spec file.
+    - *(Ignored)* `/videos`: Asset folder for videos taken during tests.
+    - *(Ignored)* `/screenshots`: Asset folder for Screenshots taken during tests.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "privacy.sexy",
-  "version": "0.11.0",
+  "version": "0.11.2",
   "private": true,
   "description": "Enforce privacy & security best-practices on Windows and macOS, because privacy is sexy 🍑🍆",
   "author": "undergroundwires",
@@ -8,17 +8,18 @@
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
     "test:unit": "vue-cli-service test:unit",
-    "test:integration": "vue-cli-service test:unit \"tests/integration/**/*.spec.ts\"",
-    "lint": "npm run lint:vue && npm run lint:yaml && npm run lint:md && npm run lint:md:relative-urls && npm run lint:md:consistency",
+    "test:e2e": "vue-cli-service test:e2e",
+    "lint": "npm run lint:md && npm run lint:md:consistency && npm run lint:md:relative-urls && npm run lint:eslint && npm run lint:yaml",
     "electron:build": "vue-cli-service electron:build",
     "electron:serve": "vue-cli-service electron:serve",
     "lint:md": "markdownlint **/*.md --ignore node_modules",
     "lint:md:consistency": "remark . --frail --use remark-preset-lint-consistent",
     "lint:md:relative-urls": "remark . --frail --use remark-validate-links",
-    "lint:vue": "vue-cli-service lint --no-fix",
+    "lint:eslint": "vue-cli-service lint --no-fix --mode production",
     "lint:yaml": "yamllint **/*.yaml --ignore=node_modules/**/*.yaml",
     "postinstall": "electron-builder install-app-deps",
-    "postuninstall": "electron-builder install-app-deps"
+    "postuninstall": "electron-builder install-app-deps",
+    "test:integration": "vue-cli-service test:unit \"tests/integration/**/*.spec.ts\""
   },
   "main": "background.js",
   "dependencies": {
@@ -47,30 +48,46 @@
     "@types/chai": "^4.2.22",
     "@types/file-saver": "^2.0.3",
     "@types/mocha": "^9.0.0",
-    "@vue/cli-plugin-babel": "^4.5.14",
-    "@vue/cli-plugin-typescript": "^4.5.14",
-    "@vue/cli-plugin-unit-mocha": "^4.5.14",
-    "@vue/cli-service": "^4.5.14",
+    "@typescript-eslint/eslint-plugin": "^5.4.0",
+    "@typescript-eslint/parser": "^5.4.0",
+    "@vue/cli-plugin-babel": "~5.0.0-rc.1",
+    "@vue/cli-plugin-e2e-cypress": "~5.0.0-rc.1",
+    "@vue/cli-plugin-eslint": "~5.0.0-rc.1",
+    "@vue/cli-plugin-typescript": "~5.0.0-rc.1",
+    "@vue/cli-plugin-unit-mocha": "~5.0.0-rc.1",
+    "@vue/cli-service": "~5.0.0-rc.1",
+    "@vue/eslint-config-airbnb": "^6.0.0",
+    "@vue/eslint-config-typescript": "^9.1.0",
     "@vue/test-utils": "1.2.2",
     "chai": "^4.3.4",
+    "cypress": "^8.3.0",
     "electron": "^15.3.0",
     "electron-devtools-installer": "^3.2.0",
     "electron-log": "^4.4.1",
     "electron-updater": "^4.3.9",
+    "eslint": "^7.32.0",
+    "eslint-plugin-import": "^2.25.3",
+    "eslint-plugin-vue": "^8.0.3",
+    "eslint-plugin-vuejs-accessibility": "^1.1.0",
     "js-yaml-loader": "^1.2.2",
     "markdownlint-cli": "^0.29.0",
+    "raw-loader": "^4.0.2",
     "remark-cli": "^10.0.0",
     "remark-lint-no-dead-urls": "^1.1.0",
     "remark-preset-lint-consistent": "^5.1.0",
     "remark-validate-links": "^11.0.1",
     "sass": "^1.43.3",
     "sass-loader": "10.2.0",
+    "ts-loader": "9.0.1",
     "tslib": "^2.3.1",
     "typescript": "^4.4.4",
     "vue-cli-plugin-electron-builder": "^2.1.1",
     "vue-template-compiler": "^2.6.14",
     "yaml-lint": "^1.2.4"
   },
+  "//devDependencies": {
+    "ts-loader": "Here as workaround for vue-cli-plugin-electron-builder using older webpack 4"
+  },
   "homepage": "https://privacy.sexy",
   "repository": {
     "type": "git",

postcss.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   plugins: {
-    autoprefixer: {}
-  }
-}
+    autoprefixer: {},
+  },
+};

src/application/ApplicationFactory.ts

@@ -7,15 +7,18 @@ export type ApplicationGetter = () => IApplication;
 const ApplicationGetter: ApplicationGetter = parseApplication;
 
 export class ApplicationFactory implements IApplicationFactory {
-    public static readonly Current: IApplicationFactory = new ApplicationFactory(ApplicationGetter);
-    private readonly getter: AsyncLazy<IApplication>;
-    protected constructor(costlyGetter: ApplicationGetter) {
-        if (!costlyGetter) {
-            throw new Error('undefined getter');
-        }
-        this.getter = new AsyncLazy<IApplication>(() => Promise.resolve(costlyGetter()));
-    }
-    public getApp(): Promise<IApplication> {
-        return this.getter.getValue();
+  public static readonly Current: IApplicationFactory = new ApplicationFactory(ApplicationGetter);
+
+  private readonly getter: AsyncLazy<IApplication>;
+
+  protected constructor(costlyGetter: ApplicationGetter) {
+    if (!costlyGetter) {
+      throw new Error('undefined getter');
     }
+    this.getter = new AsyncLazy<IApplication>(() => Promise.resolve(costlyGetter()));
+  }
+
+  public getApp(): Promise<IApplication> {
+    return this.getter.getValue();
+  }
 }

src/application/Common/Array.ts

@@ -1,21 +1,21 @@
 // Compares to Array<T> objects for equality, ignoring order
 export function scrambledEqual<T>(array1: readonly T[], array2: readonly T[]) {
-    if (!array1) { throw new Error('undefined first array'); }
-    if (!array2) { throw new Error('undefined second array'); }
-    const sortedArray1 = sort(array1);
-    const sortedArray2 = sort(array2);
-    return sequenceEqual(sortedArray1, sortedArray2);
-    function sort(array: readonly T[]) {
-        return array.slice().sort();
-    }
+  if (!array1) { throw new Error('undefined first array'); }
+  if (!array2) { throw new Error('undefined second array'); }
+  const sortedArray1 = sort(array1);
+  const sortedArray2 = sort(array2);
+  return sequenceEqual(sortedArray1, sortedArray2);
+  function sort(array: readonly T[]) {
+    return array.slice().sort();
+  }
 }
 
 // Compares to Array<T> objects for equality in same order
 export function sequenceEqual<T>(array1: readonly T[], array2: readonly T[]) {
-    if (!array1) { throw new Error('undefined first array'); }
-    if (!array2) { throw new Error('undefined second array'); }
-    if (array1.length !== array2.length) {
-        return false;
-    }
-    return array1.every((val, index) => val === array2[index]);
+  if (!array1) { throw new Error('undefined first array'); }
+  if (!array2) { throw new Error('undefined second array'); }
+  if (array1.length !== array2.length) {
+    return false;
+  }
+  return array1.every((val, index) => val === array2[index]);
 }

src/application/Common/Enum.ts

@@ -1,54 +1,63 @@
 // Because we cannot do "T extends enum" 😞 https://github.com/microsoft/TypeScript/issues/30611
 export type EnumType = number | string;
-export type EnumVariable<T extends EnumType, TEnumValue extends EnumType> = { [key in T]: TEnumValue };
+export type EnumVariable<T extends EnumType, TEnumValue extends EnumType>
+  = { [key in T]: TEnumValue };
 
 export interface IEnumParser<TEnum> {
-    parseEnum(value: string, propertyName: string): TEnum;
-}
-export function createEnumParser<T extends EnumType, TEnumValue extends EnumType>(
-    enumVariable: EnumVariable<T, TEnumValue>): IEnumParser<TEnumValue> {
-    return {
-        parseEnum: (value, propertyName) => parseEnumValue(value, propertyName, enumVariable),
-    };
-}
-function parseEnumValue<T extends EnumType, TEnumValue extends EnumType>(
-    value: string,
-    enumName: string,
-    enumVariable: EnumVariable<T, TEnumValue>): TEnumValue {
-    if (!value) {
-        throw new Error(`undefined ${enumName}`);
-    }
-    if (typeof value !== 'string') {
-        throw new Error(`unexpected type of ${enumName}: "${typeof value}"`);
-    }
-    const casedValue = getEnumNames(enumVariable)
-        .find((enumValue) => enumValue.toLowerCase() === value.toLowerCase());
-    if (!casedValue) {
-        throw new Error(`unknown ${enumName}: "${value}"`);
-    }
-    return enumVariable[casedValue as keyof typeof enumVariable];
+  parseEnum(value: string, propertyName: string): TEnum;
 }
 
-export function getEnumNames<T extends EnumType, TEnumValue extends EnumType>(
-    enumVariable: EnumVariable<T, TEnumValue>): string[] {
-    return Object
-        .values(enumVariable)
-        .filter((enumMember) => typeof enumMember === 'string') as string[];
+export function createEnumParser<T extends EnumType, TEnumValue extends EnumType>(
+  enumVariable: EnumVariable<T, TEnumValue>,
+): IEnumParser<TEnumValue> {
+  return {
+    parseEnum: (value, propertyName) => parseEnumValue(value, propertyName, enumVariable),
+  };
+}
+
+function parseEnumValue<T extends EnumType, TEnumValue extends EnumType>(
+  value: string,
+  enumName: string,
+  enumVariable: EnumVariable<T, TEnumValue>,
+): TEnumValue {
+  if (!value) {
+    throw new Error(`undefined ${enumName}`);
+  }
+  if (typeof value !== 'string') {
+    throw new Error(`unexpected type of ${enumName}: "${typeof value}"`);
+  }
+  const casedValue = getEnumNames(enumVariable)
+    .find((enumValue) => enumValue.toLowerCase() === value.toLowerCase());
+  if (!casedValue) {
+    throw new Error(`unknown ${enumName}: "${value}"`);
+  }
+  return enumVariable[casedValue as keyof typeof enumVariable];
+}
+
+export function getEnumNames
+<T extends EnumType, TEnumValue extends EnumType>(
+  enumVariable: EnumVariable<T, TEnumValue>,
+): string[] {
+  return Object
+    .values(enumVariable)
+    .filter((enumMember) => typeof enumMember === 'string') as string[];
 }
 
 export function getEnumValues<T extends EnumType, TEnumValue extends EnumType>(
-    enumVariable: EnumVariable<T, TEnumValue>): TEnumValue[] {
-    return getEnumNames(enumVariable)
-        .map((level) => enumVariable[level]) as TEnumValue[];
+  enumVariable: EnumVariable<T, TEnumValue>,
+): TEnumValue[] {
+  return getEnumNames(enumVariable)
+    .map((level) => enumVariable[level]) as TEnumValue[];
 }
 
 export function assertInRange<T extends EnumType, TEnumValue extends EnumType>(
-    value: TEnumValue,
-    enumVariable: EnumVariable<T, TEnumValue>) {
-    if (value === undefined) {
-        throw new Error('undefined enum value');
-    }
-    if (!(value in enumVariable)) {
-        throw new RangeError(`enum value "${value}" is out of range`);
-    }
+  value: TEnumValue,
+  enumVariable: EnumVariable<T, TEnumValue>,
+) {
+  if (value === undefined) {
+    throw new Error('undefined enum value');
+  }
+  if (!(value in enumVariable)) {
+    throw new RangeError(`enum value "${value}" is out of range`);
+  }
 }

src/application/Common/ScriptingLanguage/IScriptingLanguageFactory.ts

@@ -1,5 +1,5 @@
 import { ScriptingLanguage } from '@/domain/ScriptingLanguage';
 
 export interface IScriptingLanguageFactory<T> {
-    create(language: ScriptingLanguage): T;
+  create(language: ScriptingLanguage): T;
 }

src/application/Common/ScriptingLanguage/ScriptingLanguageFactory.ts

@@ -1,31 +1,30 @@
 import { ScriptingLanguage } from '@/domain/ScriptingLanguage';
-import { IScriptingLanguageFactory } from './IScriptingLanguageFactory';
 import { assertInRange } from '@/application/Common/Enum';
+import { IScriptingLanguageFactory } from './IScriptingLanguageFactory';
 
 type Getter<T> = () => T;
 
 export abstract class ScriptingLanguageFactory<T> implements IScriptingLanguageFactory<T> {
-    private readonly getters = new Map<ScriptingLanguage, Getter<T>>();
+  private readonly getters = new Map<ScriptingLanguage, Getter<T>>();
 
-    public create(language: ScriptingLanguage): T {
-        assertInRange(language, ScriptingLanguage);
-        if (!this.getters.has(language)) {
-            throw new RangeError(`unknown language: "${ScriptingLanguage[language]}"`);
-        }
-        const getter = this.getters.get(language);
-        const instance = getter();
-        return instance;
+  public create(language: ScriptingLanguage): T {
+    assertInRange(language, ScriptingLanguage);
+    if (!this.getters.has(language)) {
+      throw new RangeError(`unknown language: "${ScriptingLanguage[language]}"`);
     }
+    const getter = this.getters.get(language);
+    const instance = getter();
+    return instance;
+  }
 
-    protected registerGetter(language: ScriptingLanguage, getter: Getter<T>) {
-        assertInRange(language, ScriptingLanguage);
-        if (!getter)  {
-            throw new Error('undefined getter');
-        }
-        if (this.getters.has(language)) {
-            throw new Error(`${ScriptingLanguage[language]} is already registered`);
-        }
-        this.getters.set(language, getter);
+  protected registerGetter(language: ScriptingLanguage, getter: Getter<T>) {
+    assertInRange(language, ScriptingLanguage);
+    if (!getter) {
+      throw new Error('undefined getter');
     }
-
+    if (this.getters.has(language)) {
+      throw new Error(`${ScriptingLanguage[language]} is already registered`);
+    }
+    this.getters.set(language, getter);
+  }
 }

src/application/Context/ApplicationContext.ts

@@ -1,60 +1,64 @@
-import { IApplicationContext, IApplicationContextChangedEvent } from './IApplicationContext';
-import { ICategoryCollectionState } from './State/ICategoryCollectionState';
-import { CategoryCollectionState } from './State/CategoryCollectionState';
 import { IApplication } from '@/domain/IApplication';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import { ICategoryCollection } from '@/domain/ICategoryCollection';
 import { EventSource } from '@/infrastructure/Events/EventSource';
 import { assertInRange } from '@/application/Common/Enum';
+import { CategoryCollectionState } from './State/CategoryCollectionState';
+import { ICategoryCollectionState } from './State/ICategoryCollectionState';
+import { IApplicationContext, IApplicationContextChangedEvent } from './IApplicationContext';
 
 type StateMachine = Map<OperatingSystem, ICategoryCollectionState>;
 
 export class ApplicationContext implements IApplicationContext {
-    public readonly contextChanged = new EventSource<IApplicationContextChangedEvent>();
-    public collection: ICategoryCollection;
-    public currentOs: OperatingSystem;
+  public readonly contextChanged = new EventSource<IApplicationContextChangedEvent>();
 
-    public get state(): ICategoryCollectionState {
-        return this.states[this.collection.os];
-    }
+  public collection: ICategoryCollection;
 
-    private readonly states: StateMachine;
-    public constructor(
-        public readonly app: IApplication,
-        initialContext: OperatingSystem) {
-        validateApp(app);
-        assertInRange(initialContext, OperatingSystem);
-        this.states = initializeStates(app);
-        this.changeContext(initialContext);
-    }
+  public currentOs: OperatingSystem;
 
-    public changeContext(os: OperatingSystem): void {
-        if (this.currentOs === os) {
-            return;
-        }
-        this.collection = this.app.getCollection(os);
-        if (!this.collection) {
-            throw new Error(`os "${OperatingSystem[os]}" is not defined in application`);
-        }
-        const event: IApplicationContextChangedEvent = {
-            newState: this.states[os],
-            oldState: this.states[this.currentOs],
-        };
-        this.contextChanged.notify(event);
-        this.currentOs = os;
+  public get state(): ICategoryCollectionState {
+    return this.states[this.collection.os];
+  }
+
+  private readonly states: StateMachine;
+
+  public constructor(
+    public readonly app: IApplication,
+    initialContext: OperatingSystem,
+  ) {
+    validateApp(app);
+    assertInRange(initialContext, OperatingSystem);
+    this.states = initializeStates(app);
+    this.changeContext(initialContext);
+  }
+
+  public changeContext(os: OperatingSystem): void {
+    if (this.currentOs === os) {
+      return;
     }
+    this.collection = this.app.getCollection(os);
+    if (!this.collection) {
+      throw new Error(`os "${OperatingSystem[os]}" is not defined in application`);
+    }
+    const event: IApplicationContextChangedEvent = {
+      newState: this.states[os],
+      oldState: this.states[this.currentOs],
+    };
+    this.contextChanged.notify(event);
+    this.currentOs = os;
+  }
 }
 
 function validateApp(app: IApplication) {
-    if (!app) {
-        throw new Error('undefined app');
-    }
+  if (!app) {
+    throw new Error('undefined app');
+  }
 }
 
 function initializeStates(app: IApplication): StateMachine {
-    const machine = new Map<OperatingSystem, ICategoryCollectionState>();
-    for (const collection of app.collections) {
-        machine[collection.os] = new CategoryCollectionState(collection);
-    }
-    return machine;
+  const machine = new Map<OperatingSystem, ICategoryCollectionState>();
+  for (const collection of app.collections) {
+    machine[collection.os] = new CategoryCollectionState(collection);
+  }
+  return machine;
 }

src/application/Context/ApplicationContextFactory.ts

@@ -1,31 +1,32 @@
-import { ApplicationContext } from './ApplicationContext';
 import { IApplicationContext } from '@/application/Context/IApplicationContext';
 import { OperatingSystem } from '@/domain/OperatingSystem';
-import { Environment } from '../Environment/Environment';
 import { IApplication } from '@/domain/IApplication';
+import { Environment } from '../Environment/Environment';
 import { IEnvironment } from '../Environment/IEnvironment';
 import { IApplicationFactory } from '../IApplicationFactory';
 import { ApplicationFactory } from '../ApplicationFactory';
+import { ApplicationContext } from './ApplicationContext';
 
 export async function buildContext(
-    factory: IApplicationFactory = ApplicationFactory.Current,
-    environment = Environment.CurrentEnvironment): Promise<IApplicationContext> {
-    if (!factory) { throw new Error('undefined factory'); }
-    if (!environment) { throw new Error('undefined environment'); }
-    const app = await factory.getApp();
-    const os = getInitialOs(app, environment);
-    return new ApplicationContext(app, os);
+  factory: IApplicationFactory = ApplicationFactory.Current,
+  environment = Environment.CurrentEnvironment,
+): Promise<IApplicationContext> {
+  if (!factory) { throw new Error('undefined factory'); }
+  if (!environment) { throw new Error('undefined environment'); }
+  const app = await factory.getApp();
+  const os = getInitialOs(app, environment);
+  return new ApplicationContext(app, os);
 }
 
 function getInitialOs(app: IApplication, environment: IEnvironment): OperatingSystem {
-    const currentOs = environment.os;
-    const supportedOsList = app.getSupportedOsList();
-    if (supportedOsList.includes(currentOs)) {
-        return currentOs;
-    }
-    supportedOsList.sort((os1, os2) => {
-        const getPriority = (os: OperatingSystem) => app.getCollection(os).totalScripts;
-        return getPriority(os2) - getPriority(os1);
-    });
-    return supportedOsList[0];
+  const currentOs = environment.os;
+  const supportedOsList = app.getSupportedOsList();
+  if (supportedOsList.includes(currentOs)) {
+    return currentOs;
+  }
+  supportedOsList.sort((os1, os2) => {
+    const getPriority = (os: OperatingSystem) => app.getCollection(os).totalScripts;
+    return getPriority(os2) - getPriority(os1);
+  });
+  return supportedOsList[0];
 }

src/application/Context/IApplicationContext.ts

@@ -1,16 +1,20 @@
-import { ICategoryCollectionState } from './State/ICategoryCollectionState';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import { IEventSource } from '@/infrastructure/Events/IEventSource';
 import { IApplication } from '@/domain/IApplication';
+import { ICategoryCollectionState, IReadOnlyCategoryCollectionState } from './State/ICategoryCollectionState';
 
