win: fix, constrain and document WNS #227 #314

This change addresses issues #227 and #314 by preventing unintended side
effects on newer Windows versions while still offering WNS control on
supported systems.

Changes:

- Constrain `WpnUserService` disabling to Windows 10 v1909 and earlier.
- Update documentation for WNS and related services.
- Remove redundant warnings (in generated code and script title).
- Improve DisablePerUserService function:
  - Add documentation and generated comments
  - Implement Windows version constraint capability

docs/collection-files.md

@@ -30,6 +30,8 @@ Related documentation:
 
 ### Executables
 
+They represent independently executable actions with documentation and reversibility.
+
 An Executable is a logical entity that can
 
 - execute once compiled,

package.json

@@ -34,54 +34,54 @@
     "postuninstall": "electron-builder install-app-deps"
   },
   "dependencies": {
-    "@floating-ui/vue": "^1.0.6",
+    "@floating-ui/vue": "^1.1.1",
     "@juggle/resize-observer": "^3.4.0",
-    "ace-builds": "^1.33.0",
+    "ace-builds": "^1.35.3",
-    "electron-log": "^5.1.2",
+    "electron-log": "^5.1.6",
     "electron-progressbar": "^2.2.1",
-    "electron-updater": "^6.1.9",
+    "electron-updater": "^6.2.1",
     "file-saver": "^2.0.5",
     "markdown-it": "^14.1.0",
-    "vue": "^3.4.27"
+    "vue": "^3.4.32"
   },
   "devDependencies": {
     "@modyfi/vite-plugin-yaml": "^1.1.0",
-    "@rushstack/eslint-patch": "^1.10.2",
+    "@rushstack/eslint-patch": "^1.10.3",
     "@types/ace": "^0.0.52",
     "@types/file-saver": "^2.0.7",
-    "@types/markdown-it": "^14.0.1",
+    "@types/markdown-it": "^14.1.1",
     "@typescript-eslint/eslint-plugin": "6.21.0",
     "@typescript-eslint/parser": "6.21.0",
-    "@vitejs/plugin-legacy": "^5.3.2",
+    "@vitejs/plugin-legacy": "^5.4.1",
-    "@vitejs/plugin-vue": "^5.0.4",
+    "@vitejs/plugin-vue": "^5.0.5",
     "@vue/eslint-config-airbnb-with-typescript": "^8.0.0",
     "@vue/eslint-config-typescript": "12.0.0",
-    "@vue/test-utils": "^2.4.5",
+    "@vue/test-utils": "^2.4.6",
     "autoprefixer": "^10.4.19",
-    "cypress": "^13.7.3",
+    "cypress": "^13.13.1",
-    "electron": "^31.0.2",
+    "electron": "^31.2.1",
     "electron-builder": "^24.13.3",
     "electron-devtools-installer": "^3.2.0",
-    "electron-vite": "^2.1.0",
+    "electron-vite": "^2.3.0",
     "eslint": "8.57.0",
-    "eslint-plugin-cypress": "^2.15.1",
+    "eslint-plugin-cypress": "^3.3.0",
-    "eslint-plugin-vue": "^9.25.0",
+    "eslint-plugin-vue": "^9.27.0",
-    "eslint-plugin-vuejs-accessibility": "^2.2.1",
+    "eslint-plugin-vuejs-accessibility": "^2.4.0",
-    "jsdom": "^24.0.0",
+    "jsdom": "^24.1.0",
-    "markdownlint-cli": "^0.39.0",
+    "markdownlint-cli": "^0.41.0",
-    "postcss": "^8.4.38",
+    "postcss": "^8.4.39",
-    "remark-cli": "^12.0.0",
+    "remark-cli": "^12.0.1",
     "remark-lint-no-dead-urls": "^1.1.0",
     "remark-preset-lint-consistent": "^6.0.0",
     "remark-validate-links": "^13.0.1",
-    "sass": "^1.75.0",
+    "sass": "^1.77.8",
-    "start-server-and-test": "^2.0.3",
+    "start-server-and-test": "^2.0.4",
-    "terser": "^5.30.3",
+    "terser": "^5.31.3",
-    "tslib": "^2.6.2",
+    "tslib": "^2.6.3",
     "typescript": "^5.4.5",
-    "vite": "^5.2.8",
+    "vite": "^5.3.4",
-    "vitest": "^1.5.0",
+    "vitest": "^2.0.3",
-    "vue-tsc": "^2.0.13",
+    "vue-tsc": "^2.0.26",
     "yaml-lint": "^1.7.0"
   },
   "//devDependencies": {

scripts/verify-build-artifacts.js

@@ -91,7 +91,7 @@ async function verifyFilesExist(directoryPath, filePatterns) {
     if (!match) {
       die(
         `No file matches the pattern ${pattern.source} in directory \`${directoryPath}\``,
-        `\nFiles in directory:\n${files.map((file) => `\t- ${file}`).join('\n')}`,
+        `\nFiles in directory:\n${files.map((file) => `- ${file}`).join('\n')}`,
       );
     }
   }

src/application/Common/Text/FilterEmptyStrings.ts

@@ -0,0 +1,25 @@
+import { isArray } from '@/TypeHelpers';
+
+export type OptionalString = string | undefined | null;
+
+export function filterEmptyStrings(
+  texts: readonly OptionalString[],
+  isArrayType: typeof isArray = isArray,
+): string[] {
+  if (!isArrayType(texts)) {
+    throw new Error(`Invalid input: Expected an array, but received type ${typeof texts}.`);
+  }
+  assertArrayItemsAreStringLike(texts);
+  return texts
+    .filter((title): title is string => Boolean(title));
+}
+
+function assertArrayItemsAreStringLike(
+  texts: readonly unknown[],
+): asserts texts is readonly OptionalString[] {
+  const invalidItems = texts.filter((item) => !(typeof item === 'string' || item === undefined || item === null));
+  if (invalidItems.length > 0) {
+    const invalidTypes = invalidItems.map((item) => typeof item).join(', ');
+    throw new Error(`Invalid array items: Expected items as string, undefined, or null. Received invalid types: ${invalidTypes}.`);
+  }
+}

src/application/Common/Text/IndentText.ts

@@ -0,0 +1,29 @@
+import { isString } from '@/TypeHelpers';
+import { splitTextIntoLines } from './SplitTextIntoLines';
+
+export function indentText(
+  text: string,
+  indentLevel = 1,
+  utilities: TextIndentationUtilities = DefaultUtilities,
+): string {
+  if (!utilities.isStringType(text)) {
+    throw new Error(`Indentation error: The input must be a string. Received type: ${typeof text}.`);
+  }
+  if (indentLevel <= 0) {
+    throw new Error(`Indentation error: The indent level must be a positive integer. Received: ${indentLevel}.`);
+  }
+  const indentation = '\t'.repeat(indentLevel);
+  return utilities.splitIntoLines(text)
+    .map((line) => (line ? `${indentation}${line}` : line))
+    .join('\n');
+}
+
+interface TextIndentationUtilities {
+  readonly splitIntoLines: typeof splitTextIntoLines;
+  readonly isStringType: typeof isString;
+}
+
+const DefaultUtilities: TextIndentationUtilities = {
+  splitIntoLines: splitTextIntoLines,
+  isStringType: isString,
+};

src/application/Common/Text/SplitTextIntoLines.ts

@@ -0,0 +1,11 @@
+import { isString } from '@/TypeHelpers';
+
+export function splitTextIntoLines(
+  text: string,
+  isStringType = isString,
+): string[] {
+  if (!isStringType(text)) {
+    throw new Error(`Line splitting error: Expected a string but received type '${typeof text}'.`);
+  }
+  return text.split(/\r\n|\r|\n/);
+}

src/application/Context/ApplicationContext.ts

@@ -1,6 +1,6 @@
 import type { IApplication } from '@/domain/IApplication';
 import { OperatingSystem } from '@/domain/OperatingSystem';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { EventSource } from '@/infrastructure/Events/EventSource';
 import { assertInRange } from '@/application/Common/Enum';
 import { CategoryCollectionState } from './State/CategoryCollectionState';

src/application/Context/State/CategoryCollectionState.ts

@@ -1,4 +1,4 @@
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import { AdaptiveFilterContext } from './Filter/AdaptiveFilterContext';
 import { ApplicationCode } from './Code/ApplicationCode';

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

@@ -1,6 +1,8 @@
 import type { Script } from '@/domain/Executables/Script/Script';
 import type { ICodePosition } from '@/application/Context/State/Code/Position/ICodePosition';
 import type { SelectedScript } from '@/application/Context/State/Selection/Script/SelectedScript';
+import { splitTextIntoLines } from '@/application/Common/Text/SplitTextIntoLines';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import type { ICodeChangedEvent } from './ICodeChangedEvent';
 
 export class CodeChangedEvent implements ICodeChangedEvent {
@@ -36,12 +38,12 @@ export class CodeChangedEvent implements ICodeChangedEvent {
   }
 
   public getScriptPositionInCode(script: Script): ICodePosition {
-    return this.getPositionById(script.id);
+    return this.getPositionById(script.executableId);
   }
 
-  private getPositionById(scriptId: string): ICodePosition {
+  private getPositionById(scriptId: ExecutableId): ICodePosition {
     const position = [...this.scripts.entries()]
-      .filter(([s]) => s.id === scriptId)
+      .filter(([s]) => s.executableId === scriptId)
       .map(([, pos]) => pos)
       .at(0);
     if (!position) {
@@ -52,12 +54,12 @@ export class CodeChangedEvent implements ICodeChangedEvent {
 }
 
 function ensureAllPositionsExist(script: string, positions: ReadonlyArray<ICodePosition>) {
-  const totalLines = script.split(/\r\n|\r|\n/).length;
+  const totalLines = splitTextIntoLines(script).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}).`,
+        + ` (total code lines: ${totalLines}).`,
     );
   }
 }