-export interface IApplicationContext {
-    readonly app: IApplication;
+export interface IReadOnlyApplicationContext {
+  readonly app: IApplication;
+  readonly state: IReadOnlyCategoryCollectionState;
+  readonly contextChanged: IEventSource<IApplicationContextChangedEvent>;
+}
+
+export interface IApplicationContext extends IReadOnlyApplicationContext {
     readonly state: ICategoryCollectionState;
-    readonly contextChanged: IEventSource<IApplicationContextChangedEvent>;
     changeContext(os: OperatingSystem): void;
 }
 
 export interface IApplicationContextChangedEvent {
-    readonly newState: ICategoryCollectionState;
-    readonly oldState: ICategoryCollectionState;
+  readonly newState: ICategoryCollectionState;
+  readonly oldState: ICategoryCollectionState;
 }

src/application/Context/State/CategoryCollectionState.ts

@@ -1,3 +1,5 @@
+import { ICategoryCollection } from '@/domain/ICategoryCollection';
+import { OperatingSystem } from '@/domain/OperatingSystem';
 import { UserFilter } from './Filter/UserFilter';
 import { IUserFilter } from './Filter/IUserFilter';
 import { ApplicationCode } from './Code/ApplicationCode';
@@ -5,19 +7,20 @@ import { UserSelection } from './Selection/UserSelection';
 import { IUserSelection } from './Selection/IUserSelection';
 import { ICategoryCollectionState } from './ICategoryCollectionState';
 import { IApplicationCode } from './Code/IApplicationCode';
-import { ICategoryCollection } from '../../../domain/ICategoryCollection';
-import { OperatingSystem } from '@/domain/OperatingSystem';
 
 export class CategoryCollectionState implements ICategoryCollectionState {
-    public readonly os: OperatingSystem;
-    public readonly code: IApplicationCode;
-    public readonly selection: IUserSelection;
-    public readonly filter: IUserFilter;
+  public readonly os: OperatingSystem;
 
-    public constructor(readonly collection: ICategoryCollection) {
-        this.selection = new UserSelection(collection, []);
-        this.code = new ApplicationCode(this.selection, collection.scripting);
-        this.filter = new UserFilter(collection);
-        this.os = collection.os;
-    }
+  public readonly code: IApplicationCode;
+
+  public readonly selection: IUserSelection;
+
+  public readonly filter: IUserFilter;
+
+  public constructor(readonly collection: ICategoryCollection) {
+    this.selection = new UserSelection(collection, []);
+    this.code = new ApplicationCode(this.selection, collection.scripting);
+    this.filter = new UserFilter(collection);
+    this.os = collection.os;
+  }
 }

src/application/Context/State/Code/ApplicationCode.ts

@@ -1,39 +1,41 @@
+import { SelectedScript } from '@/application/Context/State/Selection/SelectedScript';
+import { IReadOnlyUserSelection } from '@/application/Context/State/Selection/IUserSelection';
+import { EventSource } from '@/infrastructure/Events/EventSource';
+import { IScriptingDefinition } from '@/domain/IScriptingDefinition';
 import { CodeChangedEvent } from './Event/CodeChangedEvent';
 import { CodePosition } from './Position/CodePosition';
 import { ICodeChangedEvent } from './Event/ICodeChangedEvent';
-import { SelectedScript } from '@/application/Context/State/Selection/SelectedScript';
-import { IUserSelection } from '@/application/Context/State/Selection/IUserSelection';
 import { UserScriptGenerator } from './Generation/UserScriptGenerator';
-import { EventSource } from '@/infrastructure/Events/EventSource';
 import { IApplicationCode } from './IApplicationCode';
 import { IUserScriptGenerator } from './Generation/IUserScriptGenerator';
-import { IScriptingDefinition } from '@/domain/IScriptingDefinition';
 
 export class ApplicationCode implements IApplicationCode {
-    public readonly changed = new EventSource<ICodeChangedEvent>();
-    public current: string;
+  public readonly changed = new EventSource<ICodeChangedEvent>();
 
-    private scriptPositions = new Map<SelectedScript, CodePosition>();
+  public current: string;
 
-    constructor(
-        userSelection: IUserSelection,
-        private readonly scriptingDefinition: IScriptingDefinition,
-        private readonly generator: IUserScriptGenerator = new UserScriptGenerator()) {
-        if (!userSelection) { throw new Error('userSelection is null or undefined'); }
-        if (!scriptingDefinition) { throw new Error('scriptingDefinition is null or undefined'); }
-        if (!generator) { throw new Error('generator is null or undefined'); }
-        this.setCode(userSelection.selectedScripts);
-        userSelection.changed.on((scripts) => {
-            this.setCode(scripts);
-        });
-    }
+  private scriptPositions = new Map<SelectedScript, CodePosition>();
 
-    private setCode(scripts: ReadonlyArray<SelectedScript>): void {
-        const oldScripts = Array.from(this.scriptPositions.keys());
-        const code = this.generator.buildCode(scripts, this.scriptingDefinition);
-        this.current = code.code;
-        this.scriptPositions = code.scriptPositions;
-        const event = new CodeChangedEvent(code.code, oldScripts, code.scriptPositions);
-        this.changed.notify(event);
-    }
+  constructor(
+    userSelection: IReadOnlyUserSelection,
+    private readonly scriptingDefinition: IScriptingDefinition,
+    private readonly generator: IUserScriptGenerator = new UserScriptGenerator(),
+  ) {
+    if (!userSelection) { throw new Error('userSelection is null or undefined'); }
+    if (!scriptingDefinition) { throw new Error('scriptingDefinition is null or undefined'); }
+    if (!generator) { throw new Error('generator is null or undefined'); }
+    this.setCode(userSelection.selectedScripts);
+    userSelection.changed.on((scripts) => {
+      this.setCode(scripts);
+    });
+  }
+
+  private setCode(scripts: ReadonlyArray<SelectedScript>): void {
+    const oldScripts = Array.from(this.scriptPositions.keys());
+    const code = this.generator.buildCode(scripts, this.scriptingDefinition);
+    this.current = code.code;
+    this.scriptPositions = code.scriptPositions;
+    const event = new CodeChangedEvent(code.code, oldScripts, code.scriptPositions);
+    this.changed.notify(event);
+  }
 }

src/application/Context/State/Code/Event/CodeChangedEvent.ts

@@ -1,64 +1,71 @@
-import { ICodeChangedEvent } from './ICodeChangedEvent';
-import { SelectedScript } from '../../Selection/SelectedScript';
 import { IScript } from '@/domain/IScript';
 import { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
+import { SelectedScript } from '../../Selection/SelectedScript';
+import { ICodeChangedEvent } from './ICodeChangedEvent';
 
 export class CodeChangedEvent implements ICodeChangedEvent {
-    public readonly code: string;
-    public readonly addedScripts: ReadonlyArray<IScript>;
-    public readonly removedScripts: ReadonlyArray<IScript>;
-    public readonly changedScripts: ReadonlyArray<IScript>;
+  public readonly code: string;
 
-    private readonly scripts: Map<IScript, ICodePosition>;
+  public readonly addedScripts: ReadonlyArray<IScript>;
 
-    constructor(
-        code: string,
-        oldScripts: ReadonlyArray<SelectedScript>,
-        scripts: Map<SelectedScript, ICodePosition>) {
-        ensureAllPositionsExist(code, Array.from(scripts.values()));
-        this.code = code;
-        const newScripts = Array.from(scripts.keys());
-        this.addedScripts = selectIfNotExists(newScripts, oldScripts);
-        this.removedScripts = selectIfNotExists(oldScripts, newScripts);
-        this.changedScripts = getChangedScripts(oldScripts, newScripts);
-        this.scripts = new Map<IScript, ICodePosition>();
-        scripts.forEach((position, selection) => {
-            this.scripts.set(selection.script, position);
-        });
-    }
+  public readonly removedScripts: ReadonlyArray<IScript>;
 
-    public isEmpty(): boolean {
-        return this.scripts.size === 0;
-    }
+  public readonly changedScripts: ReadonlyArray<IScript>;
 
-    public getScriptPositionInCode(script: IScript): ICodePosition {
-       return this.scripts.get(script);
-    }
+  private readonly scripts: Map<IScript, ICodePosition>;
+
+  constructor(
+    code: string,
+    oldScripts: ReadonlyArray<SelectedScript>,
+    scripts: Map<SelectedScript, ICodePosition>,
+  ) {
+    ensureAllPositionsExist(code, Array.from(scripts.values()));
+    this.code = code;
+    const newScripts = Array.from(scripts.keys());
+    this.addedScripts = selectIfNotExists(newScripts, oldScripts);
+    this.removedScripts = selectIfNotExists(oldScripts, newScripts);
+    this.changedScripts = getChangedScripts(oldScripts, newScripts);
+    this.scripts = new Map<IScript, ICodePosition>();
+    scripts.forEach((position, selection) => {
+      this.scripts.set(selection.script, position);
+    });
+  }
+
+  public isEmpty(): boolean {
+    return this.scripts.size === 0;
+  }
+
+  public getScriptPositionInCode(script: IScript): ICodePosition {
+    return this.scripts.get(script);
+  }
 }
 
 function ensureAllPositionsExist(script: string, positions: ReadonlyArray<ICodePosition>) {
-    const totalLines = script.split(/\r\n|\r|\n/).length;
-    for (const position of positions) {
-        if (position.endLine > totalLines) {
-            throw new Error(`script end line (${position.endLine}) is out of range.` +
-                            `(total code lines: ${totalLines}`);
-        }
-    }
+  const totalLines = script.split(/\r\n|\r|\n/).length;
+  const missingPositions = positions.filter((position) => position.endLine > totalLines);
+  if (missingPositions.length > 0) {
+    throw new Error(
+      `Out of range script end line: "${missingPositions.map((pos) => pos.endLine).join('", "')}"`
+        + `(total code lines: ${totalLines}).`,
+    );
+  }
 }
 
 function getChangedScripts(
-    oldScripts: ReadonlyArray<SelectedScript>,
-    newScripts: ReadonlyArray<SelectedScript>): ReadonlyArray<IScript> {
-    return newScripts
-        .filter((newScript) => oldScripts.find((oldScript) => oldScript.id === newScript.id
-                               && oldScript.revert !== newScript.revert ))
-        .map((selection) => selection.script);
+  oldScripts: ReadonlyArray<SelectedScript>,
+  newScripts: ReadonlyArray<SelectedScript>,
+): ReadonlyArray<IScript> {
+  return newScripts
+    .filter((newScript) => oldScripts.find((oldScript) => oldScript.id === newScript.id
+      && oldScript.revert !== newScript.revert))
+    .map((selection) => selection.script);
 }
 
 function selectIfNotExists(
-    selectableContainer: ReadonlyArray<SelectedScript>,
-    test: ReadonlyArray<SelectedScript>) {
-    return selectableContainer
-        .filter((script) => !test.find((oldScript) => oldScript.id === script.id))
-        .map((selection) => selection.script);
+  selectableContainer: ReadonlyArray<SelectedScript>,
+  test: ReadonlyArray<SelectedScript>,
+) {
+  return selectableContainer
+    .filter((script) => !test.find((oldScript) => oldScript.id === script.id))
+    .map((selection) => selection.script);
 }

src/application/Context/State/Code/Event/ICodeChangedEvent.ts

@@ -2,10 +2,10 @@ import { IScript } from '@/domain/IScript';
 import { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
 
 export interface ICodeChangedEvent {
-    readonly code: string;
-    addedScripts: ReadonlyArray<IScript>;
-    removedScripts: ReadonlyArray<IScript>;
-    changedScripts: ReadonlyArray<IScript>;
-    isEmpty(): boolean;
-    getScriptPositionInCode(script: IScript): ICodePosition;
+  readonly code: string;
+  addedScripts: ReadonlyArray<IScript>;
+  removedScripts: ReadonlyArray<IScript>;
+  changedScripts: ReadonlyArray<IScript>;
+  isEmpty(): boolean;
+  getScriptPositionInCode(script: IScript): ICodePosition;
 }

src/application/Context/State/Code/Generation/CodeBuilder.ts

@@ -4,64 +4,65 @@ const NewLine = '\n';
 const TotalFunctionSeparatorChars = 58;
 
 export abstract class CodeBuilder implements ICodeBuilder {
-    private readonly lines = new Array<string>();
+  private readonly lines = new Array<string>();
 
-    // Returns current line starting from 0 (no lines), or 1 (have single line)
-    public get currentLine(): number {
-        return this.lines.length;
+  // Returns current line starting from 0 (no lines), or 1 (have single line)
+  public get currentLine(): number {
+    return this.lines.length;
+  }
+
+  public appendLine(code?: string): CodeBuilder {
+    if (!code) {
+      this.lines.push('');
+      return this;
     }
+    const lines = code.match(/[^\r\n]+/g);
+    this.lines.push(...lines);
+    return this;
+  }
 
-    public appendLine(code?: string): CodeBuilder {
-        if (!code) {
-            this.lines.push('');
-            return this;
-        }
-        const lines = code.match(/[^\r\n]+/g);
-        for (const line of lines) {
-            this.lines.push(line);
-        }
-        return this;
+  public appendTrailingHyphensCommentLine(
+    totalRepeatHyphens: number = TotalFunctionSeparatorChars,
+  ): CodeBuilder {
+    return this.appendCommentLine('-'.repeat(totalRepeatHyphens));
+  }
+
+  public appendCommentLine(commentLine?: string): CodeBuilder {
+    this.lines.push(`${this.getCommentDelimiter()} ${commentLine}`);
+    return this;
+  }
+
+  public appendFunction(name: string, code: string): CodeBuilder {
+    if (!name) { throw new Error('name cannot be empty or null'); }
+    if (!code) { throw new Error('code cannot be empty or null'); }
+    return this
+      .appendCommentLineWithHyphensAround(name)
+      .appendLine(this.writeStandardOut(`--- ${name}`))
+      .appendLine(code)
+      .appendTrailingHyphensCommentLine();
+  }
+
+  public appendCommentLineWithHyphensAround(
+    sectionName: string,
+    totalRepeatHyphens: number = TotalFunctionSeparatorChars,
+  ): CodeBuilder {
+    if (!sectionName) { throw new Error('sectionName cannot be empty or null'); }
+    if (sectionName.length >= totalRepeatHyphens) {
+      return this.appendCommentLine(sectionName);
     }
+    const firstHyphens = '-'.repeat(Math.floor((totalRepeatHyphens - sectionName.length) / 2));
+    const secondHyphens = '-'.repeat(Math.ceil((totalRepeatHyphens - sectionName.length) / 2));
+    return this
+      .appendTrailingHyphensCommentLine()
+      .appendCommentLine(firstHyphens + sectionName + secondHyphens)
+      .appendTrailingHyphensCommentLine(TotalFunctionSeparatorChars);
+  }
 
-    public appendTrailingHyphensCommentLine(
-        totalRepeatHyphens: number = TotalFunctionSeparatorChars): CodeBuilder {
-        return this.appendCommentLine('-'.repeat(totalRepeatHyphens));
-    }
+  public toString(): string {
+    return this.lines.join(NewLine);
+  }
 
-    public appendCommentLine(commentLine?: string): CodeBuilder {
-        this.lines.push(`${this.getCommentDelimiter()} ${commentLine}`);
-        return this;
-    }
+  protected abstract getCommentDelimiter(): string;
 
-    public appendFunction(name: string, code: string): CodeBuilder {
-        if (!name)  { throw new Error('name cannot be empty or null'); }
-        if (!code)  { throw new Error('code cannot be empty or null'); }
-        return this
-            .appendCommentLineWithHyphensAround(name)
-            .appendLine(this.writeStandardOut(`--- ${name}`))
-            .appendLine(code)
-            .appendTrailingHyphensCommentLine();
-    }
-
-    public appendCommentLineWithHyphensAround(
-        sectionName: string,
-        totalRepeatHyphens: number = TotalFunctionSeparatorChars): CodeBuilder {
-        if (!sectionName)  { throw new Error('sectionName cannot be empty or null'); }
-        if (sectionName.length >= totalRepeatHyphens) {
-            return this.appendCommentLine(sectionName);
-        }
-        const firstHyphens = '-'.repeat(Math.floor((totalRepeatHyphens - sectionName.length) / 2));
-        const secondHyphens = '-'.repeat(Math.ceil((totalRepeatHyphens - sectionName.length) / 2));
-        return this
-            .appendTrailingHyphensCommentLine()
-            .appendCommentLine(firstHyphens + sectionName + secondHyphens)
-            .appendTrailingHyphensCommentLine(TotalFunctionSeparatorChars);
-    }
-
-    public toString(): string {
-        return this.lines.join(NewLine);
-    }
-
-    protected abstract getCommentDelimiter(): string;
-    protected abstract writeStandardOut(text: string): string;
+  protected abstract writeStandardOut(text: string): string;
 }

src/application/Context/State/Code/Generation/CodeBuilderFactory.ts

@@ -5,10 +5,12 @@ import { BatchBuilder } from './Languages/BatchBuilder';
 import { ShellBuilder } from './Languages/ShellBuilder';
 import { ICodeBuilderFactory } from './ICodeBuilderFactory';
 
-export class CodeBuilderFactory extends ScriptingLanguageFactory<ICodeBuilder> implements ICodeBuilderFactory {
-    constructor() {
-        super();
-        this.registerGetter(ScriptingLanguage.shellscript, () => new ShellBuilder());
-        this.registerGetter(ScriptingLanguage.batchfile, () => new BatchBuilder());
-    }
+export class CodeBuilderFactory
+  extends ScriptingLanguageFactory<ICodeBuilder>
+  implements ICodeBuilderFactory {
+  constructor() {
+    super();
+    this.registerGetter(ScriptingLanguage.shellscript, () => new ShellBuilder());
+    this.registerGetter(ScriptingLanguage.batchfile, () => new BatchBuilder());
+  }
 }

src/application/Context/State/Code/Generation/ICodeBuilder.ts

@@ -1,9 +1,9 @@
 export interface ICodeBuilder {
-    currentLine: number;
-    appendLine(code?: string): ICodeBuilder;
-    appendTrailingHyphensCommentLine(totalRepeatHyphens: number): ICodeBuilder;
-    appendCommentLine(commentLine?: string): ICodeBuilder;
-    appendCommentLineWithHyphensAround(sectionName: string, totalRepeatHyphens: number): ICodeBuilder;
-    appendFunction(name: string, code: string): ICodeBuilder;
-    toString(): string;
+  currentLine: number;
+  appendLine(code?: string): ICodeBuilder;
+  appendTrailingHyphensCommentLine(totalRepeatHyphens: number): ICodeBuilder;
+  appendCommentLine(commentLine?: string): ICodeBuilder;
+  appendCommentLineWithHyphensAround(sectionName: string, totalRepeatHyphens: number): ICodeBuilder;
+  appendFunction(name: string, code: string): ICodeBuilder;
+  toString(): string;
 }

src/application/Context/State/Code/Generation/ICodeBuilderFactory.ts

@@ -1,5 +1,4 @@
-import { ICodeBuilder } from './ICodeBuilder';
 import { IScriptingLanguageFactory } from '@/application/Common/ScriptingLanguage/IScriptingLanguageFactory';
+import { ICodeBuilder } from './ICodeBuilder';
 
-export interface ICodeBuilderFactory extends IScriptingLanguageFactory<ICodeBuilder> {
-}
+export type ICodeBuilderFactory = IScriptingLanguageFactory<ICodeBuilder>;

src/application/Context/State/Code/Generation/IUserScript.ts

@@ -2,6 +2,6 @@ import { SelectedScript } from '@/application/Context/State/Selection/SelectedSc
 import { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
 
 export interface IUserScript {
-    code: string;
-    scriptPositions: Map<SelectedScript, ICodePosition>;
+  code: string;
+  scriptPositions: Map<SelectedScript, ICodePosition>;
 }

src/application/Context/State/Code/Generation/IUserScriptGenerator.ts

@@ -1,9 +1,9 @@
 import { SelectedScript } from '@/application/Context/State/Selection/SelectedScript';
-import { IUserScript } from './IUserScript';
 import { IScriptingDefinition } from '@/domain/IScriptingDefinition';
+import { IUserScript } from './IUserScript';
 
 export interface IUserScriptGenerator {
-    buildCode(
-        selectedScripts: ReadonlyArray<SelectedScript>,
-        scriptingDefinition: IScriptingDefinition): IUserScript;
+  buildCode(
+    selectedScripts: ReadonlyArray<SelectedScript>,
+    scriptingDefinition: IScriptingDefinition): IUserScript;
 }

src/application/Context/State/Code/Generation/Languages/BatchBuilder.ts

@@ -1,16 +1,17 @@
 import { CodeBuilder } from '@/application/Context/State/Code/Generation/CodeBuilder';
 
 export class BatchBuilder extends CodeBuilder {
-    protected getCommentDelimiter(): string {
-        return '::';
-    }
-    protected writeStandardOut(text: string): string {
-        return `echo ${escapeForEcho(text)}`;
-    }
+  protected getCommentDelimiter(): string {
+    return '::';
+  }
+
+  protected writeStandardOut(text: string): string {
+    return `echo ${escapeForEcho(text)}`;
+  }
 }
 
 function escapeForEcho(text: string) {
-    return text
-        .replace(/&/g, '^&')
-        .replace(/%/g, '%%');
+  return text
+    .replace(/&/g, '^&')
+    .replace(/%/g, '%%');
 }

src/application/Context/State/Code/Generation/Languages/ShellBuilder.ts

@@ -1,15 +1,16 @@
 import { CodeBuilder } from '@/application/Context/State/Code/Generation/CodeBuilder';
 
 export class ShellBuilder extends CodeBuilder {
-    protected getCommentDelimiter(): string {
-        return '#';
-    }
-    protected writeStandardOut(text: string): string {
-        return `echo '${escapeForEcho(text)}'`;
-    }
+  protected getCommentDelimiter(): string {
+    return '#';
+  }
+
+  protected writeStandardOut(text: string): string {
+    return `echo '${escapeForEcho(text)}'`;
+  }
 }
 
 function escapeForEcho(text: string) {
-    return text
-        .replace(/'/g, '\'\\\'\'');
+  return text
+    .replace(/'/g, '\'\\\'\'');
 }

src/application/Context/State/Code/Generation/UserScriptGenerator.ts

@@ -1,71 +1,75 @@
 import { SelectedScript } from '@/application/Context/State/Selection/SelectedScript';
-import { IUserScriptGenerator } from './IUserScriptGenerator';
 import { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
-import { CodePosition } from '../Position/CodePosition';
-import { IUserScript } from './IUserScript';
 import { IScriptingDefinition } from '@/domain/IScriptingDefinition';
+import { CodePosition } from '../Position/CodePosition';
+import { IUserScriptGenerator } from './IUserScriptGenerator';
+import { IUserScript } from './IUserScript';
 import { ICodeBuilder } from './ICodeBuilder';
 import { ICodeBuilderFactory } from './ICodeBuilderFactory';
 import { CodeBuilderFactory } from './CodeBuilderFactory';
 
 export class UserScriptGenerator implements IUserScriptGenerator {
-    constructor(private readonly codeBuilderFactory: ICodeBuilderFactory = new CodeBuilderFactory()) {
+  constructor(private readonly codeBuilderFactory: ICodeBuilderFactory = new CodeBuilderFactory()) {
 
+  }
+
+  public buildCode(
+    selectedScripts: ReadonlyArray<SelectedScript>,
+    scriptingDefinition: IScriptingDefinition,
+  ): IUserScript {
+    if (!selectedScripts) { throw new Error('undefined scripts'); }
+    if (!scriptingDefinition) { throw new Error('undefined definition'); }
+    if (!selectedScripts.length) {
+      return { code: '', scriptPositions: new Map<SelectedScript, ICodePosition>() };
     }
-    public buildCode(
-        selectedScripts: ReadonlyArray<SelectedScript>,
-        scriptingDefinition: IScriptingDefinition): IUserScript {
-        if (!selectedScripts) { throw new Error('undefined scripts'); }
-        if (!scriptingDefinition) { throw new Error('undefined definition'); }
-        let scriptPositions = new Map<SelectedScript, ICodePosition>();
-        if (!selectedScripts.length) {
-            return { code: '', scriptPositions };
-        }
-        let builder = this.codeBuilderFactory.create(scriptingDefinition.language);
-        builder = initializeCode(scriptingDefinition.startCode, builder);
-        for (const selection of selectedScripts) {
-            scriptPositions = appendSelection(selection, scriptPositions, builder);
-        }
-        const code = finalizeCode(builder, scriptingDefinition.endCode);
-        return { code, scriptPositions };
-    }
+    let builder = this.codeBuilderFactory.create(scriptingDefinition.language);
+    builder = initializeCode(scriptingDefinition.startCode, builder);
+    const scriptPositions = selectedScripts.reduce((result, selection) => {
+      return appendSelection(selection, result, builder);
+    }, new Map<SelectedScript, ICodePosition>());
+    const code = finalizeCode(builder, scriptingDefinition.endCode);
+    return { code, scriptPositions };
+  }
 }
 
 function initializeCode(startCode: string, builder: ICodeBuilder): ICodeBuilder {
-    if (!startCode) {
-        return builder;
-    }
-    return builder
-        .appendLine(startCode)
-        .appendLine();
+  if (!startCode) {
+    return builder;
+  }
+  return builder
+    .appendLine(startCode)
+    .appendLine();
 }
 
 function finalizeCode(builder: ICodeBuilder, endCode: string): string {
-    if (!endCode) {
-        return builder.toString();
-    }
-    return builder.appendLine()
-        .appendLine(endCode)
-        .toString();
+  if (!endCode) {
+    return builder.toString();
+  }
+  return builder.appendLine()
+    .appendLine(endCode)
+    .toString();
 }
 
 function appendSelection(
-    selection: SelectedScript,
-    scriptPositions: Map<SelectedScript, ICodePosition>,
-    builder: ICodeBuilder): Map<SelectedScript, ICodePosition> {
-    const startPosition = builder.currentLine + 1; // Because first line will be empty to separate scripts
-    builder = appendCode(selection, builder);
-    const endPosition = builder.currentLine - 1;
-    builder.appendLine();
-    const position = new CodePosition(startPosition, endPosition);
-    scriptPositions.set(selection, position);
-    return scriptPositions;
+  selection: SelectedScript,
+  scriptPositions: Map<SelectedScript, ICodePosition>,
+  builder: ICodeBuilder,
+): Map<SelectedScript, ICodePosition> {
+  // Start from next line because first line will be empty to separate scripts
+  const startPosition = builder.currentLine + 1;
+  appendCode(selection, builder);
+  const endPosition = builder.currentLine - 1;
+  builder.appendLine();
+  const position = new CodePosition(startPosition, endPosition);
+  scriptPositions.set(selection, position);
+  return scriptPositions;
 }
 
 function appendCode(selection: SelectedScript, builder: ICodeBuilder): ICodeBuilder {
-    const name = selection.revert ? `${selection.script.name} (revert)` : selection.script.name;
-    const scriptCode = selection.revert ? selection.script.code.revert : selection.script.code.execute;
-    return builder
-        .appendLine()
-        .appendFunction(name, scriptCode);
+  const { script } = selection;
+  const name = selection.revert ? `${script.name} (revert)` : script.name;
+  const scriptCode = selection.revert ? script.code.revert : script.code.execute;
+  return builder
+    .appendLine()
+    .appendFunction(name, scriptCode);
 }

src/application/Context/State/Code/IApplicationCode.ts

@@ -1,7 +1,7 @@
-import { ICodeChangedEvent } from './Event/ICodeChangedEvent';
 import { IEventSource } from '@/infrastructure/Events/IEventSource';
+import { ICodeChangedEvent } from './Event/ICodeChangedEvent';
 
 export interface IApplicationCode {
-    readonly changed: IEventSource<ICodeChangedEvent>;
-    readonly current: string;
+  readonly changed: IEventSource<ICodeChangedEvent>;
+  readonly current: string;
 }

src/application/Context/State/Code/Position/CodePosition.ts

@@ -1,24 +1,25 @@
 import { ICodePosition } from './ICodePosition';
 
 export class CodePosition implements ICodePosition {
-    public get totalLines(): number {
-        return this.endLine - this.startLine;
-    }
+  public get totalLines(): number {
+    return this.endLine - this.startLine;
+  }
 
-    constructor(
-        public readonly startLine: number,
-        public readonly endLine: number) {
-        if (startLine < 0) {
-            throw new Error('Code cannot start in a negative line');
-        }
-        if (endLine < 0) {
-            throw new Error('Code cannot end in a negative line');
-        }
-        if (endLine === startLine) {
-            throw new Error('Empty code');
-        }
-        if (endLine < startLine) {
-            throw new Error('End line cannot be less than start line');
-        }
+  constructor(
+    public readonly startLine: number,
+    public readonly endLine: number,
+  ) {
+    if (startLine < 0) {
+      throw new Error('Code cannot start in a negative line');
     }
+    if (endLine < 0) {
+      throw new Error('Code cannot end in a negative line');
+    }
+    if (endLine === startLine) {
+      throw new Error('Empty code');
+    }
+    if (endLine < startLine) {
+      throw new Error('End line cannot be less than start line');
+    }
+  }
 }

src/application/Context/State/Code/Position/ICodePosition.ts

@@ -1,5 +1,5 @@
 export interface ICodePosition {
-    readonly startLine: number;
-    readonly endLine: number;
-    readonly totalLines: number;
+  readonly startLine: number;
+  readonly endLine: number;
+  readonly totalLines: number;
 }

src/application/Context/State/Filter/FilterResult.ts

@@ -1,18 +1,20 @@
-import { IFilterResult } from './IFilterResult';
 import { IScript } from '@/domain/IScript';
 import { ICategory } from '@/domain/ICategory';
+import { IFilterResult } from './IFilterResult';
 
 export class FilterResult implements IFilterResult {
-    constructor(
-        public readonly scriptMatches: ReadonlyArray<IScript>,
-        public readonly categoryMatches: ReadonlyArray<ICategory>,
-        public readonly query: string) {
-        if (!query) { throw new Error('Query is empty or undefined'); }
-        if (!scriptMatches) { throw new Error('Script matches is undefined'); }
-        if (!categoryMatches) { throw new Error('Category matches is undefined'); }
-    }
-    public hasAnyMatches(): boolean {
-        return this.scriptMatches.length > 0
-         || this.categoryMatches.length > 0;
-    }
+  constructor(
+    public readonly scriptMatches: ReadonlyArray<IScript>,
+    public readonly categoryMatches: ReadonlyArray<ICategory>,
+    public readonly query: string,
+  ) {
+    if (!query) { throw new Error('Query is empty or undefined'); }
+    if (!scriptMatches) { throw new Error('Script matches is undefined'); }
+    if (!categoryMatches) { throw new Error('Category matches is undefined'); }
+  }
+
+  public hasAnyMatches(): boolean {
+    return this.scriptMatches.length > 0
+      || this.categoryMatches.length > 0;
+  }
 }

src/application/Context/State/Filter/IFilterResult.ts

@@ -1,8 +1,8 @@
 import { IScript, ICategory } from '@/domain/ICategory';
 
 export interface IFilterResult {
-    readonly categoryMatches: ReadonlyArray<ICategory>;
-    readonly scriptMatches: ReadonlyArray<IScript>;
-    readonly query: string;
-    hasAnyMatches(): boolean;
+  readonly categoryMatches: ReadonlyArray<ICategory>;
+  readonly scriptMatches: ReadonlyArray<IScript>;
+  readonly query: string;
+  hasAnyMatches(): boolean;
 }

src/application/Context/State/Filter/IUserFilter.ts

@@ -1,10 +1,13 @@
 import { IEventSource } from '@/infrastructure/Events/IEventSource';
 import { IFilterResult } from './IFilterResult';
 
-export interface IUserFilter {
-    readonly currentFilter: IFilterResult | undefined;
-    readonly filtered: IEventSource<IFilterResult>;
-    readonly filterRemoved: IEventSource<void>;
-    setFilter(filter: string): void;
-    removeFilter(): void;
+export interface IReadOnlyUserFilter {
+  readonly currentFilter: IFilterResult | undefined;
+  readonly filtered: IEventSource<IFilterResult>;
+  readonly filterRemoved: IEventSource<void>;
+}
+
+export interface IUserFilter extends IReadOnlyUserFilter {
+  setFilter(filter: string): void;
+  removeFilter(): void;
 }

src/application/Context/State/Filter/UserFilter.ts

@@ -1,52 +1,56 @@
 import { IScript } from '@/domain/IScript';
+import { EventSource } from '@/infrastructure/Events/EventSource';
+import { ICategoryCollection } from '@/domain/ICategoryCollection';
 import { FilterResult } from './FilterResult';
 import { IFilterResult } from './IFilterResult';
 import { IUserFilter } from './IUserFilter';
-import { EventSource } from '@/infrastructure/Events/EventSource';
-import { ICategoryCollection } from '@/domain/ICategoryCollection';
 
 export class UserFilter implements IUserFilter {
-    public readonly filtered = new EventSource<IFilterResult>();
-    public readonly filterRemoved = new EventSource<void>();
-    public currentFilter: IFilterResult | undefined;
+  public readonly filtered = new EventSource<IFilterResult>();
 
-    constructor(private collection: ICategoryCollection) {
+  public readonly filterRemoved = new EventSource<void>();
 
+  public currentFilter: IFilterResult | undefined;
+
+  constructor(private collection: ICategoryCollection) {
+
+  }
+
+  public setFilter(filter: string): void {
+    if (!filter) {
+      throw new Error('Filter must be defined and not empty. Use removeFilter() to remove the filter');
     }
+    const filterLowercase = filter.toLocaleLowerCase();
+    const filteredScripts = this.collection.getAllScripts().filter(
+      (script) => isScriptAMatch(script, filterLowercase),
+    );
+    const filteredCategories = this.collection.getAllCategories().filter(
+      (category) => category.name.toLowerCase().includes(filterLowercase),
+    );
+    const matches = new FilterResult(
+      filteredScripts,
+      filteredCategories,
+      filter,
+    );
+    this.currentFilter = matches;
+    this.filtered.notify(matches);
+  }
 
-    public setFilter(filter: string): void {
-        if (!filter) {
-            throw new Error('Filter must be defined and not empty. Use removeFilter() to remove the filter');
-        }
-        const filterLowercase = filter.toLocaleLowerCase();
-        const filteredScripts = this.collection.getAllScripts().filter(
-            (script) => isScriptAMatch(script, filterLowercase));
-        const filteredCategories = this.collection.getAllCategories().filter(
-            (category) => category.name.toLowerCase().includes(filterLowercase));
-        const matches = new FilterResult(
-            filteredScripts,
-            filteredCategories,
-            filter,
-        );
-        this.currentFilter = matches;
-        this.filtered.notify(matches);
-    }
-
-    public removeFilter(): void {
-        this.currentFilter = undefined;
-        this.filterRemoved.notify();
-    }
+  public removeFilter(): void {
+    this.currentFilter = undefined;
+    this.filterRemoved.notify();
+  }
 }
 
 function isScriptAMatch(script: IScript, filterLowercase: string) {
-    if (script.name.toLowerCase().includes(filterLowercase)) {
-        return true;
-    }
-    if (script.code.execute.toLowerCase().includes(filterLowercase)) {
-        return true;
-    }
-    if (script.code.revert) {
-        return script.code.revert.toLowerCase().includes(filterLowercase);
-    }
-    return false;
+  if (script.name.toLowerCase().includes(filterLowercase)) {
+    return true;
+  }
+  if (script.code.execute.toLowerCase().includes(filterLowercase)) {
+    return true;
+  }
+  if (script.code.revert) {
+    return script.code.revert.toLowerCase().includes(filterLowercase);
+  }
+  return false;
 }

src/application/Context/State/ICategoryCollectionState.ts

@@ -1,13 +1,18 @@
-import { IUserFilter } from './Filter/IUserFilter';
-import { IUserSelection } from './Selection/IUserSelection';
-import { IApplicationCode } from './Code/IApplicationCode';
 import { ICategoryCollection } from '@/domain/ICategoryCollection';
 import { OperatingSystem } from '@/domain/OperatingSystem';
+import { IReadOnlyUserFilter, IUserFilter } from './Filter/IUserFilter';
+import { IReadOnlyUserSelection, IUserSelection } from './Selection/IUserSelection';
+import { IApplicationCode } from './Code/IApplicationCode';
 
-export interface ICategoryCollectionState {
-    readonly code: IApplicationCode;
-    readonly filter: IUserFilter;
-    readonly selection: IUserSelection;
-    readonly collection: ICategoryCollection;
-    readonly os: OperatingSystem;
+export interface IReadOnlyCategoryCollectionState {
+  readonly code: IApplicationCode;
+  readonly os: OperatingSystem;
+  readonly filter: IReadOnlyUserFilter;
+  readonly selection: IReadOnlyUserSelection;
+  readonly collection: ICategoryCollection;
+}
+
+export interface ICategoryCollectionState extends IReadOnlyCategoryCollectionState {
+  readonly filter: IUserFilter;
+  readonly selection: IUserSelection;
 }

src/application/Context/State/Selection/IUserSelection.ts

@@ -1,20 +1,23 @@
-import { SelectedScript } from './SelectedScript';
 import { IScript } from '@/domain/IScript';
 import { ICategory } from '@/domain/ICategory';
 import { IEventSource } from '@/infrastructure/Events/IEventSource';
+import { SelectedScript } from './SelectedScript';
 
-export interface IUserSelection {
-    readonly changed: IEventSource<ReadonlyArray<SelectedScript>>;
-    readonly selectedScripts: ReadonlyArray<SelectedScript>;
-    areAllSelected(category: ICategory): boolean;
-    isAnySelected(category: ICategory): boolean;
-    removeAllInCategory(categoryId: number): void;
-    addOrUpdateAllInCategory(categoryId: number, revert: boolean): void;
-    addSelectedScript(scriptId: string, revert: boolean): void;
-    addOrUpdateSelectedScript(scriptId: string, revert: boolean): void;
-    removeSelectedScript(scriptId: string): void;
-    selectOnly(scripts: ReadonlyArray<IScript>): void;
-    isSelected(scriptId: string): boolean;
-    selectAll(): void;
-    deselectAll(): void;
+export interface IReadOnlyUserSelection {
+  readonly changed: IEventSource<ReadonlyArray<SelectedScript>>;
+  readonly selectedScripts: ReadonlyArray<SelectedScript>;
+  isSelected(scriptId: string): boolean;
+  areAllSelected(category: ICategory): boolean;
+  isAnySelected(category: ICategory): boolean;
+}
+
+export interface IUserSelection extends IReadOnlyUserSelection {
+  removeAllInCategory(categoryId: number): void;
+  addOrUpdateAllInCategory(categoryId: number, revert: boolean): void;
+  addSelectedScript(scriptId: string, revert: boolean): void;
+  addOrUpdateSelectedScript(scriptId: string, revert: boolean): void;
+  removeSelectedScript(scriptId: string): void;
+  selectOnly(scripts: ReadonlyArray<IScript>): void;
+  selectAll(): void;
+  deselectAll(): void;
 }

src/application/Context/State/Selection/SelectedScript.ts

@@ -2,13 +2,13 @@ import { BaseEntity } from '@/infrastructure/Entity/BaseEntity';
 import { IScript } from '@/domain/IScript';
 
 export class SelectedScript extends BaseEntity<string> {
-    constructor(
-        public readonly script: IScript,
-        public readonly revert: boolean,
-        ) {
-        super(script.id);
-        if (revert && !script.canRevert()) {
-            throw new Error('cannot revert an irreversible script');
-        }
+  constructor(
+    public readonly script: IScript,
+    public readonly revert: boolean,
+  ) {
+    super(script.id);
+    if (revert && !script.canRevert()) {
+      throw new Error('cannot revert an irreversible script');
     }
+  }
 }

src/application/Context/State/Selection/UserSelection.ts

@@ -1,141 +1,146 @@
-import { SelectedScript } from './SelectedScript';
-import { IUserSelection } from './IUserSelection';
 import { InMemoryRepository } from '@/infrastructure/Repository/InMemoryRepository';
 import { IScript } from '@/domain/IScript';
 import { EventSource } from '@/infrastructure/Events/EventSource';
 import { IRepository } from '@/infrastructure/Repository/IRepository';
 import { ICategory } from '@/domain/ICategory';
 import { ICategoryCollection } from '@/domain/ICategoryCollection';
+import { IUserSelection } from './IUserSelection';
+import { SelectedScript } from './SelectedScript';
 
 export class UserSelection implements IUserSelection {
-    public readonly changed = new EventSource<ReadonlyArray<SelectedScript>>();
-    private readonly scripts: IRepository<string, SelectedScript>;
+  public readonly changed = new EventSource<ReadonlyArray<SelectedScript>>();
 
-    constructor(
-        private readonly collection: ICategoryCollection,
-        selectedScripts: ReadonlyArray<SelectedScript>) {
-        this.scripts =  new InMemoryRepository<string, SelectedScript>();
-        if (selectedScripts && selectedScripts.length > 0) {
-            for (const script of selectedScripts) {
-                this.scripts.addItem(script);
-            }
-        }
-    }
+  private readonly scripts: IRepository<string, SelectedScript>;
 
-    public areAllSelected(category: ICategory): boolean {
-        if (this.selectedScripts.length === 0) {
-            return false;
-        }
-        const scripts = category.getAllScriptsRecursively();
-        if (this.selectedScripts.length < scripts.length) {
-            return false;
-        }
-        return scripts.every((script) => this.selectedScripts.some((selected) => selected.id === script.id));
+  constructor(
+    private readonly collection: ICategoryCollection,
+    selectedScripts: ReadonlyArray<SelectedScript>,
+  ) {
+    this.scripts = new InMemoryRepository<string, SelectedScript>();
+    for (const script of selectedScripts) {
+      this.scripts.addItem(script);
     }
+  }
 
-    public isAnySelected(category: ICategory): boolean {
-        if (this.selectedScripts.length === 0) {
-            return false;
-        }
-        return this.selectedScripts.some((s) => category.includes(s.script));
+  public areAllSelected(category: ICategory): boolean {
+    if (this.selectedScripts.length === 0) {
+      return false;
     }
+    const scripts = category.getAllScriptsRecursively();
+    if (this.selectedScripts.length < scripts.length) {
+      return false;
+    }
+    return scripts.every(
+      (script) => this.selectedScripts.some((selected) => selected.id === script.id),
+    );
+  }
 
-    public removeAllInCategory(categoryId: number): void {
-        const category = this.collection.findCategory(categoryId);
-        const scriptsToRemove = category.getAllScriptsRecursively()
-            .filter((script) => this.scripts.exists(script.id));
-        if (!scriptsToRemove.length) {
-            return;
-        }
-        for (const script of scriptsToRemove) {
-            this.scripts.removeItem(script.id);
-        }
-        this.changed.notify(this.scripts.getItems());
+  public isAnySelected(category: ICategory): boolean {
+    if (this.selectedScripts.length === 0) {
+      return false;
     }
+    return this.selectedScripts.some((s) => category.includes(s.script));
+  }
 