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

@@ -1,3 +1,4 @@
+import { splitTextIntoLines } from '@/application/Common/Text/SplitTextIntoLines';
 import type { ICodeBuilder } from './ICodeBuilder';
 
 const TotalFunctionSeparatorChars = 58;
@@ -15,7 +16,7 @@ export abstract class CodeBuilder implements ICodeBuilder {
       this.lines.push('');
       return this;
     }
-    const lines = code.match(/[^\r\n]+/g);
+    const lines = splitTextIntoLines(code);
     if (lines) {
       this.lines.push(...lines);
     }

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

@@ -1,5 +1,5 @@
 import { EventSource } from '@/infrastructure/Events/EventSource';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { FilterChange } from './Event/FilterChange';
 import { LinearFilterStrategy } from './Strategy/LinearFilterStrategy';
 import type { FilterResult } from './Result/FilterResult';

src/application/Context/State/Filter/Strategy/FilterStrategy.ts

@@ -1,4 +1,4 @@
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { FilterResult } from '../Result/FilterResult';
 
 export interface FilterStrategy {

src/application/Context/State/Filter/Strategy/LinearFilterStrategy.ts

@@ -1,7 +1,7 @@
 import type { Category } from '@/domain/Executables/Category/Category';
 import type { ScriptCode } from '@/domain/Executables/Script/Code/ScriptCode';
 import type { Documentable } from '@/domain/Executables/Documentable';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { Script } from '@/domain/Executables/Script/Script';
 import { AppliedFilterResult } from '../Result/AppliedFilterResult';
 import type { FilterStrategy } from './FilterStrategy';

src/application/Context/State/ICategoryCollectionState.ts

@@ -1,4 +1,4 @@
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { OperatingSystem } from '@/domain/OperatingSystem';
 import type { IApplicationCode } from './Code/IApplicationCode';
 import type { ReadonlyFilterContext, FilterContext } from './Filter/FilterContext';

src/application/Context/State/Selection/Category/CategorySelectionChange.ts

@@ -1,3 +1,5 @@
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+
 type CategorySelectionStatus = {
   readonly isSelected: true;
   readonly isReverted: boolean;
@@ -6,7 +8,7 @@ type CategorySelectionStatus = {
 };
 
 export interface CategorySelectionChange {
-  readonly categoryId: number;
+  readonly categoryId: ExecutableId;
   readonly newStatus: CategorySelectionStatus;
 }
 

src/application/Context/State/Selection/Category/ScriptToCategorySelectionMapper.ts

@@ -1,5 +1,5 @@
 import type { Category } from '@/domain/Executables/Category/Category';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { CategorySelectionChange, CategorySelectionChangeCommand } from './CategorySelectionChange';
 import type { CategorySelection } from './CategorySelection';
 import type { ScriptSelection } from '../Script/ScriptSelection';
@@ -23,7 +23,7 @@ export class ScriptToCategorySelectionMapper implements CategorySelection {
       return false;
     }
     return scripts.every(
-      (script) => selectedScripts.some((selected) => selected.id === script.id),
+      (script) => selectedScripts.some((selected) => selected.id === script.executableId),
     );
   }
 
@@ -50,7 +50,7 @@ export class ScriptToCategorySelectionMapper implements CategorySelection {
     const scripts = category.getAllScriptsRecursively();
     const scriptsChangesInCategory = scripts
       .map((script): ScriptSelectionChange => ({
-        scriptId: script.id,
+        scriptId: script.executableId,
         newStatus: {
           ...change.newStatus,
         },

src/application/Context/State/Selection/Script/DebouncedScriptSelection.ts

@@ -2,8 +2,9 @@ import { InMemoryRepository } from '@/infrastructure/Repository/InMemoryReposito
 import type { Script } from '@/domain/Executables/Script/Script';
 import { EventSource } from '@/infrastructure/Events/EventSource';
 import type { ReadonlyRepository, Repository } from '@/application/Repository/Repository';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { batchedDebounce } from '@/application/Common/Timing/BatchedDebounce';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import { UserSelectedScript } from './UserSelectedScript';
 import type { ScriptSelection } from './ScriptSelection';
 import type { ScriptSelectionChange, ScriptSelectionChangeCommand } from './ScriptSelectionChange';
@@ -16,7 +17,7 @@ export type DebounceFunction = typeof batchedDebounce<ScriptSelectionChangeComma
 export class DebouncedScriptSelection implements ScriptSelection {
   public readonly changed = new EventSource<ReadonlyArray<SelectedScript>>();
 
-  private readonly scripts: Repository<string, SelectedScript>;
+  private readonly scripts: Repository<SelectedScript>;
 
   public readonly processChanges: ScriptSelection['processChanges'];
 
@@ -25,7 +26,7 @@ export class DebouncedScriptSelection implements ScriptSelection {
     selectedScripts: ReadonlyArray<SelectedScript>,
     debounce: DebounceFunction = batchedDebounce,
   ) {
-    this.scripts = new InMemoryRepository<string, SelectedScript>();
+    this.scripts = new InMemoryRepository<SelectedScript>();
     for (const script of selectedScripts) {
       this.scripts.addItem(script);
     }
@@ -38,8 +39,8 @@ export class DebouncedScriptSelection implements ScriptSelection {
     );
   }
 
-  public isSelected(scriptId: string): boolean {
+  public isSelected(scriptExecutableId: ExecutableId): boolean {
-    return this.scripts.exists(scriptId);
+    return this.scripts.exists(scriptExecutableId);
   }
 
   public get selectedScripts(): readonly SelectedScript[] {
@@ -49,7 +50,7 @@ export class DebouncedScriptSelection implements ScriptSelection {
   public selectAll(): void {
     const scriptsToSelect = this.collection
       .getAllScripts()
-      .filter((script) => !this.scripts.exists(script.id))
+      .filter((script) => !this.scripts.exists(script.executableId))
       .map((script) => new UserSelectedScript(script, false));
     if (scriptsToSelect.length === 0) {
       return;
@@ -116,12 +117,12 @@ export class DebouncedScriptSelection implements ScriptSelection {
   private applyChange(change: ScriptSelectionChange): number {
     const script = this.collection.getScript(change.scriptId);
     if (change.newStatus.isSelected) {
-      return this.addOrUpdateScript(script.id, change.newStatus.isReverted);
+      return this.addOrUpdateScript(script.executableId, change.newStatus.isReverted);
     }
-    return this.removeScript(script.id);
+    return this.removeScript(script.executableId);
   }
 
-  private addOrUpdateScript(scriptId: string, revert: boolean): number {
+  private addOrUpdateScript(scriptId: ExecutableId, revert: boolean): number {
     const script = this.collection.getScript(scriptId);
     const selectedScript = new UserSelectedScript(script, revert);
     if (!this.scripts.exists(selectedScript.id)) {
@@ -136,7 +137,7 @@ export class DebouncedScriptSelection implements ScriptSelection {
     return 1;
   }
 
-  private removeScript(scriptId: string): number {
+  private removeScript(scriptId: ExecutableId): number {
     if (!this.scripts.exists(scriptId)) {
       return 0;
     }
@@ -152,24 +153,24 @@ function assertNonEmptyScriptSelection(selectedItems: readonly Script[]) {
 }
 
 function getScriptIdsToBeSelected(
-  existingItems: ReadonlyRepository<string, SelectedScript>,
+  existingItems: ReadonlyRepository<SelectedScript>,
   desiredScripts: readonly Script[],
 ): string[] {
   return desiredScripts
-    .filter((script) => !existingItems.exists(script.id))
+    .filter((script) => !existingItems.exists(script.executableId))
-    .map((script) => script.id);
+    .map((script) => script.executableId);
 }
 
 function getScriptIdsToBeDeselected(
-  existingItems: ReadonlyRepository<string, SelectedScript>,
+  existingItems: ReadonlyRepository<SelectedScript>,
   desiredScripts: readonly Script[],
 ): string[] {
   return existingItems
     .getItems()
-    .filter((existing) => !desiredScripts.some((script) => existing.id === script.id))
+    .filter((existing) => !desiredScripts.some((script) => existing.id === script.executableId))
     .map((script) => script.id);
 }
 
 function equals(a: SelectedScript, b: SelectedScript): boolean {
-  return a.script.equals(b.script.id) && a.revert === b.revert;
+  return a.script.executableId === b.script.executableId && a.revert === b.revert;
 }

src/application/Context/State/Selection/Script/ScriptSelection.ts

@@ -1,12 +1,13 @@
 import type { IEventSource } from '@/infrastructure/Events/IEventSource';
 import type { Script } from '@/domain/Executables/Script/Script';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import type { SelectedScript } from './SelectedScript';
 import type { ScriptSelectionChangeCommand } from './ScriptSelectionChange';
 
 export interface ReadonlyScriptSelection {
   readonly changed: IEventSource<readonly SelectedScript[]>;
   readonly selectedScripts: readonly SelectedScript[];
-  isSelected(scriptId: string): boolean;
+  isSelected(scriptExecutableId: ExecutableId): boolean;
 }
 
 export interface ScriptSelection extends ReadonlyScriptSelection {

src/application/Context/State/Selection/Script/ScriptSelectionChange.ts

@@ -1,3 +1,5 @@
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+
 export type ScriptSelectionStatus = {
   readonly isSelected: true;
   readonly isReverted: boolean;
@@ -7,7 +9,7 @@ export type ScriptSelectionStatus = {
 };
 
 export interface ScriptSelectionChange {
-  readonly scriptId: string;
+  readonly scriptId: ExecutableId;
   readonly newStatus: ScriptSelectionStatus;
 }
 

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

@@ -1,9 +1,7 @@
-import type { IEntity } from '@/infrastructure/Entity/IEntity';
 import type { Script } from '@/domain/Executables/Script/Script';
+import type { RepositoryEntity } from '@/application/Repository/RepositoryEntity';
 