-    public addOrUpdateAllInCategory(categoryId: number, revert: boolean = false): void {
-        const category = this.collection.findCategory(categoryId);
-        const scriptsToAddOrUpdate = category.getAllScriptsRecursively()
-            .filter((script) =>
-                !this.scripts.exists(script.id)
-                    || this.scripts.getById(script.id).revert !== revert,
-            );
-        if (!scriptsToAddOrUpdate.length) {
-            return;
-        }
-        for (const script of scriptsToAddOrUpdate) {
-            const selectedScript = new SelectedScript(script, revert);
-            this.scripts.addOrUpdateItem(selectedScript);
-        }
-        this.changed.notify(this.scripts.getItems());
+  public removeAllInCategory(categoryId: number): void {
+    const category = this.collection.findCategory(categoryId);
+    const scriptsToRemove = category.getAllScriptsRecursively()
+      .filter((script) => this.scripts.exists(script.id));
+    if (!scriptsToRemove.length) {
+      return;
     }
+    for (const script of scriptsToRemove) {
+      this.scripts.removeItem(script.id);
+    }
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    public addSelectedScript(scriptId: string, revert: boolean): void {
-        const script = this.collection.findScript(scriptId);
-        if (!script) {
-            throw new Error(`Cannot add (id: ${scriptId}) as it is unknown`);
-        }
-        const selectedScript = new SelectedScript(script, revert);
-        this.scripts.addItem(selectedScript);
-        this.changed.notify(this.scripts.getItems());
+  public addOrUpdateAllInCategory(categoryId: number, revert = false): void {
+    const scriptsToAddOrUpdate = this.collection
+      .findCategory(categoryId)
+      .getAllScriptsRecursively()
+      .filter(
+        (script) => !this.scripts.exists(script.id)
+          || this.scripts.getById(script.id).revert !== revert,
+      )
+      .map((script) => new SelectedScript(script, revert));
+    if (!scriptsToAddOrUpdate.length) {
+      return;
     }
+    for (const script of scriptsToAddOrUpdate) {
+      this.scripts.addOrUpdateItem(script);
+    }
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    public addOrUpdateSelectedScript(scriptId: string, revert: boolean): void {
-        const script = this.collection.findScript(scriptId);
-        const selectedScript = new SelectedScript(script, revert);
-        this.scripts.addOrUpdateItem(selectedScript);
-        this.changed.notify(this.scripts.getItems());
+  public addSelectedScript(scriptId: string, revert: boolean): void {
+    const script = this.collection.findScript(scriptId);
+    if (!script) {
+      throw new Error(`Cannot add (id: ${scriptId}) as it is unknown`);
     }
+    const selectedScript = new SelectedScript(script, revert);
+    this.scripts.addItem(selectedScript);
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    public removeSelectedScript(scriptId: string): void {
-        this.scripts.removeItem(scriptId);
-        this.changed.notify(this.scripts.getItems());
-    }
+  public addOrUpdateSelectedScript(scriptId: string, revert: boolean): void {
+    const script = this.collection.findScript(scriptId);
+    const selectedScript = new SelectedScript(script, revert);
+    this.scripts.addOrUpdateItem(selectedScript);
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    public isSelected(scriptId: string): boolean {
-        return this.scripts.exists(scriptId);
-    }
+  public removeSelectedScript(scriptId: string): void {
+    this.scripts.removeItem(scriptId);
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    /** Get users scripts based on his/her selections */
-    public get selectedScripts(): ReadonlyArray<SelectedScript> {
-        return this.scripts.getItems();
-    }
+  public isSelected(scriptId: string): boolean {
+    return this.scripts.exists(scriptId);
+  }
 
-    public selectAll(): void {
-        for (const script of this.collection.getAllScripts()) {
-            if (!this.scripts.exists(script.id)) {
-                const selection = new SelectedScript(script, false);
-                this.scripts.addItem(selection);
-            }
-        }
-        this.changed.notify(this.scripts.getItems());
-    }
+  /** Get users scripts based on his/her selections */
+  public get selectedScripts(): ReadonlyArray<SelectedScript> {
+    return this.scripts.getItems();
+  }
 
-    public deselectAll(): void {
-        const selectedScriptIds = this.scripts.getItems().map((script) => script.id);
-        for (const scriptId of selectedScriptIds) {
-            this.scripts.removeItem(scriptId);
-        }
-        this.changed.notify([]);
+  public selectAll(): void {
+    const scriptsToSelect = this.collection
+      .getAllScripts()
+      .filter((script) => !this.scripts.exists(script.id))
+      .map((script) => new SelectedScript(script, false));
+    for (const script of scriptsToSelect) {
+      this.scripts.addItem(script);
     }
+    this.changed.notify(this.scripts.getItems());
+  }
 
-    public selectOnly(scripts: readonly IScript[]): void {
-        if (!scripts || scripts.length === 0) {
-            throw new Error('Scripts are empty. Use deselectAll() if you want to deselect everything');
-        }
-        // Unselect from selected scripts
-        if (this.scripts.length !== 0) {
-            this.scripts.getItems()
-                .filter((existing) => !scripts.some((script) => existing.id === script.id))
-                .map((script) => script.id)
-                .forEach((scriptId) => this.scripts.removeItem(scriptId));
-        }
-        // Select from unselected scripts
-        const unselectedScripts = scripts.filter((script) => !this.scripts.exists(script.id));
-        for (const toSelect of unselectedScripts) {
-            const selection = new SelectedScript(toSelect, false);
-            this.scripts.addItem(selection);
-        }
-        this.changed.notify(this.scripts.getItems());
+  public deselectAll(): void {
+    const selectedScriptIds = this.scripts.getItems().map((script) => script.id);
+    for (const scriptId of selectedScriptIds) {
+      this.scripts.removeItem(scriptId);
     }
+    this.changed.notify([]);
+  }
+
+  public selectOnly(scripts: readonly IScript[]): void {
+    if (!scripts || scripts.length === 0) {
+      throw new Error('Scripts are empty. Use deselectAll() if you want to deselect everything');
+    }
+    // Unselect from selected scripts
+    if (this.scripts.length !== 0) {
+      this.scripts.getItems()
+        .filter((existing) => !scripts.some((script) => existing.id === script.id))
+        .map((script) => script.id)
+        .forEach((scriptId) => this.scripts.removeItem(scriptId));
+    }
+    // Select from unselected scripts
+    const unselectedScripts = scripts
+      .filter((script) => !this.scripts.exists(script.id))
+      .map((script) => new SelectedScript(script, false));
+    for (const toSelect of unselectedScripts) {
+      this.scripts.addItem(toSelect);
+    }
+    this.changed.notify(this.scripts.getItems());
+  }
 }

src/application/Environment/BrowserOs/BrowserOsDetector.ts

@@ -3,52 +3,55 @@ import { DetectorBuilder } from './DetectorBuilder';
 import { IBrowserOsDetector } from './IBrowserOsDetector';
 
 export class BrowserOsDetector implements IBrowserOsDetector {
-    private readonly detectors = BrowserDetectors;
-    public detect(userAgent: string): OperatingSystem | undefined {
-        if (!userAgent) {
-            return undefined;
-        }
-        for (const detector of this.detectors) {
-            const os = detector.detect(userAgent);
-            if (os !== undefined) {
-                return os;
-            }
-        }
-        return undefined;
+  private readonly detectors = BrowserDetectors;
+
+  public detect(userAgent: string): OperatingSystem | undefined {
+    if (!userAgent) {
+      return undefined;
     }
+    for (const detector of this.detectors) {
+      const os = detector.detect(userAgent);
+      if (os !== undefined) {
+        return os;
+      }
+    }
+    return undefined;
+  }
 }
 
 // Reference: https://github.com/keithws/browser-report/blob/master/index.js#L304
-const BrowserDetectors =
-[
-    define(OperatingSystem.KaiOS, (b) =>
-        b.mustInclude('KAIOS')),
-    define(OperatingSystem.ChromeOS, (b) =>
-        b.mustInclude('CrOS')),
-    define(OperatingSystem.BlackBerryOS, (b) =>
-        b.mustInclude('BlackBerry')),
-    define(OperatingSystem.BlackBerryTabletOS, (b) =>
-        b.mustInclude('RIM Tablet OS')),
-    define(OperatingSystem.BlackBerry, (b) =>
-        b.mustInclude('BB10')),
-    define(OperatingSystem.Android, (b) =>
-        b.mustInclude('Android').mustNotInclude('Windows Phone')),
-    define(OperatingSystem.Android, (b) =>
-        b.mustInclude('Adr').mustNotInclude('Windows Phone')),
-    define(OperatingSystem.iOS, (b) =>
-        b.mustInclude('like Mac OS X')),
-    define(OperatingSystem.Linux, (b) =>
-        b.mustInclude('Linux').mustNotInclude('Android').mustNotInclude('Adr')),
-    define(OperatingSystem.Windows, (b) =>
-        b.mustInclude('Windows').mustNotInclude('Windows Phone')),
-    define(OperatingSystem.WindowsPhone, (b) =>
-        b.mustInclude('Windows Phone')),
-    define(OperatingSystem.macOS, (b) =>
-        b.mustInclude('OS X').mustNotInclude('Android').mustNotInclude('like Mac OS X')),
+const BrowserDetectors = [
+  define(OperatingSystem.KaiOS, (b) => b
+    .mustInclude('KAIOS')),
+  define(OperatingSystem.ChromeOS, (b) => b
+    .mustInclude('CrOS')),
+  define(OperatingSystem.BlackBerryOS, (b) => b
+    .mustInclude('BlackBerry')),
+  define(OperatingSystem.BlackBerryTabletOS, (b) => b
+    .mustInclude('RIM Tablet OS')),
+  define(OperatingSystem.BlackBerry, (b) => b
+    .mustInclude('BB10')),
+  define(OperatingSystem.Android, (b) => b
+    .mustInclude('Android').mustNotInclude('Windows Phone')),
+  define(OperatingSystem.Android, (b) => b
+    .mustInclude('Adr').mustNotInclude('Windows Phone')),
+  define(OperatingSystem.iOS, (b) => b
+    .mustInclude('like Mac OS X')),
+  define(OperatingSystem.Linux, (b) => b
+    .mustInclude('Linux').mustNotInclude('Android').mustNotInclude('Adr')),
+  define(OperatingSystem.Windows, (b) => b
+    .mustInclude('Windows').mustNotInclude('Windows Phone')),
+  define(OperatingSystem.WindowsPhone, (b) => b
+    .mustInclude('Windows Phone')),
+  define(OperatingSystem.macOS, (b) => b
+    .mustInclude('OS X').mustNotInclude('Android').mustNotInclude('like Mac OS X')),
 ];
 
-function define(os: OperatingSystem, applyRules: (builder: DetectorBuilder) => DetectorBuilder): IBrowserOsDetector {
-    const builder = new DetectorBuilder(os);
-    applyRules(builder);
-    return builder.build();
+function define(
+  os: OperatingSystem,
+  applyRules: (builder: DetectorBuilder) => DetectorBuilder,
+): IBrowserOsDetector {
+  const builder = new DetectorBuilder(os);
+  applyRules(builder);
+  return builder.build();
 }

src/application/Environment/BrowserOs/DetectorBuilder.ts

@@ -1,53 +1,54 @@
-import { IBrowserOsDetector } from './IBrowserOsDetector';
 import { OperatingSystem } from '@/domain/OperatingSystem';
+import { IBrowserOsDetector } from './IBrowserOsDetector';
 
 export class DetectorBuilder {
-    private readonly existingPartsInUserAgent = new Array<string>();
-    private readonly notExistingPartsInUserAgent = new Array<string>();
+  private readonly existingPartsInUserAgent = new Array<string>();
 
-    constructor(private readonly os: OperatingSystem) { }
+  private readonly notExistingPartsInUserAgent = new Array<string>();
 
-    public mustInclude(str: string): DetectorBuilder {
-        return this.add(str, this.existingPartsInUserAgent);
+  constructor(private readonly os: OperatingSystem) { }
+
+  public mustInclude(str: string): DetectorBuilder {
+    return this.add(str, this.existingPartsInUserAgent);
+  }
+
+  public mustNotInclude(str: string): DetectorBuilder {
+    return this.add(str, this.notExistingPartsInUserAgent);
+  }
+
+  public build(): IBrowserOsDetector {
+    if (!this.existingPartsInUserAgent.length) {
+      throw new Error('Must include at least a part');
     }
+    return {
+      detect: (agent) => this.detect(agent),
+    };
+  }
 
-    public mustNotInclude(str: string): DetectorBuilder {
-        return this.add(str, this.notExistingPartsInUserAgent);
+  private detect(userAgent: string): OperatingSystem {
+    if (!userAgent) {
+      throw new Error('User agent is null or undefined');
     }
+    if (this.existingPartsInUserAgent.some((part) => !userAgent.includes(part))) {
+      return undefined;
+    }
+    if (this.notExistingPartsInUserAgent.some((part) => userAgent.includes(part))) {
+      return undefined;
+    }
+    return this.os;
+  }
 
-    public build(): IBrowserOsDetector {
-        if (!this.existingPartsInUserAgent.length) {
-            throw new Error('Must include at least a part');
-        }
-        return {
-            detect: (agent) => this.detect(agent),
-        };
+  private add(part: string, array: string[]): DetectorBuilder {
+    if (!part) {
+      throw new Error('part is empty or undefined');
     }
-
-    private detect(userAgent: string): OperatingSystem {
-        if (!userAgent) {
-            throw new Error('User agent is null or undefined');
-        }
-        if (this.existingPartsInUserAgent.some((part) => !userAgent.includes(part))) {
-            return undefined;
-        }
-        if (this.notExistingPartsInUserAgent.some((part) => userAgent.includes(part))) {
-            return undefined;
-        }
-        return this.os;
+    if (this.existingPartsInUserAgent.includes(part)) {
+      throw new Error(`part ${part} is already included as existing part`);
     }
-
-    private add(part: string, array: string[]): DetectorBuilder {
-        if (!part) {
-            throw new Error('part is empty or undefined');
-        }
-        if (this.existingPartsInUserAgent.includes(part)) {
-            throw new Error(`part ${part} is already included as existing part`);
-        }
-        if (this.notExistingPartsInUserAgent.includes(part)) {
-            throw new Error(`part ${part} is already included as not existing part`);
-        }
-        array.push(part);
-        return this;
+    if (this.notExistingPartsInUserAgent.includes(part)) {
+      throw new Error(`part ${part} is already included as not existing part`);
     }
+    array.push(part);
+    return this;
+  }
 }

src/application/Environment/BrowserOs/IBrowserOsDetector.ts

@@ -1,5 +1,5 @@
 import { OperatingSystem } from '@/domain/OperatingSystem';
 
 export interface IBrowserOsDetector {
-    detect(userAgent: string): OperatingSystem | undefined;
+  detect(userAgent: string): OperatingSystem | undefined;
 }

src/application/Environment/Environment.ts

@@ -1,80 +1,89 @@
+import { OperatingSystem } from '@/domain/OperatingSystem';
 import { BrowserOsDetector } from './BrowserOs/BrowserOsDetector';
 import { IBrowserOsDetector } from './BrowserOs/IBrowserOsDetector';
 import { IEnvironment } from './IEnvironment';
-import { OperatingSystem } from '@/domain/OperatingSystem';
 
-interface IEnvironmentVariables {
-    readonly window: Window & typeof globalThis;
-    readonly process: NodeJS.Process;
-    readonly navigator: Navigator;
+export interface IEnvironmentVariables {
+  readonly window: Window & typeof globalThis;
+  readonly process: NodeJS.Process;
+  readonly navigator: Navigator;
 }
 
 export class Environment implements IEnvironment {
-    public static readonly CurrentEnvironment: IEnvironment = new Environment({
-        window,
-        process,
-        navigator,
-    });
-    public readonly isDesktop: boolean;
-    public readonly os: OperatingSystem;
-    protected constructor(
-      variables: IEnvironmentVariables,
-      browserOsDetector: IBrowserOsDetector = new BrowserOsDetector()) {
-        if (!variables) {
-            throw new Error('variables is null or empty');
-        }
-        this.isDesktop = isDesktop(variables);
-        this.os = this.isDesktop ?
-            getDesktopOsType(getProcessPlatform(variables))
-          : browserOsDetector.detect(getUserAgent(variables));
+  public static readonly CurrentEnvironment: IEnvironment = new Environment({
+    window,
+    process: typeof process !== 'undefined' ? process /* electron only */ : undefined,
+    navigator,
+  });
+
+  public readonly isDesktop: boolean;
+
+  public readonly os: OperatingSystem;
+
+  protected constructor(
+    variables: IEnvironmentVariables,
+    browserOsDetector: IBrowserOsDetector = new BrowserOsDetector(),
+  ) {
+    if (!variables) {
+      throw new Error('variables is null or empty');
     }
+    this.isDesktop = isDesktop(variables);
+    if (this.isDesktop) {
+      this.os = getDesktopOsType(getProcessPlatform(variables));
+    } else {
+      const userAgent = getUserAgent(variables);
+      this.os = !userAgent ? undefined : browserOsDetector.detect(userAgent);
+    }
+  }
 }
 
 function getUserAgent(variables: IEnvironmentVariables): string {
-    if (!variables.window || !variables.window.navigator) {
-        return undefined;
-    }
-    return variables.window.navigator.userAgent;
+  if (!variables.window || !variables.window.navigator) {
+    return undefined;
+  }
+  return variables.window.navigator.userAgent;
 }
 
 function getProcessPlatform(variables: IEnvironmentVariables): string {
-    if (!variables.process || !variables.process.platform) {
-        return undefined;
-    }
-    return variables.process.platform;
+  if (!variables.process || !variables.process.platform) {
+    return undefined;
+  }
+  return variables.process.platform;
 }
 
 function getDesktopOsType(processPlatform: string): OperatingSystem | undefined {
-    // https://nodejs.org/api/process.html#process_process_platform
-    if (processPlatform === 'darwin') {
-        return OperatingSystem.macOS;
-    } else if (processPlatform === 'win32') {
-        return OperatingSystem.Windows;
-    } else if (processPlatform === 'linux') {
-        return OperatingSystem.Linux;
-    }
-    return undefined;
+  // https://nodejs.org/api/process.html#process_process_platform
+  switch (processPlatform) {
+    case 'darwin':
+      return OperatingSystem.macOS;
+    case 'win32':
+      return OperatingSystem.Windows;
+    case 'linux':
+      return OperatingSystem.Linux;
+    default:
+      return undefined;
+  }
 }
 
 function isDesktop(variables: IEnvironmentVariables): boolean {
-    // More: https://github.com/electron/electron/issues/2288
-    // Renderer process
-    if (variables.window
-        && variables.window.process
-        && variables.window.process.type === 'renderer') {
-        return true;
-    }
-    // Main process
-    if (variables.process
-        && variables.process.versions
-        && Boolean(variables.process.versions.electron)) {
-        return true;
-    }
-    // Detect the user agent when the `nodeIntegration` option is set to true
-    if (variables.navigator
-        && variables.navigator.userAgent
-        && variables.navigator.userAgent.includes('Electron')) {
-        return true;
-    }
-    return false;
+  // More: https://github.com/electron/electron/issues/2288
+  // Renderer process
+  if (variables.window
+    && variables.window.process
+    && variables.window.process.type === 'renderer') {
+    return true;
+  }
+  // Main process
+  if (variables.process
+    && variables.process.versions
+    && Boolean(variables.process.versions.electron)) {
+    return true;
+  }
+  // Detect the user agent when the `nodeIntegration` option is set to true
+  if (variables.navigator
+    && variables.navigator.userAgent
+    && variables.navigator.userAgent.includes('Electron')) {
+    return true;
+  }
+  return false;
 }

src/application/Environment/IEnvironment.ts

@@ -1,6 +1,6 @@
 import { OperatingSystem } from '@/domain/OperatingSystem';
 
 export interface IEnvironment {
-    readonly isDesktop: boolean;
-    readonly os: OperatingSystem;
+  readonly isDesktop: boolean;
+  readonly os: OperatingSystem;
 }

src/application/IApplicationFactory.ts

@@ -1,5 +1,5 @@
 import { IApplication } from '@/domain/IApplication';
 
 export interface IApplicationFactory {
-    getApp(): Promise<IApplication>;
+  getApp(): Promise<IApplication>;
 }

src/application/Parser/ApplicationParser.ts

@@ -1,38 +1,41 @@
+import { CollectionData } from 'js-yaml-loader!@/*';
 import { IApplication } from '@/domain/IApplication';
 import { IProjectInformation } from '@/domain/IProjectInformation';
 import { ICategoryCollection } from '@/domain/ICategoryCollection';
-import { parseCategoryCollection } from './CategoryCollectionParser';
 import WindowsData from 'js-yaml-loader!@/application/collections/windows.yaml';
 import MacOsData from 'js-yaml-loader!@/application/collections/macos.yaml';
-import { CollectionData } from 'js-yaml-loader!@/*';
 import { parseProjectInformation } from '@/application/Parser/ProjectInformationParser';
 import { Application } from '@/domain/Application';
+import { parseCategoryCollection } from './CategoryCollectionParser';
 
 export function parseApplication(
-    parser = CategoryCollectionParser,
-    processEnv: NodeJS.ProcessEnv = process.env,
-    collectionsData = PreParsedCollections): IApplication {
-    validateCollectionsData(collectionsData);
-    const information = parseProjectInformation(processEnv);
-    const collections = collectionsData.map((collection) => parser(collection, information));
-    const app = new Application(information, collections);
-    return app;
+  parser = CategoryCollectionParser,
+  processEnv: NodeJS.ProcessEnv = process.env,
+  collectionsData = PreParsedCollections,
+): IApplication {
+  validateCollectionsData(collectionsData);
+  const information = parseProjectInformation(processEnv);
+  const collections = collectionsData.map((collection) => parser(collection, information));
+  const app = new Application(information, collections);
+  return app;
 }
 
 export type CategoryCollectionParserType
     = (file: CollectionData, info: IProjectInformation) => ICategoryCollection;
 