-type ScriptId = Script['id'];
+export interface SelectedScript extends RepositoryEntity {
-
-export interface SelectedScript extends IEntity<ScriptId> {
   readonly script: Script;
   readonly revert: boolean;
 }

src/application/Context/State/Selection/Script/UserSelectedScript.ts

@@ -1,17 +1,16 @@
-import { BaseEntity } from '@/infrastructure/Entity/BaseEntity';
 import type { Script } from '@/domain/Executables/Script/Script';
-import type { SelectedScript } from './SelectedScript';
+import type { RepositoryEntity } from '@/application/Repository/RepositoryEntity';
 
-type SelectedScriptId = SelectedScript['id'];
+export class UserSelectedScript implements RepositoryEntity {
+  public readonly id: string;
 
-export class UserSelectedScript extends BaseEntity<SelectedScriptId> {
   constructor(
     public readonly script: Script,
     public readonly revert: boolean,
   ) {
-    super(script.id);
+    this.id = script.executableId;
     if (revert && !script.canRevert()) {
-      throw new Error(`The script with ID '${script.id}' is not reversible and cannot be reverted.`);
+      throw new Error(`The script with ID '${script.executableId}' is not reversible and cannot be reverted.`);
     }
   }
 }

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

@@ -1,4 +1,4 @@
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { ScriptToCategorySelectionMapper } from './Category/ScriptToCategorySelectionMapper';
 import { DebouncedScriptSelection } from './Script/DebouncedScriptSelection';
 import type { CategorySelection } from './Category/CategorySelection';

src/application/Parser/ApplicationParser.ts

@@ -31,7 +31,7 @@ function validateCollectionsData(
 ) {
   validator.assertNonEmptyCollection({
     value: collections,
-    valueName: 'collections',
+    valueName: 'Collections',
   });
 }
 

src/application/Parser/CategoryCollectionParser.ts

@@ -1,7 +1,7 @@
 import type { CollectionData } from '@/application/collections/';
 import { OperatingSystem } from '@/domain/OperatingSystem';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
-import { CategoryCollection } from '@/domain/CategoryCollection';
+import { CategoryCollection } from '@/domain/Collection/CategoryCollection';
 import type { ProjectDetails } from '@/domain/Project/ProjectDetails';
 import { createEnumParser, type EnumParser } from '../Common/Enum';
 import { parseCategory, type CategoryParser } from './Executable/CategoryParser';
@@ -45,14 +45,14 @@ function validateCollection(
 ): void {
   validator.assertObject({
     value: content,
-    valueName: 'collection',
+    valueName: 'Collection',
     allowedProperties: [
       'os', 'scripting', 'actions', 'functions',
     ],
   });
   validator.assertNonEmptyCollection({
     value: content.actions,
-    valueName: '"actions" in collection',
+    valueName: '\'actions\' in collection',
   });
 }
 

src/application/Parser/Common/ContextualError.ts

@@ -1,42 +1,116 @@
 import { CustomError } from '@/application/Common/CustomError';
+import { indentText } from '@/application/Common/Text/IndentText';
 
 export interface ErrorWithContextWrapper {
   (
-    error: Error,
+    innerError: Error,
     additionalContext: string,
   ): Error;
 }
 
 export const wrapErrorWithAdditionalContext: ErrorWithContextWrapper = (
-  error: Error,
+  innerError,
-  additionalContext: string,
+  additionalContext,
 ) => {
-  return (error instanceof ContextualError ? error : new ContextualError(error))
+  if (!additionalContext) {
-    .withAdditionalContext(additionalContext);
+    throw new Error('Missing additional context');
+  }
+  return new ContextualError({
+    innerError,
+    additionalContext,
+  });
 };
 
-/* AggregateError is similar but isn't well-serialized or displayed by browsers */
+/**
+ * Class for building a detailed error trace.
+ *
+ * Alternatives considered:
+ * - `AggregateError`:
+ *   Similar but not well-serialized or displayed by browsers such as Chromium (last tested v126).
+ * - `cause` property:
+ *   Not displayed by all browsers (last tested v126).
+ *   Reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error/cause
+ *
+ * This is immutable where the constructor sets the values because using getter functions such as
+ * `get cause()`, `get message()` does not work on Chromium (last tested v126), but works fine on
+ * Firefox (last tested v127).
+ */
 class ContextualError extends CustomError {
-  private readonly additionalContext = new Array<string>();
+  constructor(public readonly context: ErrorContext) {
-
+    super(
-  constructor(
+      generateDetailedErrorMessageWithContext(context),
-    public readonly innerError: Error,
+      {
-  ) {
+        cause: context.innerError,
-    super();
+      },
-  }
+    );
-
-  public withAdditionalContext(additionalContext: string): this {
-    this.additionalContext.push(additionalContext);
-    return this;
-  }
-
-  public get message(): string { // toString() is not used when Chromium logs it on console
-    return [
-      '\n',
-      this.innerError.message,
-      '\n',
-      'Additional context:',
-      ...this.additionalContext.map((context, index) => `${index + 1}: ${context}`),
-    ].join('\n');
   }
 }
+
+interface ErrorContext {
+  readonly innerError: Error;
+  readonly additionalContext: string;
+}
+
+function generateDetailedErrorMessageWithContext(
+  context: ErrorContext,
+): string {
+  return [
+    '\n',
+    // Display the current error message first, then the root cause.
+    // This prevents repetitive main messages for errors with a `cause:` chain,
+    // aligning with browser error display conventions.
+    context.additionalContext,
+    '\n',
+    'Error Trace (starting from root cause):',
+    indentText(
+      formatErrorTrace(
+        // Displaying contexts from the top frame (deepest, most recent) aligns with
+        // common debugger/compiler standard.
+        extractErrorTraceAscendingFromDeepest(context),
+      ),
+    ),
+    '\n',
+  ].join('\n');
+}
+
+function extractErrorTraceAscendingFromDeepest(
+  context: ErrorContext,
+): string[] {
+  const originalError = findRootError(context.innerError);
+  const contextsDescendingFromMostRecent: string[] = [
+    context.additionalContext,
+    ...gatherContextsFromErrorChain(context.innerError),
+    originalError.toString(),
+  ];
+  const contextsAscendingFromDeepest = contextsDescendingFromMostRecent.reverse();
+  return contextsAscendingFromDeepest;
+}
+
+function findRootError(error: Error): Error {
+  if (error instanceof ContextualError) {
+    return findRootError(error.context.innerError);
+  }
+  return error;
+}
+
+function gatherContextsFromErrorChain(
+  error: Error,
+  accumulatedContexts: string[] = [],
+): string[] {
+  if (error instanceof ContextualError) {
+    accumulatedContexts.push(error.context.additionalContext);
+    return gatherContextsFromErrorChain(error.context.innerError, accumulatedContexts);
+  }
+  return accumulatedContexts;
+}
+
+function formatErrorTrace(
+  errorMessages: readonly string[],
+): string {
+  if (errorMessages.length === 1) {
+    return errorMessages[0];
+  }
+  return errorMessages
+    .map((context, index) => `${index + 1}.${indentText(context)}`)
+    .join('\n');
+}

src/application/Parser/Common/TypeValidator.ts

@@ -108,7 +108,7 @@ function assertArray(
   valueName: string,
 ): asserts value is Array<unknown> {
   if (!isArray(value)) {
-    throw new Error(`'${valueName}' should be of type 'array', but is of type '${typeof value}'.`);
+    throw new Error(`${valueName} should be of type 'array', but is of type '${typeof value}'.`);
   }
 }
 
@@ -117,7 +117,7 @@ function assertString(
   valueName: string,
 ): asserts value is string {
   if (!isString(value)) {
-    throw new Error(`'${valueName}' should be of type 'string', but is of type '${typeof value}'.`);
+    throw new Error(`${valueName} should be of type 'string', but is of type '${typeof value}'.`);
   }
 }
 

src/application/Parser/Executable/CategoryParser.ts

@@ -3,16 +3,14 @@ import type {
 } from '@/application/collections/';
 import { wrapErrorWithAdditionalContext, type ErrorWithContextWrapper } from '@/application/Parser/Common/ContextualError';
 import type { Category } from '@/domain/Executables/Category/Category';
-import { CollectionCategory } from '@/domain/Executables/Category/CollectionCategory';
 import type { Script } from '@/domain/Executables/Script/Script';
+import { createCategory, type CategoryFactory } from '@/domain/Executables/Category/CategoryFactory';
 import { parseDocs, type DocsParser } from './DocumentationParser';
 import { parseScript, type ScriptParser } from './Script/ScriptParser';
 import { createExecutableDataValidator, type ExecutableValidator, type ExecutableValidatorFactory } from './Validation/ExecutableValidator';
 import { ExecutableType } from './Validation/ExecutableType';
 import type { CategoryCollectionSpecificUtilities } from './CategoryCollectionSpecificUtilities';
 
-let categoryIdCounter = 0;
-
 export const parseCategory: CategoryParser = (
   category: CategoryData,
   collectionUtilities: CategoryCollectionSpecificUtilities,
@@ -59,7 +57,7 @@ function parseCategoryRecursively(
   }
   try {
     return context.categoryUtilities.createCategory({
-      id: categoryIdCounter++,
+      executableId: context.categoryData.category, // Pseudo-ID for uniqueness until real ID support
       name: context.categoryData.category,
       docs: context.categoryUtilities.parseDocs(context.categoryData),
       subcategories: children.subcategories,
@@ -84,7 +82,7 @@ function ensureValidCategory(
   });
   validator.assertType((v) => v.assertObject({
     value: category,
-    valueName: category.category ?? 'category',
+    valueName: `Category '${category.category}'` ?? 'Category',
     allowedProperties: [
       'docs', 'children', 'category',
     ],
@@ -166,10 +164,6 @@ function hasProperty(
   return Object.prototype.hasOwnProperty.call(object, propertyName);
 }
 