-const CategoryCollectionParser: CategoryCollectionParserType
-    = (file, info) => parseCategoryCollection(file, info);
+const CategoryCollectionParser: CategoryCollectionParserType = (file, info) => {
+  return parseCategoryCollection(file, info);
+};
 
-const PreParsedCollections: readonly CollectionData []
-    = [ WindowsData, MacOsData ];
+const PreParsedCollections: readonly CollectionData [] = [
+  WindowsData, MacOsData,
+];
 
 function validateCollectionsData(collections: readonly CollectionData[]) {
-    if (!collections.length) {
-        throw new Error('no collection provided');
-    }
-    if (collections.some((collection) => !collection)) {
-        throw new Error('undefined collection provided');
-    }
+  if (!collections.length) {
+    throw new Error('no collection provided');
+  }
+  if (collections.some((collection) => !collection)) {
+    throw new Error('undefined collection provided');
+  }
 }

src/application/Parser/CategoryCollectionParser.ts

@@ -1,40 +1,37 @@
-import { Category } from '@/domain/Category';
 import { CollectionData } from 'js-yaml-loader!@/*';
-import { parseCategory } from './CategoryParser';
 import { OperatingSystem } from '@/domain/OperatingSystem';
-import { createEnumParser } from '../Common/Enum';
 import { ICategoryCollection } from '@/domain/ICategoryCollection';
 import { CategoryCollection } from '@/domain/CategoryCollection';
 import { IProjectInformation } from '@/domain/IProjectInformation';
+import { createEnumParser } from '../Common/Enum';
+import { parseCategory } from './CategoryParser';
 import { CategoryCollectionParseContext } from './Script/CategoryCollectionParseContext';
 import { ScriptingDefinitionParser } from './ScriptingDefinition/ScriptingDefinitionParser';
 
 export function parseCategoryCollection(
-    content: CollectionData,
-    info: IProjectInformation,
-    osParser = createEnumParser(OperatingSystem)): ICategoryCollection {
-    validate(content);
-    const scripting = new ScriptingDefinitionParser()
-        .parse(content.scripting, info);
-    const context = new CategoryCollectionParseContext(content.functions, scripting);
-    const categories = new Array<Category>();
-    for (const action of content.actions) {
-        const category = parseCategory(action, context);
-        categories.push(category);
-    }
-    const os = osParser.parseEnum(content.os, 'os');
-    const collection = new CategoryCollection(
-        os,
-        categories,
-        scripting);
-    return collection;
+  content: CollectionData,
+  info: IProjectInformation,
+  osParser = createEnumParser(OperatingSystem),
+): ICategoryCollection {
+  validate(content);
+  const scripting = new ScriptingDefinitionParser()
+    .parse(content.scripting, info);
+  const context = new CategoryCollectionParseContext(content.functions, scripting);
+  const categories = content.actions.map((action) => parseCategory(action, context));
+  const os = osParser.parseEnum(content.os, 'os');
+  const collection = new CategoryCollection(
+    os,
+    categories,
+    scripting,
+  );
+  return collection;
 }
 
 function validate(content: CollectionData): void {
-    if (!content) {
-        throw new Error('content is null or undefined');
-    }
-    if (!content.actions || content.actions.length <= 0) {
-        throw new Error('content does not define any action');
-    }
+  if (!content) {
+    throw new Error('content is null or undefined');
+  }
+  if (!content.actions || content.actions.length <= 0) {
+    throw new Error('content does not define any action');
+  }
 }

src/application/Parser/CategoryParser.ts

@@ -1,71 +1,86 @@
-import { CategoryData, ScriptData, CategoryOrScriptData } from 'js-yaml-loader!@/*';
+import {
+  CategoryData, ScriptData, CategoryOrScriptData, InstructionHolder,
+} from 'js-yaml-loader!@/*';
 import { Script } from '@/domain/Script';
 import { Category } from '@/domain/Category';
 import { parseDocUrls } from './DocumentationParser';
 import { ICategoryCollectionParseContext } from './Script/ICategoryCollectionParseContext';
 import { parseScript } from './Script/ScriptParser';
 
-let categoryIdCounter: number = 0;
+let categoryIdCounter = 0;
 
-interface ICategoryChildren {
-    subCategories: Category[];
-    subScripts: Script[];
-}
-
-export function parseCategory(category: CategoryData, context: ICategoryCollectionParseContext): Category {
-    if (!context) { throw new Error('undefined context'); }
-    ensureValid(category);
-    const children: ICategoryChildren = {
-        subCategories: new Array<Category>(),
-        subScripts: new Array<Script>(),
-    };
-    for (const data of category.children) {
-        parseCategoryChild(data, children, category, context);
-    }
-    return new Category(
-        /*id*/ categoryIdCounter++,
-        /*name*/ category.category,
-        /*docs*/ parseDocUrls(category),
-        /*categories*/ children.subCategories,
-        /*scripts*/ children.subScripts,
-    );
+export function parseCategory(
+  category: CategoryData,
+  context: ICategoryCollectionParseContext,
+): Category {
+  if (!context) { throw new Error('undefined context'); }
+  ensureValid(category);
+  const children: ICategoryChildren = {
+    subCategories: new Array<Category>(),
+    subScripts: new Array<Script>(),
+  };
+  for (const data of category.children) {
+    parseCategoryChild(data, children, category, context);
+  }
+  return new Category(
+    /* id: */ categoryIdCounter++,
+    /* name: */ category.category,
+    /* docs: */ parseDocUrls(category),
+    /* categories: */ children.subCategories,
+    /* scripts: */ children.subScripts,
+  );
 }
 
 function ensureValid(category: CategoryData) {
-    if (!category) {
-        throw Error('category is null or undefined');
-    }
-    if (!category.children || category.children.length === 0) {
-        throw Error(`category has no children: "${category.category}"`);
-    }
-    if (!category.category || category.category.length === 0) {
-        throw Error('category has no name');
-    }
+  if (!category) {
+    throw Error('category is null or undefined');
+  }
+  if (!category.children || category.children.length === 0) {
+    throw Error(`category has no children: "${category.category}"`);
+  }
+  if (!category.category || category.category.length === 0) {
+    throw Error('category has no name');
+  }
+}
+
+interface ICategoryChildren {
+  subCategories: Category[];
+  subScripts: Script[];
 }
 
 function parseCategoryChild(
-    data: CategoryOrScriptData,
-    children: ICategoryChildren,
-    parent: CategoryData,
-    context: ICategoryCollectionParseContext) {
-    if (isCategory(data)) {
-        const subCategory = parseCategory(data as CategoryData, context);
-        children.subCategories.push(subCategory);
-    } else if (isScript(data)) {
-        const scriptData = data as ScriptData;
-        const script = parseScript(scriptData, context);
-        children.subScripts.push(script);
-    } else {
-        throw new Error(`Child element is neither a category or a script.
+  data: CategoryOrScriptData,
+  children: ICategoryChildren,
+  parent: CategoryData,
+  context: ICategoryCollectionParseContext,
+) {
+  if (isCategory(data)) {
+    const subCategory = parseCategory(data as CategoryData, context);
+    children.subCategories.push(subCategory);
+  } else if (isScript(data)) {
+    const scriptData = data as ScriptData;
+    const script = parseScript(scriptData, context);
+    children.subScripts.push(script);
+  } else {
+    throw new Error(`Child element is neither a category or a script.
                 Parent: ${parent.category}, element: ${JSON.stringify(data)}`);
-    }
+  }
 }
 
-function isScript(data: any): boolean {
-    return (data.code && data.code.length > 0)
-        || data.call;
+function isScript(data: CategoryOrScriptData): data is ScriptData {
+  const holder = (data as InstructionHolder);
+  return hasCode(holder) || hasCall(holder);
 }
 
-function isCategory(data: any): boolean {
-    return data.category && data.category.length > 0;
+function isCategory(data: CategoryOrScriptData): data is CategoryData {
+  const { category } = data as CategoryData;
+  return category && category.length > 0;
+}
+
+function hasCode(holder: InstructionHolder): boolean {
+  return holder.code && holder.code.length > 0;
+}
+
+function hasCall(holder: InstructionHolder) {
+  return holder.call !== undefined;
 }

src/application/Parser/DocumentationParser.ts

@@ -1,61 +1,64 @@
 import { DocumentableData, DocumentationUrlsData } from 'js-yaml-loader!@/*';
 
 export function parseDocUrls(documentable: DocumentableData): ReadonlyArray<string> {
-    if (!documentable) {
-        throw new Error('documentable is null or undefined');
-    }
-    const docs = documentable.docs;
-    if (!docs || !docs.length) {
-        return [];
-    }
-    let result = new DocumentationUrlContainer();
-    result = addDocs(docs, result);
-    return result.getAll();
+  if (!documentable) {
+    throw new Error('documentable is null or undefined');
+  }
+  const { docs } = documentable;
+  if (!docs || !docs.length) {
+    return [];
+  }
+  let result = new DocumentationUrlContainer();
+  result = addDocs(docs, result);
+  return result.getAll();
 }
 
-function addDocs(docs: DocumentationUrlsData, urls: DocumentationUrlContainer): DocumentationUrlContainer {
-    if (docs instanceof Array) {
-        urls.addUrls(docs);
-    } else if (typeof docs === 'string') {
-        urls.addUrl(docs);
-    } else {
-        throw new Error('Docs field (documentation url) must a string or array of strings');
-    }
-    return urls;
+function addDocs(
+  docs: DocumentationUrlsData,
+  urls: DocumentationUrlContainer,
+): DocumentationUrlContainer {
+  if (docs instanceof Array) {
+    urls.addUrls(docs);
+  } else if (typeof docs === 'string') {
+    urls.addUrl(docs);
+  } else {
+    throw new Error('Docs field (documentation url) must a string or array of strings');
+  }
+  return urls;
 }
 
 class DocumentationUrlContainer {
-    private readonly urls = new Array<string>();
+  private readonly urls = new Array<string>();
 
-    public addUrl(url: string) {
-        validateUrl(url);
-        this.urls.push(url);
-    }
+  public addUrl(url: string) {
+    validateUrl(url);
+    this.urls.push(url);
+  }
 
-    public addUrls(urls: readonly any[]) {
-        for (const url of urls) {
-            if (typeof url !== 'string') {
-                throw new Error('Docs field (documentation url) must be an array of strings');
-            }
-            this.addUrl(url);
-        }
+  public addUrls(urls: readonly string[]) {
+    for (const url of urls) {
+      if (typeof url !== 'string') {
+        throw new Error('Docs field (documentation url) must be an array of strings');
+      }
+      this.addUrl(url);
     }
+  }
 
-    public getAll(): ReadonlyArray<string> {
-        return this.urls;
-    }
+  public getAll(): ReadonlyArray<string> {
+    return this.urls;
+  }
 }
 
 function validateUrl(docUrl: string): void {
-    if (!docUrl) {
-        throw new Error('Documentation url is null or empty');
-    }
-    if (docUrl.includes('\n')) {
-        throw new Error('Documentation url cannot be multi-lined.');
-    }
-    const res = docUrl.match(
-        /(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g);
-    if (res == null) {
-        throw new Error(`Invalid documentation url: ${docUrl}`);
-    }
+  if (!docUrl) {
+    throw new Error('Documentation url is null or empty');
+  }
+  if (docUrl.includes('\n')) {
+    throw new Error('Documentation url cannot be multi-lined.');
+  }
+  const validUrlRegex = /(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_+.~#?&//=]*)/g;
+  const res = docUrl.match(validUrlRegex);
+  if (res == null) {
+    throw new Error(`Invalid documentation url: ${docUrl}`);
+  }
 }

src/application/Parser/ProjectInformationParser.ts

@@ -2,11 +2,12 @@ import { IProjectInformation } from '@/domain/IProjectInformation';
 import { ProjectInformation } from '@/domain/ProjectInformation';
 
 export function parseProjectInformation(
-    environment: NodeJS.ProcessEnv): IProjectInformation {
-    return new ProjectInformation(
-        environment.VUE_APP_NAME,
-        environment.VUE_APP_VERSION,
-        environment.VUE_APP_REPOSITORY_URL,
-        environment.VUE_APP_HOMEPAGE_URL,
-    );
+  environment: NodeJS.ProcessEnv,
+): IProjectInformation {
+  return new ProjectInformation(
+    environment.VUE_APP_NAME,
+    environment.VUE_APP_VERSION,
+    environment.VUE_APP_REPOSITORY_URL,
+    environment.VUE_APP_HOMEPAGE_URL,
+  );
 }

src/application/Parser/Script/CategoryCollectionParseContext.ts

@@ -1,6 +1,6 @@
+import { FunctionData } from 'js-yaml-loader!@/*';
 import { IScriptingDefinition } from '@/domain/IScriptingDefinition';
 import { ILanguageSyntax } from '@/domain/ScriptCode';
-import { FunctionData } from 'js-yaml-loader!@/*';
 import { IScriptCompiler } from './Compiler/IScriptCompiler';
 import { ScriptCompiler } from './Compiler/ScriptCompiler';
 import { ICategoryCollectionParseContext } from './ICategoryCollectionParseContext';
@@ -8,15 +8,17 @@ import { SyntaxFactory } from './Syntax/SyntaxFactory';
 import { ISyntaxFactory } from './Syntax/ISyntaxFactory';
 
 export class CategoryCollectionParseContext implements ICategoryCollectionParseContext {
-    public readonly compiler: IScriptCompiler;
-    public readonly syntax: ILanguageSyntax;
+  public readonly compiler: IScriptCompiler;
 
-    constructor(
-        functionsData: ReadonlyArray<FunctionData> | undefined,
-        scripting: IScriptingDefinition,
-        syntaxFactory: ISyntaxFactory = new SyntaxFactory()) {
-        if (!scripting) { throw new Error('undefined scripting'); }
-        this.syntax = syntaxFactory.create(scripting.language);
-        this.compiler = new ScriptCompiler(functionsData, this.syntax);
-    }
+  public readonly syntax: ILanguageSyntax;
+
+  constructor(
+    functionsData: ReadonlyArray<FunctionData> | undefined,
+    scripting: IScriptingDefinition,
+    syntaxFactory: ISyntaxFactory = new SyntaxFactory(),
+  ) {
+    if (!scripting) { throw new Error('undefined scripting'); }
+    this.syntax = syntaxFactory.create(scripting.language);
+    this.compiler = new ScriptCompiler(functionsData, this.syntax);
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Expression/Expression.ts

@@ -1,62 +1,63 @@
-import { ExpressionPosition } from './ExpressionPosition';
-import { IExpression } from './IExpression';
+import { FunctionParameterCollection } from '@/application/Parser/Script/Compiler/Function/Parameter/FunctionParameterCollection';
 import { IReadOnlyFunctionCallArgumentCollection } from '../../Function/Call/Argument/IFunctionCallArgumentCollection';
 import { IReadOnlyFunctionParameterCollection } from '../../Function/Parameter/IFunctionParameterCollection';
-import { FunctionParameterCollection } from '@/application/Parser/Script/Compiler/Function/Parameter/FunctionParameterCollection';
 import { FunctionCallArgumentCollection } from '../../Function/Call/Argument/FunctionCallArgumentCollection';
-import { IExpressionEvaluationContext } from './ExpressionEvaluationContext';
-import { ExpressionEvaluationContext } from '@/application/Parser/Script/Compiler/Expressions/Expression/ExpressionEvaluationContext';
+import { IExpression } from './IExpression';
+import { ExpressionPosition } from './ExpressionPosition';
+import { ExpressionEvaluationContext, IExpressionEvaluationContext } from './ExpressionEvaluationContext';
 
 export type ExpressionEvaluator = (context: IExpressionEvaluationContext) => string;
 export class Expression implements IExpression {
-    constructor(
-        public readonly position: ExpressionPosition,
-        public readonly evaluator: ExpressionEvaluator,
-        public readonly parameters: IReadOnlyFunctionParameterCollection = new FunctionParameterCollection()) {
-        if (!position) {
-            throw new Error('undefined position');
-        }
-        if (!evaluator) {
-            throw new Error('undefined evaluator');
-        }
+  constructor(
+    public readonly position: ExpressionPosition,
+    public readonly evaluator: ExpressionEvaluator,
+    public readonly parameters
+      : IReadOnlyFunctionParameterCollection = new FunctionParameterCollection(),
+  ) {
+    if (!position) {
+      throw new Error('undefined position');
     }
-    public evaluate(context: IExpressionEvaluationContext): string {
-        if (!context) {
-            throw new Error('undefined context');
-        }
-        validateThatAllRequiredParametersAreSatisfied(this.parameters, context.args);
-        const args = filterUnusedArguments(this.parameters, context.args);
-        context = new ExpressionEvaluationContext(args, context.pipelineCompiler);
-        return this.evaluator(context);
+    if (!evaluator) {
+      throw new Error('undefined evaluator');
     }
+  }
+
+  public evaluate(context: IExpressionEvaluationContext): string {
+    if (!context) {
+      throw new Error('undefined context');
+    }
+    validateThatAllRequiredParametersAreSatisfied(this.parameters, context.args);
+    const args = filterUnusedArguments(this.parameters, context.args);
+    const filteredContext = new ExpressionEvaluationContext(args, context.pipelineCompiler);
+    return this.evaluator(filteredContext);
+  }
 }
 
 function validateThatAllRequiredParametersAreSatisfied(
-    parameters: IReadOnlyFunctionParameterCollection,
-    args: IReadOnlyFunctionCallArgumentCollection,
+  parameters: IReadOnlyFunctionParameterCollection,
+  args: IReadOnlyFunctionCallArgumentCollection,
 ) {
-    const requiredParameterNames = parameters
-        .all
-        .filter((parameter) => !parameter.isOptional)
-        .map((parameter) => parameter.name);
-    const missingParameterNames = requiredParameterNames
-        .filter((parameterName) => !args.hasArgument(parameterName));
-    if (missingParameterNames.length) {
-        throw new Error(
-            `argument values are provided for required parameters: "${missingParameterNames.join('", "')}"`);
-    }
+  const requiredParameterNames = parameters
+    .all
+    .filter((parameter) => !parameter.isOptional)
+    .map((parameter) => parameter.name);
+  const missingParameterNames = requiredParameterNames
+    .filter((parameterName) => !args.hasArgument(parameterName));
+  if (missingParameterNames.length) {
+    throw new Error(
+      `argument values are provided for required parameters: "${missingParameterNames.join('", "')}"`,
+    );
+  }
 }
 
 function filterUnusedArguments(
-    parameters: IReadOnlyFunctionParameterCollection,
-    allFunctionArgs: IReadOnlyFunctionCallArgumentCollection): IReadOnlyFunctionCallArgumentCollection {
-    const specificCallArgs = new FunctionCallArgumentCollection();
-    for (const parameter of parameters.all) {
-        if (parameter.isOptional && !allFunctionArgs.hasArgument(parameter.name)) {
-            continue; // Optional parameter is not necessarily provided
-        }
-        const arg = allFunctionArgs.getArgument(parameter.name);
-        specificCallArgs.addArgument(arg);
-    }
-    return specificCallArgs;
+  parameters: IReadOnlyFunctionParameterCollection,
+  allFunctionArgs: IReadOnlyFunctionCallArgumentCollection,
+): IReadOnlyFunctionCallArgumentCollection {
+  const specificCallArgs = new FunctionCallArgumentCollection();
+  parameters.all
+    .filter((parameter) => allFunctionArgs.hasArgument(parameter.name))
+    .map((parameter) => allFunctionArgs.getArgument(parameter.name))
+    .forEach((argument) => specificCallArgs.addArgument(argument));
+  return specificCallArgs;
 }

src/application/Parser/Script/Compiler/Expressions/Expression/ExpressionEvaluationContext.ts

@@ -3,16 +3,17 @@ import { IPipelineCompiler } from '../Pipes/IPipelineCompiler';
 import { PipelineCompiler } from '../Pipes/PipelineCompiler';
 
 export interface IExpressionEvaluationContext {
-    readonly args: IReadOnlyFunctionCallArgumentCollection;
-    readonly pipelineCompiler: IPipelineCompiler;
+  readonly args: IReadOnlyFunctionCallArgumentCollection;
+  readonly pipelineCompiler: IPipelineCompiler;
 }
 
 export class ExpressionEvaluationContext implements IExpressionEvaluationContext {
-    constructor(
-        public readonly args: IReadOnlyFunctionCallArgumentCollection,
-        public readonly pipelineCompiler: IPipelineCompiler = new PipelineCompiler()) {
-        if (!args) {
-            throw new Error('undefined args, send empty collection instead');
-        }
+  constructor(
+    public readonly args: IReadOnlyFunctionCallArgumentCollection,
+    public readonly pipelineCompiler: IPipelineCompiler = new PipelineCompiler(),
+  ) {
+    if (!args) {
+      throw new Error('undefined args, send empty collection instead');
     }
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Expression/ExpressionPosition.ts