-export type CategoryFactory = (
-  ...parameters: ConstructorParameters<typeof CollectionCategory>
-) => Category;
-
 interface CategoryParserUtilities {
   readonly createCategory: CategoryFactory;
   readonly wrapError: ErrorWithContextWrapper;
@@ -179,7 +173,7 @@ interface CategoryParserUtilities {
 }
 
 const DefaultCategoryParserUtilities: CategoryParserUtilities = {
-  createCategory: (...parameters) => new CollectionCategory(...parameters),
+  createCategory,
   wrapError: wrapErrorWithAdditionalContext,
   createValidator: createExecutableDataValidator,
   parseScript,

src/application/Parser/Executable/Script/Compiler/Expressions/Pipes/Pipe.ts

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

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

@@ -1,11 +1,11 @@
-import type { IPipe } from '../IPipe';
+import type { Pipe } from '../Pipe';
 
-export class EscapeDoubleQuotes implements IPipe {
+export class EscapeDoubleQuotes implements Pipe {
   public readonly name: string = 'escapeDoubleQuotes';
 
   public apply(raw: string): string {
     if (!raw) {
-      return raw;
+      return '';
     }
     return raw.replaceAll('"', '"^""');
     /* eslint-disable vue/max-len */

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

@@ -1,6 +1,7 @@
-import type { IPipe } from '../IPipe';
+import { splitTextIntoLines } from '@/application/Common/Text/SplitTextIntoLines';
+import type { Pipe } from '../Pipe';
 
-export class InlinePowerShell implements IPipe {
+export class InlinePowerShell implements Pipe {
   public readonly name: string = 'inlinePowerShell';
 
   public apply(code: string): string {
@@ -8,9 +9,11 @@ export class InlinePowerShell implements IPipe {
       return code;
     }
     const processor = new Array<(data: string) => string>(...[ // for broken ESlint "indent"
+      // Order is important
       inlineComments,
-      mergeLinesWithBacktick,
       mergeHereStrings,
+      mergeLinesWithBacktick,
+      mergeLinesWithBracketCodeBlocks,
       mergeNewLines,
     ]).reduce((a, b) => (data) => b(a(data)));
     const newCode = processor(code);
@@ -89,10 +92,6 @@ function inlineComments(code: string): string {
     */
 }
 
-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://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules?view=powershell-7.4#here-strings
@@ -102,18 +101,18 @@ function mergeHereStrings(code: string) {
   return code.replaceAll(regex, (_$, quotes, scope) => {
     const newString = getHereStringHandler(quotes);
     const escaped = scope.replaceAll(quotes, newString.escapedQuotes);
-    const lines = getLines(escaped);
+    const lines = splitTextIntoLines(escaped);
     const inlined = lines.join(newString.separator);
     const quoted = `${newString.quotesAround}${inlined}${newString.quotesAround}`;
     return quoted;
   });
 }
-interface IInlinedHereString {
+interface InlinedHereString {
   readonly quotesAround: string;
   readonly escapedQuotes: string;
   readonly separator: string;
 }
-function getHereStringHandler(quotes: string): IInlinedHereString {
+function getHereStringHandler(quotes: string): InlinedHereString {
   /*
     We handle @' and @" differently.
     Single quotes are interpreted literally and doubles are expandable.
@@ -158,9 +157,33 @@ function mergeLinesWithBacktick(code: string) {
   return code.replaceAll(/ +`\s*(?:\r\n|\r|\n)\s*/g, ' ');
 }
 
-function mergeNewLines(code: string) {
+/**
-  return getLines(code)
+ * Inlines code blocks in PowerShell scripts while preserving correct syntax.
-    .map((line) => line.trim())
+ * It removes unnecessary newlines and spaces around brackets,
-    .filter((line) => line.length > 0)
+ * inlining the code where possible.
-    .join('; ');
+ * This prevents syntax errors like "Unexpected token '}'" when inlining brackets.
+ */
+function mergeLinesWithBracketCodeBlocks(code: string): string {
+  return code
+    // Opening bracket: [whitespace] Opening bracket (newline)
+    .replace(/(?<=.*)\s*{[\r\n][\s\r\n]*/g, ' { ')
+    // Closing bracket: [whitespace] Closing bracket (newline) (continuation keyword)
+    .replace(/\s*}[\r\n][\s\r\n]*(?=elseif|else|catch|finally|until)/g, ' } ')
+    .replace(/(?<=do\s*{.*)[\r\n\s]*}[\r\n][\r\n\s]*(?=while)/g, ' } '); // Do-While
+}
+
+function mergeNewLines(code: string) {
+  const nonEmptyLines = splitTextIntoLines(code)
+    .map((line) => line.trim())
+    .filter((line) => line.length > 0);
+
+  return nonEmptyLines
+    .map((line, index) => {
+      const isLastLine = index === nonEmptyLines.length - 1;
+      if (isLastLine) {
+        return line;
+      }
+      return line.endsWith(';') ? line : `${line};`;
+    })
+    .join(' ');
 }

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

@@ -1,6 +1,6 @@
 import { InlinePowerShell } from './PipeDefinitions/InlinePowerShell';
 import { EscapeDoubleQuotes } from './PipeDefinitions/EscapeDoubleQuotes';
-import type { IPipe } from './IPipe';
+import type { Pipe } from './Pipe';
 
 const RegisteredPipes = [
   new EscapeDoubleQuotes(),
@@ -8,19 +8,19 @@ const RegisteredPipes = [
 ];
 
 export interface IPipeFactory {
-  get(pipeName: string): IPipe;
+  get(pipeName: string): Pipe;
 }
 
 export class PipeFactory implements IPipeFactory {
-  private readonly pipes = new Map<string, IPipe>();
+  private readonly pipes = new Map<string, Pipe>();
 
-  constructor(pipes: readonly IPipe[] = RegisteredPipes) {
+  constructor(pipes: readonly Pipe[] = RegisteredPipes) {
     for (const pipe of pipes) {
       this.registerPipe(pipe);
     }
   }
 
-  public get(pipeName: string): IPipe {
+  public get(pipeName: string): Pipe {
     validatePipeName(pipeName);
     const pipe = this.pipes.get(pipeName);
     if (!pipe) {
@@ -29,7 +29,7 @@ export class PipeFactory implements IPipeFactory {
     return pipe;
   }
 
-  private registerPipe(pipe: IPipe): void {
+  private registerPipe(pipe: Pipe): void {
     validatePipeName(pipe.name);
     if (this.pipes.has(pipe.name)) {
       throw new Error(`Pipe name must be unique: "${pipe.name}"`);

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

@@ -22,7 +22,7 @@ export const createFunctionCallArgument: FunctionCallArgumentFactory = (
   utilities.validateParameterName(parameterName);
   utilities.typeValidator.assertNonEmptyString({
     value: argumentValue,
-    valueName: `Missing argument value for the parameter "${parameterName}".`,
+    valueName: `Function parameter '${parameterName}'`,
   });
   return {
     parameterName,

src/application/Parser/Executable/Script/Compiler/Function/Call/Compiler/CodeSegmentJoin/NewlineCodeSegmentMerger.ts

@@ -1,3 +1,4 @@
+import { filterEmptyStrings } from '@/application/Common/Text/FilterEmptyStrings';
 import type { CompiledCode } from '../CompiledCode';
 import type { CodeSegmentMerger } from './CodeSegmentMerger';
 
@@ -8,11 +9,9 @@ export class NewlineCodeSegmentMerger implements CodeSegmentMerger {
     }
     return {
       code: joinCodeParts(codeSegments.map((f) => f.code)),
-      revertCode: joinCodeParts(
+      revertCode: joinCodeParts(filterEmptyStrings(
-        codeSegments
+        codeSegments.map((f) => f.revertCode),
-          .map((f) => f.revertCode)
+      )),
-          .filter((code): code is string => Boolean(code)),
-      ),
     };
   }
 }

src/application/Parser/Executable/Script/Compiler/Function/Call/Compiler/SingleCall/Strategies/InlineFunctionCallCompiler.ts

@@ -3,6 +3,7 @@ import type { IExpressionsCompiler } from '@/application/Parser/Executable/Scrip
 import { FunctionBodyType, type ISharedFunction } from '@/application/Parser/Executable/Script/Compiler/Function/ISharedFunction';
 import type { FunctionCall } from '@/application/Parser/Executable/Script/Compiler/Function/Call/FunctionCall';
 import type { CompiledCode } from '@/application/Parser/Executable/Script/Compiler/Function/Call/Compiler/CompiledCode';
+import { indentText } from '@/application/Common/Text/IndentText';
 import type { SingleCallCompilerStrategy } from '../SingleCallCompilerStrategy';
 
 export class InlineFunctionCallCompiler implements SingleCallCompilerStrategy {
@@ -22,10 +23,12 @@ export class InlineFunctionCallCompiler implements SingleCallCompilerStrategy {
     if (calledFunction.body.type !== FunctionBodyType.Code) {
       throw new Error([
         'Unexpected function body type.',
-        `\tExpected: "${FunctionBodyType[FunctionBodyType.Code]}"`,
+        indentText([
-        `\tActual: "${FunctionBodyType[calledFunction.body.type]}"`,
+          `Expected: "${FunctionBodyType[FunctionBodyType.Code]}"`,
+          `Actual: "${FunctionBodyType[calledFunction.body.type]}"`,
+        ].join('\n')),
         'Function:',
-        `\t${JSON.stringify(callToFunction)}`,
+        indentText(JSON.stringify(callToFunction)),
       ].join('\n'));
     }
     const { code } = calledFunction.body;

src/application/Parser/Executable/Script/Compiler/Function/Call/FunctionCallsParser.ts

@@ -42,7 +42,7 @@ function getCallSequence(calls: FunctionCallsData, validator: TypeValidator): Fu
   if (isArray(calls)) {
     validator.assertNonEmptyCollection({
       value: calls,
-      valueName: 'function call sequence',
+      valueName: 'Function call sequence',
     });
     return calls as FunctionCallData[];
   }
@@ -56,7 +56,7 @@ function parseFunctionCall(
 ): FunctionCall {
   utilities.typeValidator.assertObject({
     value: call,
-    valueName: 'function call',
+    valueName: 'Function call',
     allowedProperties: ['function', 'parameters'],
   });
   const callArgs = parseArgs(call.parameters, utilities.createCallArgument);

src/application/Parser/Executable/Script/Compiler/Function/Shared/ParameterNameValidator.ts

@@ -13,7 +13,7 @@ export const validateParameterName = (
 ) => {
   typeValidator.assertNonEmptyString({
     value: parameterName,
-    valueName: 'parameter name',
+    valueName: 'Parameter name',
     rule: {
       expectedMatch: /^[0-9a-zA-Z]+$/,
       errorMessage: `parameter name must be alphanumeric but it was "${parameterName}".`,

src/application/Parser/Executable/Script/Compiler/Function/SharedFunctionsParser.ts

@@ -9,6 +9,7 @@ import { NoDuplicatedLines } from '@/application/Parser/Executable/Script/Valida
 import type { ICodeValidator } from '@/application/Parser/Executable/Script/Validation/ICodeValidator';
 import { isArray, isNullOrUndefined, isPlainObject } from '@/TypeHelpers';
 import { wrapErrorWithAdditionalContext, type ErrorWithContextWrapper } from '@/application/Parser/Common/ContextualError';
+import { filterEmptyStrings } from '@/application/Common/Text/FilterEmptyStrings';
 import { createFunctionWithInlineCode, createCallerFunction } from './SharedFunction';
 import { SharedFunctionCollection } from './SharedFunctionCollection';
 import { parseFunctionCalls, type FunctionCallsParser } from './Call/FunctionCallsParser';
@@ -82,8 +83,7 @@ function validateCode(
   syntax: ILanguageSyntax,
   validator: ICodeValidator,
 ): void {
-  [data.code, data.revertCode]
+  filterEmptyStrings([data.code, data.revertCode])
-    .filter((code): code is string => Boolean(code))
     .forEach(
       (code) => validator.throwIfInvalid(
         code,
@@ -204,9 +204,9 @@ function ensureNoDuplicateCode(functions: readonly FunctionData[]) {
   if (duplicateCodes.length > 0) {
     throw new Error(`duplicate "code" in functions: ${printList(duplicateCodes)}`);
   }
-  const duplicateRevertCodes = getDuplicates(callFunctions
+  const duplicateRevertCodes = getDuplicates(filterEmptyStrings(
-    .map((func) => func.revertCode)
+    callFunctions.map((func) => func.revertCode),
-    .filter((code): code is string => Boolean(code)));
+  ));
   if (duplicateRevertCodes.length > 0) {
     throw new Error(`duplicate "revertCode" in functions: ${printList(duplicateRevertCodes)}`);
   }

src/application/Parser/Executable/Script/Compiler/ScriptCompiler.ts

@@ -6,6 +6,7 @@ import { NoEmptyLines } from '@/application/Parser/Executable/Script/Validation/
 import type { ICodeValidator } from '@/application/Parser/Executable/Script/Validation/ICodeValidator';
 import { wrapErrorWithAdditionalContext, type ErrorWithContextWrapper } from '@/application/Parser/Common/ContextualError';
 import { createScriptCode, type ScriptCodeFactory } from '@/domain/Executables/Script/Code/ScriptCodeFactory';
+import { filterEmptyStrings } from '@/application/Common/Text/FilterEmptyStrings';
 import { FunctionCallSequenceCompiler } from './Function/Call/Compiler/FunctionCallSequenceCompiler';
 import { parseFunctionCalls } from './Function/Call/FunctionCallsParser';
 import { parseSharedFunctions, type SharedFunctionsParser } from './Function/SharedFunctionsParser';
@@ -71,9 +72,7 @@ export class ScriptCompiler implements IScriptCompiler {
 }
 
 function validateCompiledCode(compiledCode: CompiledCode, validator: ICodeValidator): void {
-  [compiledCode.code, compiledCode.revertCode]
+  filterEmptyStrings([compiledCode.code, compiledCode.revertCode])
-    .filter((code): code is string => Boolean(code))
-    .map((code) => code as string)
     .forEach(
       (code) => validator.throwIfInvalid(
         code,

src/application/Parser/Executable/Script/ScriptParser.ts

@@ -1,7 +1,6 @@
 import type { ScriptData, CodeScriptData, CallScriptData } from '@/application/collections/';
 import { NoEmptyLines } from '@/application/Parser/Executable/Script/Validation/Rules/NoEmptyLines';
 import type { ILanguageSyntax } from '@/application/Parser/Executable/Script/Validation/Syntax/ILanguageSyntax';
-import { CollectionScript } from '@/domain/Executables/Script/CollectionScript';
 import { RecommendationLevel } from '@/domain/Executables/Script/RecommendationLevel';
 import type { ScriptCode } from '@/domain/Executables/Script/Code/ScriptCode';
 import type { ICodeValidator } from '@/application/Parser/Executable/Script/Validation/ICodeValidator';
@@ -10,6 +9,8 @@ import type { ScriptCodeFactory } from '@/domain/Executables/Script/Code/ScriptC
 import { createScriptCode } from '@/domain/Executables/Script/Code/ScriptCodeFactory';
 import type { Script } from '@/domain/Executables/Script/Script';
 import { createEnumParser, type EnumParser } from '@/application/Common/Enum';
+import { filterEmptyStrings } from '@/application/Common/Text/FilterEmptyStrings';
+import { createScript, type ScriptFactory } from '@/domain/Executables/Script/ScriptFactory';
 import { parseDocs, type DocsParser } from '../DocumentationParser';
 import { ExecutableType } from '../Validation/ExecutableType';
 import { createExecutableDataValidator, type ExecutableValidator, type ExecutableValidatorFactory } from '../Validation/ExecutableValidator';
@@ -37,6 +38,7 @@ export const parseScript: ScriptParser = (
   validateScript(data, validator);
   try {
     const script = scriptUtilities.createScript({
+      executableId: data.name, // Pseudo-ID for uniqueness until real ID support
       name: data.name,
       code: parseCode(
         data,
@@ -86,8 +88,7 @@ function validateHardcodedCodeWithoutCalls(
   validator: ICodeValidator,
   syntax: ILanguageSyntax,
 ) {
-  [scriptCode.execute, scriptCode.revert]
+  filterEmptyStrings([scriptCode.execute, scriptCode.revert])
-    .filter((code): code is string => Boolean(code))
     .forEach(
       (code) => validator.throwIfInvalid(
         code,
@@ -102,7 +103,7 @@ function validateScript(
 ): asserts script is NonNullable<ScriptData> {
   validator.assertType((v) => v.assertObject<CallScriptData & CodeScriptData>({
     value: script,
-    valueName: script.name ?? 'script',
+    valueName: `Script '${script.name}'` ?? 'Script',
     allowedProperties: [
       'name', 'recommend', 'code', 'revertCode', 'call', 'docs',
     ],
@@ -132,14 +133,6 @@ interface ScriptParserUtilities {
   readonly parseDocs: DocsParser;
 }
 
-export type ScriptFactory = (
-  ...parameters: ConstructorParameters<typeof CollectionScript>
-) => Script;
-
-const createScript: ScriptFactory = (...parameters) => {
-  return new CollectionScript(...parameters);
-};
-
 const DefaultUtilities: ScriptParserUtilities = {
   levelParser: createEnumParser(RecommendationLevel),
   createScript,

src/application/Parser/Executable/Script/Validation/CodeValidator.ts

@@ -1,3 +1,4 @@
+import { splitTextIntoLines } from '@/application/Common/Text/SplitTextIntoLines';
 import type { ICodeLine } from './ICodeLine';
 import type { ICodeValidationRule, IInvalidCodeLine } from './ICodeValidationRule';
 import type { ICodeValidator } from './ICodeValidator';
@@ -24,12 +25,11 @@ export class CodeValidator implements ICodeValidator {
 }
 
 function extractLines(code: string): ICodeLine[] {
-  return code
+  const lines = splitTextIntoLines(code);
-    .split(/\r\n|\r|\n/)
+  return lines.map((lineText, lineIndex): ICodeLine => ({
-    .map((lineText, lineIndex): ICodeLine => ({
+    index: lineIndex + 1,
-      index: lineIndex + 1,
+    text: lineText,
-      text: lineText,
+  }));
-    }));
 }
 
 function printLines(

src/application/Parser/ScriptingDefinition/ScriptingDefinitionParser.ts

@@ -37,7 +37,7 @@ function validateData(
 ): void {
   validator.assertObject({
     value: data,
-    valueName: 'scripting definition',
+    valueName: 'Scripting definition',
     allowedProperties: ['language', 'fileExtension', 'startCode', 'endCode'],
   });
 }

src/application/Repository/Repository.ts

@@ -1,17 +1,19 @@
-import type { IEntity } from '@/infrastructure/Entity/IEntity';
+import type { RepositoryEntity } from './RepositoryEntity';
 
-export interface ReadonlyRepository<TKey, TEntity extends IEntity<TKey>> {
+type EntityId = RepositoryEntity['id'];
+
+export interface ReadonlyRepository<TEntity extends RepositoryEntity> {
   readonly length: number;
   getItems(predicate?: (entity: TEntity) => boolean): readonly TEntity[];
-  getById(id: TKey): TEntity;
+  getById(id: EntityId): TEntity;
-  exists(id: TKey): boolean;
+  exists(id: EntityId): boolean;
 }
 