@@ -1,15 +1,16 @@
 export class ExpressionPosition {
-    constructor(
-        public readonly start: number,
-        public readonly end: number) {
-        if (start === end) {
-            throw new Error(`no length (start = end = ${start})`);
-        }
-        if (start > end) {
-            throw Error(`start (${start}) after end (${end})`);
-        }
-        if (start < 0) {
-            throw Error(`negative start position: ${start}`);
-        }
+  constructor(
+    public readonly start: number,
+    public readonly end: number,
+  ) {
+    if (start === end) {
+      throw new Error(`no length (start = end = ${start})`);
     }
+    if (start > end) {
+      throw Error(`start (${start}) after end (${end})`);
+    }
+    if (start < 0) {
+      throw Error(`negative start position: ${start}`);
+    }
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Expression/IExpression.ts

@@ -1,9 +1,9 @@
-import { ExpressionPosition } from './ExpressionPosition';
 import { IReadOnlyFunctionParameterCollection } from '../../Function/Parameter/IFunctionParameterCollection';
+import { ExpressionPosition } from './ExpressionPosition';
 import { IExpressionEvaluationContext } from './ExpressionEvaluationContext';
 
 export interface IExpression {
-    readonly position: ExpressionPosition;
-    readonly parameters: IReadOnlyFunctionParameterCollection;
-    evaluate(context: IExpressionEvaluationContext): string;
+  readonly position: ExpressionPosition;
+  readonly parameters: IReadOnlyFunctionParameterCollection;
+  evaluate(context: IExpressionEvaluationContext): string;
 }

src/application/Parser/Script/Compiler/Expressions/ExpressionsCompiler.ts

@@ -1,78 +1,85 @@
+import { IExpressionEvaluationContext, ExpressionEvaluationContext } from '@/application/Parser/Script/Compiler/Expressions/Expression/ExpressionEvaluationContext';
+import { IReadOnlyFunctionCallArgumentCollection } from '../Function/Call/Argument/IFunctionCallArgumentCollection';
 import { IExpressionsCompiler } from './IExpressionsCompiler';
 import { IExpression } from './Expression/IExpression';
 import { IExpressionParser } from './Parser/IExpressionParser';
 import { CompositeExpressionParser } from './Parser/CompositeExpressionParser';
-import { IReadOnlyFunctionCallArgumentCollection } from '../Function/Call/Argument/IFunctionCallArgumentCollection';
-import { ExpressionEvaluationContext } from './Expression/ExpressionEvaluationContext';
-import { IExpressionEvaluationContext } from '@/application/Parser/Script/Compiler/Expressions/Expression/ExpressionEvaluationContext';
 
 export class ExpressionsCompiler implements IExpressionsCompiler {
-    public constructor(
-        private readonly extractor: IExpressionParser = new CompositeExpressionParser()) { }
-    public compileExpressions(
-        code: string,
-        args: IReadOnlyFunctionCallArgumentCollection): string {
-        if (!args) {
-            throw new Error('undefined args, send empty collection instead');
-        }
-        const expressions = this.extractor.findExpressions(code);
-        ensureParamsUsedInCodeHasArgsProvided(expressions, args);
-        const context = new ExpressionEvaluationContext(args);
-        const compiledCode = compileExpressions(expressions, code, context);
-        return compiledCode;
+  public constructor(
+    private readonly extractor: IExpressionParser = new CompositeExpressionParser(),
+  ) { }
+
+  public compileExpressions(
+    code: string | undefined,
+    args: IReadOnlyFunctionCallArgumentCollection,
+  ): string {
+    if (!args) {
+      throw new Error('undefined args, send empty collection instead');
     }
+    if (!code) {
+      return code;
+    }
+    const expressions = this.extractor.findExpressions(code);
+    ensureParamsUsedInCodeHasArgsProvided(expressions, args);
+    const context = new ExpressionEvaluationContext(args);
+    const compiledCode = compileExpressions(expressions, code, context);
+    return compiledCode;
+  }
 }
 
 function compileExpressions(
-    expressions: readonly IExpression[],
-    code: string,
-    context: IExpressionEvaluationContext) {
-    let compiledCode = '';
-    const sortedExpressions = expressions
-        .slice() // copy the array to not mutate the parameter
-        .sort((a, b) => b.position.start - a.position.start);
-    let index = 0;
-    while (index !== code.length) {
-        const nextExpression = sortedExpressions.pop();
-        if (nextExpression) {
-            compiledCode += code.substring(index, nextExpression.position.start);
-            const expressionCode = nextExpression.evaluate(context);
-            compiledCode += expressionCode;
-            index = nextExpression.position.end;
-        } else {
-            compiledCode += code.substring(index, code.length);
-            break;
-        }
+  expressions: readonly IExpression[],
+  code: string,
+  context: IExpressionEvaluationContext,
+) {
+  let compiledCode = '';
+  const sortedExpressions = expressions
+    .slice() // copy the array to not mutate the parameter
+    .sort((a, b) => b.position.start - a.position.start);
+  let index = 0;
+  while (index !== code.length) {
+    const nextExpression = sortedExpressions.pop();
+    if (nextExpression) {
+      compiledCode += code.substring(index, nextExpression.position.start);
+      const expressionCode = nextExpression.evaluate(context);
+      compiledCode += expressionCode;
+      index = nextExpression.position.end;
+    } else {
+      compiledCode += code.substring(index, code.length);
+      break;
     }
-    return compiledCode;
+  }
+  return compiledCode;
 }
 
 function extractRequiredParameterNames(
-    expressions: readonly IExpression[]): string[] {
-    const usedParameterNames = expressions
-        .map((e) => e.parameters.all
-            .filter((p) => !p.isOptional)
-            .map((p) => p.name))
-        .filter((p) => p)
-        .flat();
-    const uniqueParameterNames = Array.from(new Set(usedParameterNames));
-    return uniqueParameterNames;
+  expressions: readonly IExpression[],
+): string[] {
+  return expressions
+    .map((e) => e.parameters.all
+      .filter((p) => !p.isOptional)
+      .map((p) => p.name))
+    .filter(Boolean) // Remove empty or undefined
+    .flat()
+    .filter((name, index, array) => array.indexOf(name) === index); // Remove duplicates
 }
 
 function ensureParamsUsedInCodeHasArgsProvided(
-    expressions: readonly IExpression[],
-    providedArgs: IReadOnlyFunctionCallArgumentCollection): void {
-    const usedParameterNames = extractRequiredParameterNames(expressions);
-    if (!usedParameterNames?.length) {
-        return;
-    }
-    const notProvidedParameters = usedParameterNames
-        .filter((parameterName) => !providedArgs.hasArgument(parameterName));
-    if (notProvidedParameters.length) {
-        throw new Error(`parameter value(s) not provided for: ${printList(notProvidedParameters)} but used in code`);
-    }
+  expressions: readonly IExpression[],
+  providedArgs: IReadOnlyFunctionCallArgumentCollection,
+): void {
+  const usedParameterNames = extractRequiredParameterNames(expressions);
+  if (!usedParameterNames?.length) {
+    return;
+  }
+  const notProvidedParameters = usedParameterNames
+    .filter((parameterName) => !providedArgs.hasArgument(parameterName));
+  if (notProvidedParameters.length) {
+    throw new Error(`parameter value(s) not provided for: ${printList(notProvidedParameters)} but used in code`);
+  }
 }
 
 function printList(list: readonly string[]): string {
-    return `"${list.join('", "')}"`;
+  return `"${list.join('", "')}"`;
 }

src/application/Parser/Script/Compiler/Expressions/IExpressionsCompiler.ts

@@ -1,7 +1,7 @@
 import { IReadOnlyFunctionCallArgumentCollection } from '../Function/Call/Argument/IFunctionCallArgumentCollection';
 
 export interface IExpressionsCompiler {
-    compileExpressions(
-        code: string,
-        args: IReadOnlyFunctionCallArgumentCollection): string;
+  compileExpressions(
+    code: string | undefined,
+    args: IReadOnlyFunctionCallArgumentCollection): string;
 }

src/application/Parser/Script/Compiler/Expressions/Parser/CompositeExpressionParser.ts

@@ -1,27 +1,23 @@
 import { IExpression } from '../Expression/IExpression';
-import { IExpressionParser } from './IExpressionParser';
 import { ParameterSubstitutionParser } from '../SyntaxParsers/ParameterSubstitutionParser';
 import { WithParser } from '../SyntaxParsers/WithParser';
+import { IExpressionParser } from './IExpressionParser';
 
 const Parsers = [
-    new ParameterSubstitutionParser(),
-    new WithParser(),
+  new ParameterSubstitutionParser(),
+  new WithParser(),
 ];
 
 export class CompositeExpressionParser implements IExpressionParser {
-    public constructor(private readonly leafs: readonly IExpressionParser[] = Parsers) {
-        if (leafs.some((leaf) => !leaf)) {
-            throw new Error('undefined leaf');
-        }
-    }
-    public findExpressions(code: string): IExpression[] {
-        const expressions = new Array<IExpression>();
-        for (const parser of this.leafs) {
-            const newExpressions = parser.findExpressions(code);
-            if (newExpressions && newExpressions.length) {
-                expressions.push(...newExpressions);
-            }
-        }
-        return expressions;
+  public constructor(private readonly leafs: readonly IExpressionParser[] = Parsers) {
+    if (leafs.some((leaf) => !leaf)) {
+      throw new Error('undefined leaf');
     }
+  }
+
+  public findExpressions(code: string): IExpression[] {
+    return this.leafs.flatMap(
+      (parser) => parser.findExpressions(code) || [],
+    );
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Parser/IExpressionParser.ts

@@ -1,5 +1,5 @@
 import { IExpression } from '../Expression/IExpression';
 
 export interface IExpressionParser {
-    findExpressions(code: string): IExpression[];
+  findExpressions(code: string): IExpression[];
 }

src/application/Parser/Script/Compiler/Expressions/Parser/Regex/ExpressionRegexBuilder.ts

@@ -1,59 +1,60 @@
 export class ExpressionRegexBuilder {
-    private readonly parts = new Array<string>();
+  private readonly parts = new Array<string>();
 
-    public expectCharacters(characters: string) {
-        return this.addRawRegex(
-            characters
-                .replaceAll('$', '\\$')
-                .replaceAll('.', '\\.'),
-        );
-    }
+  public expectCharacters(characters: string) {
+    return this.addRawRegex(
+      characters
+        .replaceAll('$', '\\$')
+        .replaceAll('.', '\\.'),
+    );
+  }
 
-    public expectOneOrMoreWhitespaces() {
-        return this
-            .addRawRegex('\\s+');
-    }
+  public expectOneOrMoreWhitespaces() {
+    return this
+      .addRawRegex('\\s+');
+  }
 
-    public matchPipeline() {
-        return this
-            .expectZeroOrMoreWhitespaces()
-            .addRawRegex('(\\|\\s*.+?)?');
-    }
+  public matchPipeline() {
+    return this
+      .expectZeroOrMoreWhitespaces()
+      .addRawRegex('(\\|\\s*.+?)?');
+  }
 
-    public matchUntilFirstWhitespace() {
-        return this
-            .addRawRegex('([^|\\s]+)');
-    }
+  public matchUntilFirstWhitespace() {
+    return this
+      .addRawRegex('([^|\\s]+)');
+  }
 
-    public matchAnythingExceptSurroundingWhitespaces() {
-        return this
-            .expectZeroOrMoreWhitespaces()
-            .addRawRegex('(.+?)')
-            .expectZeroOrMoreWhitespaces();
-    }
+  public matchAnythingExceptSurroundingWhitespaces() {
+    return this
+      .expectZeroOrMoreWhitespaces()
+      .addRawRegex('(.+?)')
+      .expectZeroOrMoreWhitespaces();
+  }
 
-    public expectExpressionStart() {
-        return this
-            .expectCharacters('{{')
-            .expectZeroOrMoreWhitespaces();
-    }
+  public expectExpressionStart() {
+    return this
+      .expectCharacters('{{')
+      .expectZeroOrMoreWhitespaces();
+  }
 
-    public expectExpressionEnd() {
-        return this
-            .expectZeroOrMoreWhitespaces()
-            .expectCharacters('}}');
-    }
+  public expectExpressionEnd() {
+    return this
+      .expectZeroOrMoreWhitespaces()
+      .expectCharacters('}}');
+  }
 
-    public buildRegExp(): RegExp {
-        return new RegExp(this.parts.join(''), 'g');
-    }
+  public buildRegExp(): RegExp {
+    return new RegExp(this.parts.join(''), 'g');
+  }
 
-    private expectZeroOrMoreWhitespaces() {
-        return this
-            .addRawRegex('\\s*');
-    }
-    private addRawRegex(regex: string) {
-        this.parts.push(regex);
-        return this;
-    }
+  private expectZeroOrMoreWhitespaces() {
+    return this
+      .addRawRegex('\\s*');
+  }
+
+  private addRawRegex(regex: string) {
+    this.parts.push(regex);
+    return this;
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Parser/Regex/RegexParser.ts

@@ -6,43 +6,54 @@ import { IFunctionParameter } from '../../../Function/Parameter/IFunctionParamet
 import { FunctionParameterCollection } from '../../../Function/Parameter/FunctionParameterCollection';
 
 export abstract class RegexParser implements IExpressionParser {
-    protected abstract readonly regex: RegExp;
+  protected abstract readonly regex: RegExp;
 
-    public findExpressions(code: string): IExpression[] {
-        return Array.from(this.findRegexExpressions(code));
+  public findExpressions(code: string): IExpression[] {
+    return Array.from(this.findRegexExpressions(code));
+  }
+
+  protected abstract buildExpression(match: RegExpMatchArray): IPrimitiveExpression;
+
+  private* findRegexExpressions(code: string): Iterable<IExpression> {
+    if (!code) {
+      throw new Error('undefined code');
     }
-
-    protected abstract buildExpression(match: RegExpMatchArray): IPrimitiveExpression;
-
-    private* findRegexExpressions(code: string): Iterable<IExpression> {
-        const matches = Array.from(code.matchAll(this.regex));
-        for (const match of matches) {
-            const startPos = match.index;
-            const endPos = startPos + match[0].length;
-            let position: ExpressionPosition;
-            try {
-                position = new ExpressionPosition(startPos, endPos);
-            } catch (error) {
-                throw new Error(`[${this.constructor.name}] invalid script position: ${error.message}\nRegex ${this.regex}\nCode: ${code}`);
-            }
-            const primitiveExpression = this.buildExpression(match);
-            const parameters = getParameters(primitiveExpression);
-            const expression = new Expression(position, primitiveExpression.evaluator, parameters);
-            yield expression;
-        }
+    const matches = code.matchAll(this.regex);
+    for (const match of matches) {
+      const primitiveExpression = this.buildExpression(match);
+      const position = this.doOrRethrow(() => createPosition(match), 'invalid script position', code);
+      const parameters = createParameters(primitiveExpression);
+      const expression = new Expression(position, primitiveExpression.evaluator, parameters);
+      yield expression;
     }
+  }
+
+  private doOrRethrow<T>(action: () => T, errorText: string, code: string): T {
+    try {
+      return action();
+    } catch (error) {
+      throw new Error(`[${this.constructor.name}] ${errorText}: ${error.message}\nRegex: ${this.regex}\nCode: ${code}`);
+    }
+  }
+}
+
+function createPosition(match: RegExpMatchArray): ExpressionPosition {
+  const startPos = match.index;
+  const endPos = startPos + match[0].length;
+  return new ExpressionPosition(startPos, endPos);
+}
+
+function createParameters(
+  expression: IPrimitiveExpression,
+): FunctionParameterCollection {
+  return (expression.parameters || [])
+    .reduce((parameters, parameter) => {
+      parameters.addParameter(parameter);
+      return parameters;
+    }, new FunctionParameterCollection());
 }
 
 export interface IPrimitiveExpression {
-    evaluator: ExpressionEvaluator;
-    parameters?: readonly IFunctionParameter[];
-}
-
-function getParameters(
-    expression: IPrimitiveExpression): FunctionParameterCollection {
-    const parameters  = new FunctionParameterCollection();
-    for (const parameter of expression.parameters || []) {
-        parameters.addParameter(parameter);
-    }
-    return parameters;
+  evaluator: ExpressionEvaluator;
+  parameters?: readonly IFunctionParameter[];
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/IPipe.ts

@@ -1,4 +1,4 @@
 export interface IPipe {
-    readonly name: string;
-    apply(input: string): string;
+  readonly name: string;
+  apply(input: string): string;
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/IPipelineCompiler.ts

@@ -1,3 +1,3 @@
 export interface IPipelineCompiler {
-    compile(value: string, pipeline: string): string;
+  compile(value: string, pipeline: string): string;
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/PipeDefinitions/EscapeDoubleQuotes.ts

@@ -1,27 +1,30 @@
 import { IPipe } from '../IPipe';
 
 export class EscapeDoubleQuotes implements IPipe {
-    public readonly name: string = 'escapeDoubleQuotes';
-    public apply(raw: string): string {
-        return raw?.replaceAll('"', '"^""');
-        /*
-            "^"" is the most robust and stable choice.
-            Other options:
-                ""
-                    Breaks, because it is fundamentally unsupported
-                """"
-                    Does not work with consecutive double quotes.
-                    E.g. PowerShell -Command "$name='aq'; Write-Host """"Disabled `""""$name`"""""""";"
-                    Works when using: PowerShell -Command "$name='aq'; Write-Host "^""Disabled `"^""$name`"^"" "^"";"
-                \"
-                    May break as they are interpreted by cmd.exe as metacharacters breaking the command
-                    E.g. PowerShell -Command "Write-Host 'Hello \"w&orld\"'" does not work due to unescaped "&"
-                    Works when using: PowerShell -Command "Write-Host 'Hello "^""w&orld"^""'"
-                \""
-                    Normalizes interior whitespace
-                    E.g. PowerShell -Command "\""a&  c\"".length", outputs 4 and discards one of two whitespaces
-                    Works when using "^"": PowerShell -Command ""^""a&  c"^"".length"
-            A good explanation: https://stackoverflow.com/a/31413730
-        */
-    }
+  public readonly name: string = 'escapeDoubleQuotes';
+
+  public apply(raw: string): string {
+    return raw?.replaceAll('"', '"^""');
+    /* eslint-disable max-len */
+    /*
+      "^"" is the most robust and stable choice.
+      Other options:
+        ""
+          Breaks, because it is fundamentally unsupported
+        """"
+          Does not work with consecutive double quotes.
+          E.g. `PowerShell -Command "$name='aq'; Write-Host """"Disabled `""""$name`"""""""";"`
+          Works when using: `PowerShell -Command "$name='aq'; Write-Host "^""Disabled `"^""$name`"^"" "^"";"`
+        \"
+          May break as they are interpreted by cmd.exe as metacharacters breaking the command
+          E.g. `PowerShell -Command "Write-Host 'Hello \"w&orld\"'"` does not work due to unescaped "&"
+          Works when using: `PowerShell -Command "Write-Host 'Hello "^""w&orld"^""'"`
+        \""
+          Normalizes interior whitespace
+          E.g. `PowerShell -Command "\""a&  c\"".length"`, outputs 4 and discards one of two whitespaces
+          Works when using "^"": `PowerShell -Command ""^""a&  c"^"".length"`
+      A good explanation: https://stackoverflow.com/a/31413730
+    */
+    /* eslint-enable max-len */
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/PipeDefinitions/InlinePowerShell.ts

@@ -1,155 +1,166 @@
 import { IPipe } from '../IPipe';
 
 export class InlinePowerShell implements IPipe {
-    public readonly name: string = 'inlinePowerShell';
-    public apply(code: string): string {
-        if (!code || !hasLines(code)) {
-            return code;
-        }
-        code = inlineComments(code);
-        code = mergeLinesWithBacktick(code);
-        code = mergeHereStrings(code);
-        const lines = getLines(code)
-            .map((line) => line.trim())
-            .filter((line) => line.length > 0);
-        return lines
-            .join('; ');
+  public readonly name: string = 'inlinePowerShell';
+
+  public apply(code: string): string {
+    if (!code || !hasLines(code)) {
+      return code;
     }
+    const processor = new Array<(data: string) => string>(...[ // for broken ESlint "indent"
+      inlineComments,
+      mergeLinesWithBacktick,
+      mergeHereStrings,
+      mergeNewLines,
+    ]).reduce((a, b) => (data) => b(a(data)));
+    const newCode = processor(code);
+    return newCode;
+  }
 }
 
 function hasLines(text: string) {
-    return text.includes('\n') || text.includes('\r');
+  return text.includes('\n') || text.includes('\r');
 }
 