-export interface MutableRepository<TKey, TEntity extends IEntity<TKey>> {
+export interface MutableRepository<TEntity extends RepositoryEntity> {
   addItem(item: TEntity): void;
   addOrUpdateItem(item: TEntity): void;
-  removeItem(id: TKey): void;
+  removeItem(id: EntityId): void;
 }
 
-export interface Repository<TKey, TEntity extends IEntity<TKey>>
+export interface Repository<TEntity extends RepositoryEntity>
-  extends ReadonlyRepository<TKey, TEntity>, MutableRepository<TKey, TEntity> { }
+  extends ReadonlyRepository<TEntity>, MutableRepository<TEntity> { }

src/application/Repository/RepositoryEntity.ts

@@ -0,0 +1,6 @@
+/** Aggregate root */
+export type RepositoryEntityId = string;
+
+export interface RepositoryEntity {
+  readonly id: RepositoryEntityId;
+}

src/application/collections/.schema.yaml

@@ -69,6 +69,12 @@ definitions:
       - $ref: '#/definitions/CodeScript'
       - $ref: '#/definitions/CallScript'
 
+  RecommendationLevel:
+    oneOf:
+    - type: string
+      enum: [standard, strict]
+    - type: 'null'
+
   ScriptDefinition:
     type: object
     allOf:
@@ -78,8 +84,7 @@ definitions:
       name:
         type: string
       recommend:
-        type: string
+        $ref: '#/definitions/RecommendationLevel'
-        enum: [standard, strict]
 
   CodeScript:
     type: object

src/application/collections/macos.yaml

@@ -1800,7 +1800,7 @@ actions:
                             # References for spctl --master-disable
                                 - https://web.archive.org/web/20240523173608/https://www.manpagez.com/man/8/spctl/
                             # References for /var/db/SystemPolicy-prefs.plist
-                                - https://krypted.com/mac-security/manage-gatekeeper-from-the-command-line-in-mountain-lion/
+                                - https://web.archive.org/web/20240810103202/https://krypted.com/mac-security/manage-gatekeeper-from-the-command-line-in-mountain-lion/
                                 - https://community.jamf.com/t5/jamf-pro/users-can-t-change-password-greyed-out/m-p/54228
                         code: |-
                             os_major_ver=$(sw_vers -productVersion | awk -F "." '{print $1}')
@@ -1842,10 +1842,10 @@ actions:
                             fi
             -
                 name: Disable library validation entitlement (library signature validation)
-                docs:
+                docs: |-
-                    - https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_cs_disable-library-validation
+                    - [Disable Library Validation Entitlement | Apple Developer Documentation | developer.apple.com](https://archive.ph/2024.07.19-101811/https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_cs_disable-library-validation)
-                    - https://www.macenhance.com/docs/general/sip-library-validation.html
+                    - [Forbidden Commands to Speed Up macOS | www.naut.ca](https://web.archive.org/web/20240625020749/https://www.naut.ca/blog/2020/11/13/forbidden-commands-to-liberate-macos/)
-                    - https://www.naut.ca/blog/2020/11/13/forbidden-commands-to-liberate-macos/
+                    - [macEnhance | macEnhance.com](https://web.archive.org/web/20220622212008/https://www.macenhance.com/docs/general/sip-library-validation.html)
                 code: sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist 'DisableLibraryValidation' -bool true
                 revertCode: sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist 'DisableLibraryValidation' -bool false
             -

src/domain/Application.ts

@@ -1,6 +1,6 @@
 import { OperatingSystem } from './OperatingSystem';
 import type { IApplication } from './IApplication';
-import type { ICategoryCollection } from './ICategoryCollection';
+import type { ICategoryCollection } from './Collection/ICategoryCollection';
 import type { ProjectDetails } from './Project/ProjectDetails';
 
 export class Application implements IApplication {

src/domain/Collection/CategoryCollection.ts

@@ -1,11 +1,13 @@
 import { getEnumValues, assertInRange } from '@/application/Common/Enum';
-import { RecommendationLevel } from './Executables/Script/RecommendationLevel';
+import { RecommendationLevel } from '../Executables/Script/RecommendationLevel';
-import { OperatingSystem } from './OperatingSystem';
+import { OperatingSystem } from '../OperatingSystem';
-import type { IEntity } from '../infrastructure/Entity/IEntity';
+import { validateCategoryCollection } from './Validation/CompositeCategoryCollectionValidator';
-import type { Category } from './Executables/Category/Category';
+import type { ExecutableId } from '../Executables/Identifiable';
-import type { Script } from './Executables/Script/Script';
+import type { Category } from '../Executables/Category/Category';
-import type { IScriptingDefinition } from './IScriptingDefinition';
+import type { Script } from '../Executables/Script/Script';
+import type { IScriptingDefinition } from '../IScriptingDefinition';
 import type { ICategoryCollection } from './ICategoryCollection';
+import type { CategoryCollectionValidator } from './Validation/CategoryCollectionValidator';
 
 export class CategoryCollection implements ICategoryCollection {
   public readonly os: OperatingSystem;
@@ -22,22 +24,24 @@ export class CategoryCollection implements ICategoryCollection {
 
   constructor(
     parameters: CategoryCollectionInitParameters,
+    validate: CategoryCollectionValidator = validateCategoryCollection,
   ) {
     this.os = parameters.os;
     this.actions = parameters.actions;
     this.scripting = parameters.scripting;
 
     this.queryable = makeQueryable(this.actions);
-    assertInRange(this.os, OperatingSystem);
+    validate({
-    ensureValid(this.queryable);
+      allScripts: this.queryable.allScripts,
-    ensureNoDuplicates(this.queryable.allCategories);
+      allCategories: this.queryable.allCategories,
-    ensureNoDuplicates(this.queryable.allScripts);
+      operatingSystem: this.os,
+    });
   }
 
-  public getCategory(categoryId: number): Category {
+  public getCategory(executableId: ExecutableId): Category {
-    const category = this.queryable.allCategories.find((c) => c.id === categoryId);
+    const category = this.queryable.allCategories.find((c) => c.executableId === executableId);
     if (!category) {
-      throw new Error(`Missing category with ID: "${categoryId}"`);
+      throw new Error(`Missing category with ID: "${executableId}"`);
     }
     return category;
   }
@@ -48,10 +52,10 @@ export class CategoryCollection implements ICategoryCollection {
     return scripts ?? [];
   }
 
-  public getScript(scriptId: string): Script {
+  public getScript(executableId: ExecutableId): Script {
-    const script = this.queryable.allScripts.find((s) => s.id === scriptId);
+    const script = this.queryable.allScripts.find((s) => s.executableId === executableId);
     if (!script) {
-      throw new Error(`missing script: ${scriptId}`);
+      throw new Error(`Missing script: ${executableId}`);
     }
     return script;
   }
@@ -65,21 +69,6 @@ export class CategoryCollection implements ICategoryCollection {
   }
 }
 
-function ensureNoDuplicates<TKey>(entities: ReadonlyArray<IEntity<TKey>>) {
-  const isUniqueInArray = (id: TKey, index: number, array: readonly TKey[]) => array
-    .findIndex((otherId) => otherId === id) !== index;
-  const duplicatedIds = entities
-    .map((entity) => entity.id)
-    .filter((id, index, array) => !isUniqueInArray(id, index, array))
-    .filter(isUniqueInArray);
-  if (duplicatedIds.length > 0) {
-    const duplicatedIdsText = duplicatedIds.map((id) => `"${id}"`).join(',');
-    throw new Error(
-      `Duplicate entities are detected with following id(s): ${duplicatedIdsText}`,
-    );
-  }
-}
-
 export interface CategoryCollectionInitParameters {
   readonly os: OperatingSystem;
   readonly actions: ReadonlyArray<Category>;
@@ -92,35 +81,12 @@ interface QueryableCollection {
   readonly scriptsByLevel: Map<RecommendationLevel, readonly Script[]>;
 }
 
-function ensureValid(application: QueryableCollection) {
+function flattenCategoryHierarchy(
-  ensureValidCategories(application.allCategories);
-  ensureValidScripts(application.allScripts);
-}
-
-function ensureValidCategories(allCategories: readonly Category[]) {
-  if (!allCategories.length) {
-    throw new Error('must consist of at least one category');
-  }
-}
-
-function ensureValidScripts(allScripts: readonly Script[]) {
-  if (!allScripts.length) {
-    throw new Error('must consist of at least one script');
-  }
-  const missingRecommendationLevels = getEnumValues(RecommendationLevel)
-    .filter((level) => allScripts.every((script) => script.level !== level));
-  if (missingRecommendationLevels.length > 0) {
-    throw new Error('none of the scripts are recommended as'
-      + ` "${missingRecommendationLevels.map((level) => RecommendationLevel[level]).join(', "')}".`);
-  }
-}
-
-function flattenApplication(
   categories: ReadonlyArray<Category>,
 ): [Category[], Script[]] {
   const [subCategories, subScripts] = (categories || [])
     // Parse children
-    .map((category) => flattenApplication(category.subCategories))
+    .map((category) => flattenCategoryHierarchy(category.subcategories))
     // Flatten results
     .reduce(([previousCategories, previousScripts], [currentCategories, currentScripts]) => {
       return [
@@ -143,7 +109,7 @@ function flattenApplication(
 function makeQueryable(
   actions: ReadonlyArray<Category>,
 ): QueryableCollection {
-  const flattened = flattenApplication(actions);
+  const flattened = flattenCategoryHierarchy(actions);
   return {
     allCategories: flattened[0],
     allScripts: flattened[1],

src/domain/Collection/ICategoryCollection.ts

@@ -3,6 +3,7 @@ import { OperatingSystem } from '@/domain/OperatingSystem';
 import { RecommendationLevel } from '@/domain/Executables/Script/RecommendationLevel';
 import type { Script } from '@/domain/Executables/Script/Script';
 import type { Category } from '@/domain/Executables/Category/Category';
+import type { ExecutableId } from '../Executables/Identifiable';
 