 /*
-    Line comments using "#" are replaced with inline comment syntax <# comment.. #>
-    Otherwise single # comments out rest of the code
+  Line comments using "#" are replaced with inline comment syntax <# comment.. #>
+  Otherwise single # comments out rest of the code
 */
 function inlineComments(code: string): string {
-    const makeInlineComment = (comment: string) => {
-        const value = comment?.trim();
-        if (!value) {
-            return '<##>';
-        }
-        return `<# ${value} #>`;
-    };
-    return code.replaceAll(/<#.*?#>|#(.*)/g, (match, captureComment) => {
-        if (captureComment === undefined) {
+  const makeInlineComment = (comment: string) => {
+    const value = comment?.trim();
+    if (!value) {
+      return '<##>';
+    }
+    return `<# ${value} #>`;
+  };
+  return code.replaceAll(/<#.*?#>|#(.*)/g, (match, captureComment) => {
+    if (captureComment === undefined) {
+      return match;
+    }
+    return makeInlineComment(captureComment);
+  });
+  /*
+    Other alternatives considered:
+    --------------------------
+    /#(?<!<#)(?![<>])(.*)$/gm
+    -------------------------
+      ✅ Simple, yet matches and captures only what's necessary
+      ❌ Fails to match some cases
+        ❌ `Write-Host "hi" # Comment ending line inline comment but not one #>`
+        ❌ `Write-Host "hi" <#Comment starting like inline comment start but not one`
+        ❌ `Write-Host "hi" #>Comment starting like inline comment end but not one`
+      ❌ Uses lookbehind
+        Safari does not yet support lookbehind and syntax, leading application to not
+        load and throw "Invalid regular expression: invalid group specifier name"
+        https://caniuse.com/js-regexp-lookbehind
+      ⏩ Usage
+        return code.replaceAll(/#(?<!<#)(?![<>])(.*)$/gm, (match, captureComment) => {
+          return makeInlineComment(captureComment)
+        });
+    ----------------
+    /<#.*?#>|#(.*)/g
+    ----------------
+      ✅ Simple yet affective
+      ❌ Matches all comments, but only captures dash comments
+      ❌ Fails to match some cases
+        ❌ `Write-Host "hi" # Comment ending line inline comment but not one #>`
+        ❌ `Write-Host "hi" <#Comment starting like inline comment start but not one`
+      ⏩ Usage
+        return code.replaceAll(/<#.*?#>|#(.*)/g, (match, captureComment) => {
+          if (captureComment === undefined) {
             return match;
-        }
-        return makeInlineComment(captureComment);
-    });
-    /*
-        Other alternatives considered:
-            --------------------------
-            /#(?<!<#)(?![<>])(.*)$/gm
-            -------------------------
-                ✅ Simple, yet matches and captures only what's necessary
-                ❌ Fails to match some cases
-                    ❌ `Write-Host "hi" # Comment ending line inline comment but not one #>`
-                    ❌ `Write-Host "hi" <#Comment starting like inline comment start but not one`
-                    ❌ `Write-Host "hi" #>Comment starting like inline comment end but not one`
-                ❌ Uses lookbehind
-                    Safari does not yet support lookbehind and syntax, leading application to not
-                    load and throw "Invalid regular expression: invalid group specifier name"
-                    https://caniuse.com/js-regexp-lookbehind
-                ⏩ Usage
-                    return code.replaceAll(/#(?<!<#)(?![<>])(.*)$/gm, (match, captureComment) => {
-                        return makeInlineComment(captureComment)
-                    });
-            ----------------
-            /<#.*?#>|#(.*)/g
-            ----------------
-                ✅ Simple yet affective
-                ❌ Matches all comments, but only captures dash comments
-                ❌ Fails to match some cases
-                    ❌ `Write-Host "hi" # Comment ending line inline comment but not one #>`
-                    ❌ `Write-Host "hi" <#Comment starting like inline comment start but not one`
-                ⏩ Usage
-                    return code.replaceAll(/<#.*?#>|#(.*)/g, (match, captureComment) => {
-                        if (captureComment === undefined) {
-                            return match;
-                        }
-                        return makeInlineComment(captureComment);
-                    });
-            ------------------------------------
-            /(^(?:<#.*?#>|[^#])*)(?:(#)(.*))?/gm
-            ------------------------------------
-                ✅ Covers all cases
-                ❌ Matches every line, three capture groups are used to build result
-                ⏩ Usage
-                    return code.replaceAll(/(^(?:<#.*?#>|[^#])*)(?:(#)(.*))?/gm,
-                        (match, captureLeft, captureDash, captureComment) => {
-                            if (!captureDash) {
-                                return match;
-                            }
-                            return captureLeft + makeInlineComment(captureComment);
-                        });
+          }
+          return makeInlineComment(captureComment);
+        });
+    ------------------------------------
+    /(^(?:<#.*?#>|[^#])*)(?:(#)(.*))?/gm
+    ------------------------------------
+      ✅ Covers all cases
+      ❌ Matches every line, three capture groups are used to build result
+      ⏩ Usage
+        return code.replaceAll(/(^(?:<#.*?#>|[^#])*)(?:(#)(.*))?/gm,
+          (match, captureLeft, captureDash, captureComment) => {
+            if (!captureDash) {
+              return match;
+            }
+            return captureLeft + makeInlineComment(captureComment);
+          });
     */
 }
 
-function getLines(code: string): string [] {
-    return (code?.split(/\r\n|\r|\n/) || []);
+function getLines(code: string): string[] {
+  return (code?.split(/\r\n|\r|\n/) || []);
 }
 
 /*
-    Merges inline here-strings to a single lined string with Windows line terminator (\r\n)
-    https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules#here-strings
+  Merges inline here-strings to a single lined string with Windows line terminator (\r\n)
+  https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules#here-strings
 */
 function mergeHereStrings(code: string) {
-    const regex = /@(['"])\s*(?:\r\n|\r|\n)((.|\n|\r)+?)(\r\n|\r|\n)\1@/g;
-    return code.replaceAll(regex, (_$, quotes, scope) => {
-        const newString = getHereStringHandler(quotes);
-        const escaped = scope.replaceAll(quotes, newString.escapedQuotes);
-        const lines = getLines(escaped);
-        const inlined = lines.join(newString.separator);
-        const quoted = `${newString.quotesAround}${inlined}${newString.quotesAround}`;
-        return quoted;
-    });
+  const regex = /@(['"])\s*(?:\r\n|\r|\n)((.|\n|\r)+?)(\r\n|\r|\n)\1@/g;
+  return code.replaceAll(regex, (_$, quotes, scope) => {
+    const newString = getHereStringHandler(quotes);
+    const escaped = scope.replaceAll(quotes, newString.escapedQuotes);
+    const lines = getLines(escaped);
+    const inlined = lines.join(newString.separator);
+    const quoted = `${newString.quotesAround}${inlined}${newString.quotesAround}`;
+    return quoted;
+  });
 }
 interface IInlinedHereString {
-    readonly quotesAround: string;
-    readonly escapedQuotes: string;
-    readonly separator: string;
+  readonly quotesAround: string;
+  readonly escapedQuotes: string;
+  readonly separator: string;
 }
-// We handle @' and @" differently so single quotes are interpreted literally and doubles are expandable
 function getHereStringHandler(quotes: string): IInlinedHereString {
-    const expandableNewLine = '`r`n';
-    switch (quotes) {
-        case '\'':
-            return {
-                quotesAround: '\'',
-                escapedQuotes: '\'\'',
-                separator: `\'+"${expandableNewLine}"+\'`,
-            };
-        case '"':
-            return {
-                quotesAround: '"',
-                escapedQuotes: '`"',
-                separator: expandableNewLine,
-            };
-        default:
-            throw new Error(`expected quotes: ${quotes}`);
-    }
+  /*
+    We handle @' and @" differently.
+    Single quotes are interpreted literally and doubles are expandable.
+  */
+  const expandableNewLine = '`r`n';
+  switch (quotes) {
+    case '\'':
+      return {
+        quotesAround: '\'',
+        escapedQuotes: '\'\'',
+        separator: `'+"${expandableNewLine}"+'`,
+      };
+    case '"':
+      return {
+        quotesAround: '"',
+        escapedQuotes: '`"',
+        separator: expandableNewLine,
+      };
+    default:
+      throw new Error(`expected quotes: ${quotes}`);
+  }
 }
 
 /*
-    Input ->
-        Get-Service * `
-            Sort-Object StartType `
-            Format-Table Name, ServiceType, Status -AutoSize
-    Output ->
-        Get-Service * | Sort-Object StartType | Format-Table -AutoSize
+  Input ->
+      Get-Service * `
+          Sort-Object StartType `
+          Format-Table Name, ServiceType, Status -AutoSize
+  Output ->
+      Get-Service * | Sort-Object StartType | Format-Table -AutoSize
 */
 function mergeLinesWithBacktick(code: string) {
-    /*
-        The regex actually wraps any whitespace character after backtick and before newline
-        However, this is not always the case for PowerShell.
-        I see two behaviors:
-            1. If inside string, it's accepted (inside " or ')
-            2. If part of a command, PowerShell throws "An empty pipe element is not allowed"
-        However we don't need to be so robust and handle this complexity (yet), so for easier regex
-        we wrap it anyway
-    */
-    return code.replaceAll(/ +`\s*(?:\r\n|\r|\n)\s*/g, ' ');
+  /*
+    The regex actually wraps any whitespace character after backtick and before newline
+    However, this is not always the case for PowerShell.
+    I see two behaviors:
+        1. If inside string, it's accepted (inside " or ')
+        2. If part of a command, PowerShell throws "An empty pipe element is not allowed"
+    However we don't need to be so robust and handle this complexity (yet), so for easier regex
+    we wrap it anyway
+  */
+  return code.replaceAll(/ +`\s*(?:\r\n|\r|\n)\s*/g, ' ');
+}
+
+function mergeNewLines(code: string) {
+  return getLines(code)
+    .map((line) => line.trim())
+    .filter((line) => line.length > 0)
+    .join('; ');
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/PipeFactory.ts

@@ -3,45 +3,48 @@ import { InlinePowerShell } from './PipeDefinitions/InlinePowerShell';
 import { EscapeDoubleQuotes } from './PipeDefinitions/EscapeDoubleQuotes';
 
 const RegisteredPipes = [
-    new EscapeDoubleQuotes(),
-    new InlinePowerShell(),
+  new EscapeDoubleQuotes(),
+  new InlinePowerShell(),
 ];
 
 export interface IPipeFactory {
-    get(pipeName: string): IPipe;
+  get(pipeName: string): IPipe;
 }
 
 export class PipeFactory implements IPipeFactory {
-    private readonly pipes = new Map<string, IPipe>();
-    constructor(pipes: readonly IPipe[] = RegisteredPipes) {
-        if (pipes.some((pipe) => !pipe)) {
-            throw new Error('undefined pipe in list');
-        }
-        for (const pipe of pipes) {
-            this.registerPipe(pipe);
-        }
+  private readonly pipes = new Map<string, IPipe>();
+
+  constructor(pipes: readonly IPipe[] = RegisteredPipes) {
+    if (pipes.some((pipe) => !pipe)) {
+      throw new Error('undefined pipe in list');
     }
-    public get(pipeName: string): IPipe {
-        validatePipeName(pipeName);
-        if (!this.pipes.has(pipeName)) {
-            throw new Error(`Unknown pipe: "${pipeName}"`);
-        }
-        return this.pipes.get(pipeName);
+    for (const pipe of pipes) {
+      this.registerPipe(pipe);
     }
-    private registerPipe(pipe: IPipe): void {
-        validatePipeName(pipe.name);
-        if (this.pipes.has(pipe.name)) {
-            throw new Error(`Pipe name must be unique: "${pipe.name}"`);
-        }
-        this.pipes.set(pipe.name, pipe);
+  }
+
+  public get(pipeName: string): IPipe {
+    validatePipeName(pipeName);
+    if (!this.pipes.has(pipeName)) {
+      throw new Error(`Unknown pipe: "${pipeName}"`);
     }
+    return this.pipes.get(pipeName);
+  }
+
+  private registerPipe(pipe: IPipe): void {
+    validatePipeName(pipe.name);
+    if (this.pipes.has(pipe.name)) {
+      throw new Error(`Pipe name must be unique: "${pipe.name}"`);
+    }
+    this.pipes.set(pipe.name, pipe);
+  }
 }
 
 function validatePipeName(name: string) {
-    if (!name) {
-        throw new Error('empty pipe name');
-    }
-    if (!/^[a-z][A-Za-z]*$/.test(name)) {
-        throw new Error(`Pipe name should be camelCase: "${name}"`);
-    }
+  if (!name) {
+    throw new Error('empty pipe name');
+  }
+  if (!/^[a-z][A-Za-z]*$/.test(name)) {
+    throw new Error(`Pipe name should be camelCase: "${name}"`);
+  }
 }

src/application/Parser/Script/Compiler/Expressions/Pipes/PipelineCompiler.ts

@@ -2,30 +2,30 @@ import { IPipeFactory, PipeFactory } from './PipeFactory';
 import { IPipelineCompiler } from './IPipelineCompiler';
 
 export class PipelineCompiler implements IPipelineCompiler {
-    constructor(private readonly factory: IPipeFactory = new PipeFactory()) { }
-    public compile(value: string, pipeline: string): string {
-        ensureValidArguments(value, pipeline);
-        const pipeNames = extractPipeNames(pipeline);
-        const pipes = pipeNames.map((pipeName) => this.factory.get(pipeName));
-        for (const pipe of pipes) {
-            value = pipe.apply(value);
-        }
-        return value;
-    }
+  constructor(private readonly factory: IPipeFactory = new PipeFactory()) { }
+
+  public compile(value: string, pipeline: string): string {
+    ensureValidArguments(value, pipeline);
+    const pipeNames = extractPipeNames(pipeline);
+    const pipes = pipeNames.map((pipeName) => this.factory.get(pipeName));
+    return pipes.reduce((previousValue, pipe) => {
+      return pipe.apply(previousValue);
+    }, value);
+  }
 }
 
 function extractPipeNames(pipeline: string): string[] {
-    return pipeline
-        .trim()
-        .split('|')
-        .slice(1)
-        .map((p) => p.trim());
+  return pipeline
+    .trim()
+    .split('|')
+    .slice(1)
+    .map((p) => p.trim());
 }
 
 function ensureValidArguments(value: string, pipeline: string) {
-    if (!value) { throw new Error('undefined value'); }
-    if (!pipeline) { throw new Error('undefined pipeline'); }
-    if (!pipeline.trimStart().startsWith('|')) {
-        throw new Error('pipeline does not start with pipe');
-    }
+  if (!value) { throw new Error('undefined value'); }
+  if (!pipeline) { throw new Error('undefined pipeline'); }
+  if (!pipeline.trimStart().startsWith('|')) {
+    throw new Error('pipeline does not start with pipe');
+  }
 }

src/application/Parser/Script/Compiler/Expressions/SyntaxParsers/ParameterSubstitutionParser.ts

@@ -1,28 +1,28 @@
-import { RegexParser, IPrimitiveExpression } from '../Parser/Regex/RegexParser';
 import { FunctionParameter } from '@/application/Parser/Script/Compiler/Function/Parameter/FunctionParameter';
+import { RegexParser, IPrimitiveExpression } from '../Parser/Regex/RegexParser';
 import { ExpressionRegexBuilder } from '../Parser/Regex/ExpressionRegexBuilder';
 
 export class ParameterSubstitutionParser extends RegexParser {
-    protected readonly regex = new ExpressionRegexBuilder()
-        .expectExpressionStart()
-        .expectCharacters('$')
-        .matchUntilFirstWhitespace()    // First match: Parameter name
-        .matchPipeline()                // Second match: Pipeline
-        .expectExpressionEnd()
-        .buildRegExp();
+  protected readonly regex = new ExpressionRegexBuilder()
+    .expectExpressionStart()
+    .expectCharacters('$')
+    .matchUntilFirstWhitespace() // First match: Parameter name
+    .matchPipeline() // Second match: Pipeline
+    .expectExpressionEnd()
+    .buildRegExp();
 
-    protected buildExpression(match: RegExpMatchArray): IPrimitiveExpression {
-        const parameterName = match[1];
-        const pipeline = match[2];
-        return {
-            parameters: [ new FunctionParameter(parameterName, false) ],
-            evaluator: (context) => {
-                const argumentValue = context.args.getArgument(parameterName).argumentValue;
-                if (!pipeline) {
-                    return argumentValue;
-                }
-                return context.pipelineCompiler.compile(argumentValue, pipeline);
-            },
-        };
-    }
+  protected buildExpression(match: RegExpMatchArray): IPrimitiveExpression {
+    const parameterName = match[1];
+    const pipeline = match[2];
+    return {
+      parameters: [new FunctionParameter(parameterName, false)],
+      evaluator: (context) => {
+        const { argumentValue } = context.args.getArgument(parameterName);
+        if (!pipeline) {
+          return argumentValue;
+        }
+        return context.pipelineCompiler.compile(argumentValue, pipeline);
+      },
+    };
+  }
 }

src/application/Parser/Script/Compiler/Expressions/SyntaxParsers/WithParser.ts

@@ -1,58 +1,59 @@
-import { RegexParser, IPrimitiveExpression } from '../Parser/Regex/RegexParser';
 import { FunctionParameter } from '@/application/Parser/Script/Compiler/Function/Parameter/FunctionParameter';
+import { RegexParser, IPrimitiveExpression } from '../Parser/Regex/RegexParser';
 import { ExpressionRegexBuilder } from '../Parser/Regex/ExpressionRegexBuilder';
 
 export class WithParser extends RegexParser {
-    protected readonly regex = new ExpressionRegexBuilder()
-        // {{ with $parameterName }}
-        .expectExpressionStart()
-        .expectCharacters('with')
-        .expectOneOrMoreWhitespaces()
-        .expectCharacters('$')
-        .matchUntilFirstWhitespace()                    // First match: parameter name
-        .expectExpressionEnd()
-        // ...
-        .matchAnythingExceptSurroundingWhitespaces()    // Second match: Scope text
-        // {{ end }}
-        .expectExpressionStart()
-        .expectCharacters('end')
-        .expectExpressionEnd()
-        .buildRegExp();
-
-    protected buildExpression(match: RegExpMatchArray): IPrimitiveExpression {
-        const parameterName = match[1];
-        const scopeText = match[2];
-        return {
-            parameters: [ new FunctionParameter(parameterName, true) ],
-            evaluator: (context) => {
-                const argumentValue = context.args.hasArgument(parameterName) ?
-                    context.args.getArgument(parameterName).argumentValue
-                    : undefined;
-                if (!argumentValue) {
-                    return '';
-                }
-                return replaceEachScopeSubstitution(scopeText, (pipeline) => {
-                    if (!pipeline) {
-                        return argumentValue;
-                    }
-                    return context.pipelineCompiler.compile(argumentValue, pipeline);
-                });
-            },
-        };
-    }
-}
-
-const ScopeSubstitutionRegEx = new ExpressionRegexBuilder()
-    // {{ . | pipeName }}
+  protected readonly regex = new ExpressionRegexBuilder()
+  // {{ with $parameterName }}
     .expectExpressionStart()
-    .expectCharacters('.')
-    .matchPipeline()    // First match: pipeline
+    .expectCharacters('with')
+    .expectOneOrMoreWhitespaces()
+    .expectCharacters('$')
+    .matchUntilFirstWhitespace() // First match: parameter name
+    .expectExpressionEnd()
+  // ...
+    .matchAnythingExceptSurroundingWhitespaces() // Second match: Scope text
+  // {{ end }}
+    .expectExpressionStart()
+    .expectCharacters('end')
     .expectExpressionEnd()
     .buildRegExp();
 