 export interface ICategoryCollection {
   readonly scripting: IScriptingDefinition;
@@ -12,8 +13,8 @@ export interface ICategoryCollection {
   readonly actions: ReadonlyArray<Category>;
 
   getScriptsByLevel(level: RecommendationLevel): ReadonlyArray<Script>;
-  getCategory(categoryId: number): Category;
+  getCategory(categoryId: ExecutableId): Category;
-  getScript(scriptId: string): Script;
+  getScript(scriptId: ExecutableId): Script;
   getAllScripts(): ReadonlyArray<Script>;
   getAllCategories(): ReadonlyArray<Category>;
 }

src/domain/Collection/Validation/CategoryCollectionValidator.ts

@@ -0,0 +1,15 @@
+import type { Category } from '@/domain/Executables/Category/Category';
+import type { Script } from '@/domain/Executables/Script/Script';
+import type { OperatingSystem } from '@/domain/OperatingSystem';
+
+export interface CategoryCollectionValidationContext {
+  readonly allScripts: readonly Script[];
+  readonly allCategories: readonly Category[];
+  readonly operatingSystem: OperatingSystem;
+}
+
+export interface CategoryCollectionValidator {
+  (
+    context: CategoryCollectionValidationContext,
+  ): void;
+}

src/domain/Collection/Validation/CompositeCategoryCollectionValidator.ts

@@ -0,0 +1,33 @@
+import { ensurePresenceOfAtLeastOneScript } from './Rules/EnsurePresenceOfAtLeastOneScript';
+import { ensurePresenceOfAtLeastOneCategory } from './Rules/EnsurePresenceOfAtLeastOneCategory';
+import { ensureUniqueIdsAcrossExecutables } from './Rules/EnsureUniqueIdsAcrossExecutables';
+import { ensureKnownOperatingSystem } from './Rules/EnsureKnownOperatingSystem';
+import type { CategoryCollectionValidationContext, CategoryCollectionValidator } from './CategoryCollectionValidator';
+
+export type CompositeCategoryCollectionValidator = CategoryCollectionValidator & {
+  (
+    ...args: [
+      ...Parameters<CategoryCollectionValidator>,
+      (readonly CategoryCollectionValidator[])?,
+    ]
+  ): void;
+};
+
+export const validateCategoryCollection: CompositeCategoryCollectionValidator = (
+  context: CategoryCollectionValidationContext,
+  validators: readonly CategoryCollectionValidator[] = DefaultValidators,
+) => {
+  if (!validators.length) {
+    throw new Error('No validators provided.');
+  }
+  for (const validate of validators) {
+    validate(context);
+  }
+};
+
+const DefaultValidators: readonly CategoryCollectionValidator[] = [
+  ensureKnownOperatingSystem,
+  ensurePresenceOfAtLeastOneScript,
+  ensurePresenceOfAtLeastOneCategory,
+  ensureUniqueIdsAcrossExecutables,
+];

src/domain/Collection/Validation/Rules/EnsureKnownOperatingSystem.ts

@@ -0,0 +1,9 @@
+import { assertInRange } from '@/application/Common/Enum';
+import { OperatingSystem } from '@/domain/OperatingSystem';
+import type { CategoryCollectionValidator } from '../CategoryCollectionValidator';
+
+export const ensureKnownOperatingSystem: CategoryCollectionValidator = (
+  context,
+) => {
+  assertInRange(context.operatingSystem, OperatingSystem);
+};

src/domain/Collection/Validation/Rules/EnsurePresenceOfAllRecommendationLevels.ts

@@ -0,0 +1,35 @@
+import { getEnumValues } from '@/application/Common/Enum';
+import { RecommendationLevel } from '@/domain/Executables/Script/RecommendationLevel';
+import type { Script } from '@/domain/Executables/Script/Script';
+import type { CategoryCollectionValidator } from '../CategoryCollectionValidator';
+
+export const ensurePresenceOfAllRecommendationLevels: CategoryCollectionValidator = (
+  context,
+) => {
+  const unrepresentedRecommendationLevels = getUnrepresentedRecommendationLevels(
+    context.allScripts,
+  );
+  if (unrepresentedRecommendationLevels.length === 0) {
+    return;
+  }
+  const formattedRecommendationLevels = unrepresentedRecommendationLevels
+    .map((level) => getDisplayName(level))
+    .join(', ');
+  throw new Error(`Missing recommendation levels: ${formattedRecommendationLevels}.`);
+};
+
+function getUnrepresentedRecommendationLevels(
+  scripts: readonly Script[],
+): (RecommendationLevel | undefined)[] {
+  const expectedLevels = [
+    undefined,
+    ...getEnumValues(RecommendationLevel),
+  ];
+  return expectedLevels.filter(
+    (level) => scripts.every((script) => script.level !== level),
+  );
+}
+
+function getDisplayName(level: RecommendationLevel | undefined): string {
+  return level === undefined ? 'None' : RecommendationLevel[level];
+}

src/domain/Collection/Validation/Rules/EnsurePresenceOfAtLeastOneCategory.ts

@@ -0,0 +1,9 @@
+import type { CategoryCollectionValidator } from '../CategoryCollectionValidator';
+
+export const ensurePresenceOfAtLeastOneCategory: CategoryCollectionValidator = (
+  context,
+) => {
+  if (!context.allCategories.length) {
+    throw new Error('Collection must have at least one category');
+  }
+};

src/domain/Collection/Validation/Rules/EnsurePresenceOfAtLeastOneScript.ts

@@ -0,0 +1,9 @@
+import type { CategoryCollectionValidator } from '../CategoryCollectionValidator';
+
+export const ensurePresenceOfAtLeastOneScript: CategoryCollectionValidator = (
+  context,
+) => {
+  if (!context.allScripts.length) {
+    throw new Error('Collection must have at least one script');
+  }
+};

src/domain/Collection/Validation/Rules/EnsureUniqueIdsAcrossExecutables.ts

@@ -0,0 +1,43 @@
+import type { Identifiable } from '@/domain/Executables/Identifiable';
+import type { CategoryCollectionValidator } from '../CategoryCollectionValidator';
+
+export const ensureUniqueIdsAcrossExecutables: CategoryCollectionValidator = (
+  context,
+) => {
+  const allExecutables: readonly Identifiable[] = [
+    ...context.allCategories,
+    ...context.allScripts,
+  ];
+  ensureNoDuplicateIds(allExecutables);
+};
+
+function ensureNoDuplicateIds(
+  executables: readonly Identifiable[],
+) {
+  const duplicateExecutables = getExecutablesWithDuplicateIds(executables);
+  if (duplicateExecutables.length === 0) {
+    return;
+  }
+  const formattedDuplicateIds = duplicateExecutables.map(
+    (executable) => `"${executable.executableId}"`,
+  ).join(', ');
+  throw new Error(`Duplicate executable IDs found: ${formattedDuplicateIds}`);
+}
+
+function getExecutablesWithDuplicateIds(
+  executables: readonly Identifiable[],
+): Identifiable[] {
+  return executables
+    .filter(
+      (executable, index, array) => {
+        const otherIndex = array.findIndex(
+          (otherExecutable) => haveIdenticalIds(executable, otherExecutable),
+        );
+        return otherIndex !== index;
+      },
+    );
+}
+
+function haveIdenticalIds(first: Identifiable, second: Identifiable): boolean {
+  return first.executableId === second.executableId;
+}

src/domain/Executables/Category/Category.ts

@@ -1,10 +1,9 @@
 import type { Script } from '../Script/Script';
 import type { Executable } from '../Executable';
 
-export interface Category extends Executable<number> {
+export interface Category extends Executable {
-  readonly id: number;
   readonly name: string;
-  readonly subCategories: ReadonlyArray<Category>;
+  readonly subcategories: ReadonlyArray<Category>;
   readonly scripts: ReadonlyArray<Script>;
   includes(script: Script): boolean;
   getAllScriptsRecursively(): ReadonlyArray<Script>;

src/domain/Executables/Category/CategoryFactory.ts

@@ -1,29 +1,51 @@
-import { BaseEntity } from '@/infrastructure/Entity/BaseEntity';
+import type { Category } from '@/domain/Executables/Category/Category';
-import type { Category } from './Category';
+import type { Script } from '@/domain/Executables/Script/Script';
-import type { Script } from '../Script/Script';
+import type { ExecutableId } from '../Identifiable';
 
-export class CollectionCategory extends BaseEntity<number> implements Category {
+export type CategoryFactory = (
-  private allSubScripts?: ReadonlyArray<Script> = undefined;
+  parameters: CategoryInitParameters,
+) => Category;
+
+export interface CategoryInitParameters {
+  readonly executableId: ExecutableId;
+  readonly name: string;
+  readonly docs: ReadonlyArray<string>;
+  readonly subcategories: ReadonlyArray<Category>;
+  readonly scripts: ReadonlyArray<Script>;
+}
+
+export const createCategory: CategoryFactory = (
+  parameters,
+) => {
+  return new CollectionCategory(parameters);
+};
+
+class CollectionCategory implements Category {
+  public readonly executableId: ExecutableId;
 
   public readonly name: string;
 
   public readonly docs: ReadonlyArray<string>;
 
-  public readonly subCategories: ReadonlyArray<Category>;
+  public readonly subcategories: ReadonlyArray<Category>;
 
   public readonly scripts: ReadonlyArray<Script>;
 