-function replaceEachScopeSubstitution(scopeText: string, replacer: (pipeline: string) => string) {
-    // Not using /{{\s*.\s*(?:(\|\s*[^{}]*?)\s*)?}}/g for not matching brackets, but let pipeline compiler fail on those
-    return scopeText.replaceAll(ScopeSubstitutionRegEx, (_$, match1 ) => {
-        return replacer(match1);
-    });
+  protected buildExpression(match: RegExpMatchArray): IPrimitiveExpression {
+    const parameterName = match[1];
+    const scopeText = match[2];
+    return {
+      parameters: [new FunctionParameter(parameterName, true)],
+      evaluator: (context) => {
+        const argumentValue = context.args.hasArgument(parameterName)
+          ? context.args.getArgument(parameterName).argumentValue
+          : undefined;
+        if (!argumentValue) {
+          return '';
+        }
+        return replaceEachScopeSubstitution(scopeText, (pipeline) => {
+          if (!pipeline) {
+            return argumentValue;
+          }
+          return context.pipelineCompiler.compile(argumentValue, pipeline);
+        });
+      },
+    };
+  }
+}
+
+const ScopeSubstitutionRegEx = new ExpressionRegexBuilder()
+// {{ . | pipeName }}
+  .expectExpressionStart()
+  .expectCharacters('.')
+  .matchPipeline() // First match: pipeline
+  .expectExpressionEnd()
+  .buildRegExp();
+
+function replaceEachScopeSubstitution(scopeText: string, replacer: (pipeline: string) => string) {
+  // Not using /{{\s*.\s*(?:(\|\s*[^{}]*?)\s*)?}}/g for not matching brackets,
+  // but instead letting the pipeline compiler to fail on those.
+  return scopeText.replaceAll(ScopeSubstitutionRegEx, (_$, match1) => {
+    return replacer(match1);
+  });
 }

src/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgument.ts

@@ -1,13 +1,14 @@
-import { IFunctionCallArgument } from './IFunctionCallArgument';
 import { ensureValidParameterName } from '../../Shared/ParameterNameValidator';
+import { IFunctionCallArgument } from './IFunctionCallArgument';
 
 export class FunctionCallArgument implements IFunctionCallArgument {
-    constructor(
-        public readonly parameterName: string,
-        public readonly argumentValue: string) {
-        ensureValidParameterName(parameterName);
-        if (!argumentValue) {
-            throw new Error(`undefined argument value for "${parameterName}"`);
-        }
+  constructor(
+    public readonly parameterName: string,
+    public readonly argumentValue: string,
+  ) {
+    ensureValidParameterName(parameterName);
+    if (!argumentValue) {
+      throw new Error(`undefined argument value for "${parameterName}"`);
     }
+  }
 }

src/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgumentCollection.ts

@@ -2,33 +2,37 @@ import { IFunctionCallArgument } from './IFunctionCallArgument';
 import { IFunctionCallArgumentCollection } from './IFunctionCallArgumentCollection';
 
 export class FunctionCallArgumentCollection implements IFunctionCallArgumentCollection {
-    private readonly arguments = new Map<string, IFunctionCallArgument>();
-    public addArgument(argument: IFunctionCallArgument): void {
-        if (!argument) {
-            throw new Error('undefined argument');
-        }
-        if (this.hasArgument(argument.parameterName)) {
-            throw new Error(`argument value for parameter ${argument.parameterName} is already provided`);
-        }
-        this.arguments.set(argument.parameterName, argument);
+  private readonly arguments = new Map<string, IFunctionCallArgument>();
+
+  public addArgument(argument: IFunctionCallArgument): void {
+    if (!argument) {
+      throw new Error('undefined argument');
     }
-    public getAllParameterNames(): string[] {
-        return Array.from(this.arguments.keys());
+    if (this.hasArgument(argument.parameterName)) {
+      throw new Error(`argument value for parameter ${argument.parameterName} is already provided`);
     }
-    public hasArgument(parameterName: string): boolean {
-        if (!parameterName) {
-            throw new Error('undefined parameter name');
-        }
-        return this.arguments.has(parameterName);
+    this.arguments.set(argument.parameterName, argument);
+  }
+
+  public getAllParameterNames(): string[] {
+    return Array.from(this.arguments.keys());
+  }
+
+  public hasArgument(parameterName: string): boolean {
+    if (!parameterName) {
+      throw new Error('undefined parameter name');
     }
-    public getArgument(parameterName: string): IFunctionCallArgument {
-        if (!parameterName) {
-            throw new Error('undefined parameter name');
-        }
-        const arg = this.arguments.get(parameterName);
-        if (!arg) {
-            throw new Error(`parameter does not exist: ${parameterName}`);
-        }
-        return arg;
+    return this.arguments.has(parameterName);
+  }
+
+  public getArgument(parameterName: string): IFunctionCallArgument {
+    if (!parameterName) {
+      throw new Error('undefined parameter name');
     }
+    const arg = this.arguments.get(parameterName);
+    if (!arg) {
+      throw new Error(`parameter does not exist: ${parameterName}`);
+    }
+    return arg;
+  }
 }

src/application/Parser/Script/Compiler/Function/Call/Argument/IFunctionCallArgument.ts

@@ -1,4 +1,4 @@
 export interface IFunctionCallArgument {
-    readonly parameterName: string;
-    readonly argumentValue: string;
+  readonly parameterName: string;
+  readonly argumentValue: string;
 }

src/application/Parser/Script/Compiler/Function/Call/Argument/IFunctionCallArgumentCollection.ts

@@ -1,11 +1,11 @@
 import { IFunctionCallArgument } from './IFunctionCallArgument';
 
 export interface IReadOnlyFunctionCallArgumentCollection {
-    getArgument(parameterName: string): IFunctionCallArgument;
-    getAllParameterNames(): string[];
-    hasArgument(parameterName: string): boolean;
+  getArgument(parameterName: string): IFunctionCallArgument;
+  getAllParameterNames(): string[];
+  hasArgument(parameterName: string): boolean;
 }
 
 export interface IFunctionCallArgumentCollection extends IReadOnlyFunctionCallArgumentCollection {
-    addArgument(argument: IFunctionCallArgument): void;
+  addArgument(argument: IFunctionCallArgument): void;
 }

src/application/Parser/Script/Compiler/Function/Call/Compiler/FunctionCallCompiler.ts

@@ -1,139 +1,149 @@
 import { IReadOnlyFunctionCallArgumentCollection } from '@/application/Parser/Script/Compiler/Function/Call/Argument/IFunctionCallArgumentCollection';
-import { ICompiledCode } from './ICompiledCode';
+import { IFunctionCall } from '@/application/Parser/Script/Compiler/Function/Call/IFunctionCall';
+import { FunctionCallArgument } from '@/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgument';
 import { ISharedFunctionCollection } from '../../ISharedFunctionCollection';
-import { IFunctionCallCompiler } from './IFunctionCallCompiler';
 import { IExpressionsCompiler } from '../../../Expressions/IExpressionsCompiler';
 import { ExpressionsCompiler } from '../../../Expressions/ExpressionsCompiler';
 import { ISharedFunction, IFunctionCode } from '../../ISharedFunction';
-import { IFunctionCall } from '@/application/Parser/Script/Compiler/Function/Call/IFunctionCall';
 import { FunctionCall } from '../FunctionCall';
 import { FunctionCallArgumentCollection } from '../Argument/FunctionCallArgumentCollection';
-import { FunctionCallArgument } from '@/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgument';
+import { IFunctionCallCompiler } from './IFunctionCallCompiler';
+import { ICompiledCode } from './ICompiledCode';
 
 export class FunctionCallCompiler implements IFunctionCallCompiler {
-    public static readonly instance: IFunctionCallCompiler = new FunctionCallCompiler();
+  public static readonly instance: IFunctionCallCompiler = new FunctionCallCompiler();
 
-    protected constructor(
-        private readonly expressionsCompiler: IExpressionsCompiler = new ExpressionsCompiler()) {
-    }
+  protected constructor(
+    private readonly expressionsCompiler: IExpressionsCompiler = new ExpressionsCompiler(),
+  ) {
+  }
 
-    public compileCall(
-        calls: IFunctionCall[],
-        functions: ISharedFunctionCollection): ICompiledCode {
-        if (!functions) { throw new Error('undefined functions'); }
-        if (!calls) { throw new Error('undefined calls'); }
-        if (calls.some((f) => !f)) { throw new Error('undefined function call'); }
-        const context: ICompilationContext = {
-            allFunctions: functions,
-            callSequence: calls,
-            expressionsCompiler: this.expressionsCompiler,
-        };
-        const code = compileCallSequence(context);
-        return code;
-    }
+  public compileCall(
+    calls: IFunctionCall[],
+    functions: ISharedFunctionCollection,
+  ): ICompiledCode {
+    if (!functions) { throw new Error('undefined functions'); }
+    if (!calls) { throw new Error('undefined calls'); }
+    if (calls.some((f) => !f)) { throw new Error('undefined function call'); }
+    const context: ICompilationContext = {
+      allFunctions: functions,
+      callSequence: calls,
+      expressionsCompiler: this.expressionsCompiler,
+    };
+    const code = compileCallSequence(context);
+    return code;
+  }
 }
 
 interface ICompilationContext {
-    allFunctions: ISharedFunctionCollection;
-    callSequence: readonly IFunctionCall[];
-    expressionsCompiler: IExpressionsCompiler;
+  allFunctions: ISharedFunctionCollection;
+  callSequence: readonly IFunctionCall[];
+  expressionsCompiler: IExpressionsCompiler;
 }
 
 interface ICompiledFunctionCall {
-    readonly code: string;
-    readonly revertCode: string;
+  readonly code: string;
+  readonly revertCode: string;
 }
 
 function compileCallSequence(context: ICompilationContext): ICompiledFunctionCall {
-    const compiledFunctions = new Array<ICompiledFunctionCall>();
-    for (const call of context.callSequence) {
-        const compiledCode = compileSingleCall(call, context);
-        compiledFunctions.push(...compiledCode);
-    }
-    return {
-        code: merge(compiledFunctions.map((f) => f.code)),
-        revertCode: merge(compiledFunctions.map((f) => f.revertCode)),
-    };
+  const compiledFunctions = context.callSequence
+    .flatMap((call) => compileSingleCall(call, context));
+  return {
+    code: merge(compiledFunctions.map((f) => f.code)),
+    revertCode: merge(compiledFunctions.map((f) => f.revertCode)),
+  };
 }
 
-function compileSingleCall(call: IFunctionCall, context: ICompilationContext): ICompiledFunctionCall[] {
-    const func = context.allFunctions.getFunctionByName(call.functionName);
-    ensureThatCallArgumentsExistInParameterDefinition(func, call.args);
-    if (func.body.code) { // Function with inline code
-        const compiledCode = compileCode(func.body.code, call.args, context.expressionsCompiler);
-        return [ compiledCode ];
-    } else { // Function with inner calls
-        return func.body.calls
-            .map((innerCall) => {
-                const compiledArgs = compileArgs(innerCall.args, call.args, context.expressionsCompiler);
-                const compiledCall = new FunctionCall(innerCall.functionName, compiledArgs);
-                return compileSingleCall(compiledCall, context);
-            })
-            .flat();
-    }
+function compileSingleCall(
+  call: IFunctionCall,
+  context: ICompilationContext,
+): ICompiledFunctionCall[] {
+  const func = context.allFunctions.getFunctionByName(call.functionName);
+  ensureThatCallArgumentsExistInParameterDefinition(func, call.args);
+  if (func.body.code) { // Function with inline code
+    const compiledCode = compileCode(func.body.code, call.args, context.expressionsCompiler);
+    return [compiledCode];
+  }
+  // Function with inner calls
+  return func.body.calls
+    .map((innerCall) => {
+      const compiledArgs = compileArgs(innerCall.args, call.args, context.expressionsCompiler);
+      const compiledCall = new FunctionCall(innerCall.functionName, compiledArgs);
+      return compileSingleCall(compiledCall, context);
+    })
+    .flat();
 }
 
 function compileCode(
-    code: IFunctionCode,
-    args: IReadOnlyFunctionCallArgumentCollection,
-    compiler: IExpressionsCompiler): ICompiledFunctionCall {
-    return {
-        code: compiler.compileExpressions(code.do, args),
-        revertCode: compiler.compileExpressions(code.revert, args),
-    };
+  code: IFunctionCode,
+  args: IReadOnlyFunctionCallArgumentCollection,
+  compiler: IExpressionsCompiler,
+): ICompiledFunctionCall {
+  return {
+    code: compiler.compileExpressions(code.do, args),
+    revertCode: compiler.compileExpressions(code.revert, args),
+  };
 }
 
 function compileArgs(
-    argsToCompile: IReadOnlyFunctionCallArgumentCollection,
-    args: IReadOnlyFunctionCallArgumentCollection,
-    compiler: IExpressionsCompiler,
-    ): IReadOnlyFunctionCallArgumentCollection {
-    const compiledArgs = new FunctionCallArgumentCollection();
-    for (const parameterName of argsToCompile.getAllParameterNames()) {
-        const argumentValue = argsToCompile.getArgument(parameterName).argumentValue;
-        const compiledValue = compiler.compileExpressions(argumentValue, args);
-        const newArgument = new FunctionCallArgument(parameterName, compiledValue);
-        compiledArgs.addArgument(newArgument);
-    }
-    return compiledArgs;
+  argsToCompile: IReadOnlyFunctionCallArgumentCollection,
+  args: IReadOnlyFunctionCallArgumentCollection,
+  compiler: IExpressionsCompiler,
+): IReadOnlyFunctionCallArgumentCollection {
+  return argsToCompile
+    .getAllParameterNames()
+    .map((parameterName) => {
+      const { argumentValue } = argsToCompile.getArgument(parameterName);
+      const compiledValue = compiler.compileExpressions(argumentValue, args);
+      return new FunctionCallArgument(parameterName, compiledValue);
+    })
+    .reduce((compiledArgs, arg) => {
+      compiledArgs.addArgument(arg);
+      return compiledArgs;
+    }, new FunctionCallArgumentCollection());
 }
 
 function merge(codeParts: readonly string[]): string {
-    return codeParts
-        .filter((part) => part?.length > 0)
-        .join('\n');
+  return codeParts
+    .filter((part) => part?.length > 0)
+    .join('\n');
 }
 
 function ensureThatCallArgumentsExistInParameterDefinition(
-    func: ISharedFunction,
-    args: IReadOnlyFunctionCallArgumentCollection): void {
-    const callArgumentNames = args.getAllParameterNames();
-    const functionParameterNames = func.parameters.all.map((param) => param.name) || [];
-    const unexpectedParameters = findUnexpectedParameters(callArgumentNames, functionParameterNames);
-    throwIfNotEmpty(func.name, unexpectedParameters, functionParameterNames);
+  func: ISharedFunction,
+  args: IReadOnlyFunctionCallArgumentCollection,
+): void {
+  const callArgumentNames = args.getAllParameterNames();
+  const functionParameterNames = func.parameters.all.map((param) => param.name) || [];
+  const unexpectedParameters = findUnexpectedParameters(callArgumentNames, functionParameterNames);
+  throwIfNotEmpty(func.name, unexpectedParameters, functionParameterNames);
 }
 
 function findUnexpectedParameters(
-    callArgumentNames: string[],
-    functionParameterNames: string[]): string[] {
-    if (!callArgumentNames.length && !functionParameterNames.length) {
-        return [];
-    }
-    return callArgumentNames
-        .filter((callParam) => !functionParameterNames.includes(callParam));
+  callArgumentNames: string[],
+  functionParameterNames: string[],
+): string[] {
+  if (!callArgumentNames.length && !functionParameterNames.length) {
+    return [];
+  }
+  return callArgumentNames
+    .filter((callParam) => !functionParameterNames.includes(callParam));
 }
 
 function throwIfNotEmpty(
-    functionName: string,
-    unexpectedParameters: string[],
-    expectedParameters: string[]) {
-    if (!unexpectedParameters.length) {
-        return;
-    }
-    throw new Error(
-        `Function "${functionName}" has unexpected parameter(s) provided: ` +
-        `"${unexpectedParameters.join('", "')}"` +
-        '. Expected parameter(s): ' +
-        (expectedParameters.length ? `"${expectedParameters.join('", "')}"` : 'none'),
-    );
+  functionName: string,
+  unexpectedParameters: string[],
+  expectedParameters: string[],
+) {
+  if (!unexpectedParameters.length) {
+    return;
+  }
+  throw new Error(
+    // eslint-disable-next-line prefer-template
+    `Function "${functionName}" has unexpected parameter(s) provided: `
+      + `"${unexpectedParameters.join('", "')}"`
+      + '. Expected parameter(s): '
+      + (expectedParameters.length ? `"${expectedParameters.join('", "')}"` : 'none'),
+  );
 }

src/application/Parser/Script/Compiler/Function/Call/Compiler/ICompiledCode.ts

@@ -1,4 +1,4 @@
 export interface ICompiledCode {
-    readonly code: string;
-    readonly revertCode?: string;
+  readonly code: string;
+  readonly revertCode?: string;
 }

src/application/Parser/Script/Compiler/Function/Call/Compiler/IFunctionCallCompiler.ts

@@ -1,9 +1,9 @@
-import { ICompiledCode } from './ICompiledCode';
 import { ISharedFunctionCollection } from '@/application/Parser/Script/Compiler/Function/ISharedFunctionCollection';
 import { IFunctionCall } from '../IFunctionCall';
+import { ICompiledCode } from './ICompiledCode';
 
 export interface IFunctionCallCompiler {
-    compileCall(
-        calls: IFunctionCall[],
-        functions: ISharedFunctionCollection): ICompiledCode;
+  compileCall(
+    calls: IFunctionCall[],
+    functions: ISharedFunctionCollection): ICompiledCode;
 }

src/application/Parser/Script/Compiler/Function/Call/FunctionCall.ts

@@ -2,14 +2,15 @@ import { IReadOnlyFunctionCallArgumentCollection } from './Argument/IFunctionCal
 import { IFunctionCall } from './IFunctionCall';
 
 export class FunctionCall implements IFunctionCall {
-    constructor(
-        public readonly functionName: string,
-        public readonly args: IReadOnlyFunctionCallArgumentCollection) {
-        if (!functionName) {
-            throw new Error('empty function name in function call');
-        }
-        if (!args) {
-            throw new Error('undefined args');
-        }
+  constructor(
+    public readonly functionName: string,
+    public readonly args: IReadOnlyFunctionCallArgumentCollection,
+  ) {
+    if (!functionName) {
+      throw new Error('empty function name in function call');
     }
+    if (!args) {
+      throw new Error('undefined args');
+    }
+  }
 }

src/application/Parser/Script/Compiler/Function/Call/FunctionCallParser.ts

@@ -1,35 +1,42 @@
-import { FunctionCallData, FunctionCallsData } from 'js-yaml-loader!@/*';
+import { FunctionCallData, FunctionCallsData, FunctionCallParametersData } from 'js-yaml-loader!@/*';
 import { IFunctionCall } from './IFunctionCall';
 import { FunctionCallArgumentCollection } from './Argument/FunctionCallArgumentCollection';
 import { FunctionCallArgument } from './Argument/FunctionCallArgument';
 import { FunctionCall } from './FunctionCall';
 
 export function parseFunctionCalls(calls: FunctionCallsData): IFunctionCall[] {
-    if (!calls) {
-        throw new Error('undefined call data');
-    }
-    const sequence = getCallSequence(calls);
-    return sequence.map((call) => parseFunctionCall(call));
+  if (calls === undefined) {
+    throw new Error('undefined call data');
+  }
+  const sequence = getCallSequence(calls);
+  return sequence.map((call) => parseFunctionCall(call));
 }
 
 function getCallSequence(calls: FunctionCallsData): FunctionCallData[] {
-    if (typeof calls !== 'object') {
-        throw new Error('called function(s) must be an object');
-    }
-    if (calls instanceof Array) {
-        return calls as FunctionCallData[];
-    }
-    return [ calls as FunctionCallData ];
+  if (typeof calls !== 'object') {
+    throw new Error('called function(s) must be an object');
+  }
+  if (calls instanceof Array) {
+    return calls as FunctionCallData[];
+  }
+  return [calls as FunctionCallData];
 }
 
 function parseFunctionCall(call: FunctionCallData): IFunctionCall {
-    if (!call) {
-        throw new Error(`undefined function call`);
-    }
-    const args = new FunctionCallArgumentCollection();
-    for (const parameterName of Object.keys(call.parameters || {})) {
-        const arg = new FunctionCallArgument(parameterName, call.parameters[parameterName]);
-        args.addArgument(arg);
-    }
-    return new FunctionCall(call.function, args);
+  if (!call) {
+    throw new Error('undefined function call');
+  }
+  const callArgs = parseArgs(call.parameters);
+  return new FunctionCall(call.function, callArgs);
+}
+
+function parseArgs(
+  parameters: FunctionCallParametersData,
+): FunctionCallArgumentCollection {
+  return Object.keys(parameters || {})
+    .map((parameterName) => new FunctionCallArgument(parameterName, parameters[parameterName]))
+    .reduce((args, arg) => {
+      args.addArgument(arg);
+      return args;
+    }, new FunctionCallArgumentCollection());
 }

src/application/Parser/Script/Compiler/Function/Call/IFunctionCall.ts

@@ -1,6 +1,6 @@
 import { IReadOnlyFunctionCallArgumentCollection } from './Argument/IFunctionCallArgumentCollection';
 
 export interface IFunctionCall {
-    readonly functionName: string;
-    readonly args: IReadOnlyFunctionCallArgumentCollection;
+  readonly functionName: string;
+  readonly args: IReadOnlyFunctionCallArgumentCollection;
 }

src/application/Parser/Script/Compiler/Function/ISharedFunction.ts

@@ -1,24 +1,24 @@
 import { IReadOnlyFunctionParameterCollection } from './Parameter/IFunctionParameterCollection';
-import { IFunctionCall } from '../Function/Call/IFunctionCall';
+import { IFunctionCall } from './Call/IFunctionCall';
 
 export interface ISharedFunction {
-    readonly name: string;
-    readonly parameters: IReadOnlyFunctionParameterCollection;
-    readonly body: ISharedFunctionBody;
+  readonly name: string;
+  readonly parameters: IReadOnlyFunctionParameterCollection;
+  readonly body: ISharedFunctionBody;
 }
 
 export interface ISharedFunctionBody {
-    readonly type: FunctionBodyType;
-    readonly code: IFunctionCode;
-    readonly calls: readonly IFunctionCall[];
+  readonly type: FunctionBodyType;
+  readonly code: IFunctionCode;
+  readonly calls: readonly IFunctionCall[];
 }
 
 export enum FunctionBodyType {
-    Code,
-    Calls,
+  Code,
+  Calls,
 }
 
 export interface IFunctionCode {
-    readonly do: string;
-    readonly revert?: string;
+  readonly do: string;
+  readonly revert?: string;
 }

src/application/Parser/Script/Compiler/Function/ISharedFunctionCollection.ts

@@ -1,5 +1,5 @@
 import { ISharedFunction } from './ISharedFunction';
 
 export interface ISharedFunctionCollection {
-    getFunctionByName(name: string): ISharedFunction;
+  getFunctionByName(name: string): ISharedFunction;
 }

src/application/Parser/Script/Compiler/Function/ISharedFunctionsParser.ts

@@ -2,5 +2,5 @@ import { FunctionData } from 'js-yaml-loader!@/*';
 import { ISharedFunctionCollection } from './ISharedFunctionCollection';
 
 export interface ISharedFunctionsParser {
-    parseFunctions(functions: readonly FunctionData[]): ISharedFunctionCollection;
+  parseFunctions(functions: readonly FunctionData[]): ISharedFunctionCollection;
 }