+  private allSubScripts?: ReadonlyArray<Script> = undefined;
+
   constructor(parameters: CategoryInitParameters) {
-    super(parameters.id);
     validateParameters(parameters);
+    this.executableId = parameters.executableId;
     this.name = parameters.name;
     this.docs = parameters.docs;
-    this.subCategories = parameters.subcategories;
+    this.subcategories = parameters.subcategories;
     this.scripts = parameters.scripts;
   }
 
   public includes(script: Script): boolean {
-    return this.getAllScriptsRecursively().some((childScript) => childScript.id === script.id);
+    return this
+      .getAllScriptsRecursively()
+      .some((childScript) => childScript.executableId === script.executableId);
   }
 
   public getAllScriptsRecursively(): readonly Script[] {
@@ -34,22 +56,17 @@ export class CollectionCategory extends BaseEntity<number> implements Category {
   }
 }
 
-export interface CategoryInitParameters {
-  readonly id: number;
-  readonly name: string;
-  readonly docs: ReadonlyArray<string>;
-  readonly subcategories: ReadonlyArray<Category>;
-  readonly scripts: ReadonlyArray<Script>;
-}
-
 function parseScriptsRecursively(category: Category): ReadonlyArray<Script> {
   return [
     ...category.scripts,
-    ...category.subCategories.flatMap((c) => c.getAllScriptsRecursively()),
+    ...category.subcategories.flatMap((c) => c.getAllScriptsRecursively()),
   ];
 }
 
 function validateParameters(parameters: CategoryInitParameters) {
+  if (!parameters.executableId) {
+    throw new Error('missing ID');
+  }
   if (!parameters.name) {
     throw new Error('missing name');
   }

src/domain/Executables/Executable.ts

@@ -1,6 +1,6 @@
-import type { IEntity } from '@/infrastructure/Entity/IEntity';
 import type { Documentable } from './Documentable';
+import type { Identifiable } from './Identifiable';
 
-export interface Executable<TExecutableKey>
+export interface Executable
-  extends Documentable, IEntity<TExecutableKey> {
+  extends Documentable, Identifiable {
 }

src/domain/Executables/Identifiable.ts

@@ -0,0 +1,5 @@
+export type ExecutableId = string;
+
+export interface Identifiable {
+  readonly executableId: ExecutableId;
+}

src/domain/Executables/Script/Script.ts

@@ -3,7 +3,7 @@ import type { Executable } from '../Executable';
 import type { Documentable } from '../Documentable';
 import type { ScriptCode } from './Code/ScriptCode';
 
-export interface Script extends Executable<string>, Documentable {
+export interface Script extends Executable, Documentable {
   readonly name: string;
   readonly level?: RecommendationLevel;
   readonly code: ScriptCode;

src/domain/Executables/Script/ScriptFactory.ts

@@ -1,9 +1,27 @@
-import { BaseEntity } from '@/infrastructure/Entity/BaseEntity';
 import { RecommendationLevel } from './RecommendationLevel';
-import type { Script } from './Script';
 import type { ScriptCode } from './Code/ScriptCode';
+import type { Script } from './Script';
+import type { ExecutableId } from '../Identifiable';
+
+export interface ScriptInitParameters {
+  readonly executableId: ExecutableId;
+  readonly name: string;
+  readonly code: ScriptCode;
+  readonly docs: ReadonlyArray<string>;
+  readonly level?: RecommendationLevel;
+}
+
+export type ScriptFactory = (
+  parameters: ScriptInitParameters,
+) => Script;
+
+export const createScript: ScriptFactory = (parameters) => {
+  return new CollectionScript(parameters);
+};
+
+class CollectionScript implements Script {
+  public readonly executableId: ExecutableId;
 
-export class CollectionScript extends BaseEntity<string> implements Script {
   public readonly name: string;
 
   public readonly code: ScriptCode;
@@ -13,7 +31,7 @@ export class CollectionScript extends BaseEntity<string> implements Script {
   public readonly level?: RecommendationLevel;
 
   constructor(parameters: ScriptInitParameters) {
-    super(parameters.name);
+    this.executableId = parameters.executableId;
     this.name = parameters.name;
     this.code = parameters.code;
     this.docs = parameters.docs;
@@ -26,13 +44,6 @@ export class CollectionScript extends BaseEntity<string> implements Script {
   }
 }
 
-export interface ScriptInitParameters {
-  readonly name: string;
-  readonly code: ScriptCode;
-  readonly docs: ReadonlyArray<string>;
-  readonly level?: RecommendationLevel;
-}
-
 function validateLevel(level?: RecommendationLevel) {
   if (level !== undefined && !(level in RecommendationLevel)) {
     throw new Error(`invalid level: ${level}`);

src/domain/IApplication.ts

@@ -1,4 +1,4 @@
-import type { ICategoryCollection } from './ICategoryCollection';
+import type { ICategoryCollection } from './Collection/ICategoryCollection';
 import type { ProjectDetails } from './Project/ProjectDetails';
 import type { OperatingSystem } from './OperatingSystem';
 

src/infrastructure/Entity/BaseEntity.ts

@@ -1,14 +0,0 @@
-import { isNumber } from '@/TypeHelpers';
-import type { IEntity } from './IEntity';
-
-export abstract class BaseEntity<TId> implements IEntity<TId> {
-  protected constructor(public id: TId) {
-    if (!isNumber(id) && !id) {
-      throw new Error('Id cannot be null or empty');
-    }
-  }
-
-  public equals(otherId: TId): boolean {
-    return this.id === otherId;
-  }
-}

src/infrastructure/Entity/IEntity.ts

@@ -1,5 +0,0 @@
-/** Aggregate root */
-export interface IEntity<TId> {
-  id: TId;
-  equals(other: TId): boolean;
-}

src/infrastructure/Repository/InMemoryRepository.ts

@@ -1,12 +1,15 @@
 import type { Repository } from '../../application/Repository/Repository';
-import type { IEntity } from '../Entity/IEntity';
+import type { RepositoryEntity, RepositoryEntityId } from '../../application/Repository/RepositoryEntity';
 
-export class InMemoryRepository<TKey, TEntity extends IEntity<TKey>>
+export class InMemoryRepository<TEntity extends RepositoryEntity>
-implements Repository<TKey, TEntity> {
+implements Repository<TEntity> {
   private readonly items: TEntity[];
 
-  constructor(items?: TEntity[]) {
+  constructor(items?: readonly TEntity[]) {
-    this.items = items ?? new Array<TEntity>();
+    this.items = new Array<TEntity>();
+    if (items) {
+      this.items.push(...items);
+    }
   }
 
   public get length(): number {
@@ -17,7 +20,7 @@ implements Repository<TKey, TEntity> {
     return predicate ? this.items.filter(predicate) : this.items;
   }
 
-  public getById(id: TKey): TEntity {
+  public getById(id: RepositoryEntityId): TEntity {
     const items = this.getItems((entity) => entity.id === id);
     if (!items.length) {
       throw new Error(`missing item: ${id}`);
@@ -39,7 +42,7 @@ implements Repository<TKey, TEntity> {
     this.items.push(item);
   }
 
-  public removeItem(id: TKey): void {
+  public removeItem(id: RepositoryEntityId): void {
     const index = this.items.findIndex((item) => item.id === id);
     if (index === -1) {
       throw new Error(`Cannot remove (id: ${id}) as it does not exist`);
@@ -47,7 +50,7 @@ implements Repository<TKey, TEntity> {
     this.items.splice(index, 1);
   }
 
-  public exists(id: TKey): boolean {
+  public exists(id: RepositoryEntityId): boolean {
     const index = this.items.findIndex((item) => item.id === id);
     return index !== -1;
   }

src/presentation/assets/styles/_mixins.scss

@@ -29,9 +29,9 @@
   for interactive elements during hover or touch interactions.
 */
 @mixin clickable($cursor: 'pointer') {
-  cursor: #{$cursor};
   user-select: none;
   -webkit-tap-highlight-color: transparent; // Removes blue tap highlight
+  cursor: #{$cursor};
 }
 
 @mixin fade-transition($name) {
@@ -120,13 +120,13 @@
 }
 
 @mixin set-property-ch-value-with-fallback($property, $value-in-ch) {
-  @supports (width: 1ch) {
+  // For browsers that do not support `ch` unit (e.g., Opera Mini):
-    #{$property}: #{$value-in-ch}ch;
-  }
-  // For browsers that does not support `ch` unit (e.g., Opera Mini):
   $estimated-width-per-character-in-em: calc(1em / 2); // 1 character is approximately half the font size
   $calculated-width-in-em: calc(#{$estimated-width-per-character-in-em} * #{$value-in-ch});
   #{$property}: $calculated-width-in-em;
+  @supports (width: 1ch) {
+    #{$property}: #{$value-in-ch}ch; // Override `em` value if `ch` is supported.
+  }
 }
 
 @mixin base-font-style {

src/presentation/components/App.vue

@@ -78,15 +78,17 @@ function getOptionalDevToolkitComponent(): Component | undefined {
   margin-right: auto;
   margin-left: auto;
   max-width: 1600px;
+
   .app__wrapper {
+    display:flex;
+    flex-direction: column;
+
     background-color: $color-surface;
     color: $color-on-surface;
     box-shadow: 0 0 5px 0 rgba(0, 0, 0, 0.06);
 
     @include responsive-spacing;
 
-    display:flex;
-    flex-direction: column;
     .app__row {
       margin-bottom: $spacing-absolute-large;
     }

src/presentation/components/Code/CodeButtons/IconButton.vue

@@ -79,12 +79,12 @@ export default defineComponent({
   box-shadow: 0 3px 9px $color-primary-darkest;
   border-radius: 4px;
 
+  @include clickable;
+
   .button__icon {
     font-size: $font-size-absolute-x-large;
   }
 
-  @include clickable;
-
   @include hover-or-touch {
     background: $color-surface;
     box-shadow: 0px 2px 10px 5px $color-secondary;

src/presentation/components/Scripts/Menu/Recommendation/RecommendationDocumentation.vue

@@ -110,8 +110,9 @@ export default defineComponent({
   @include apply-icon-color($color-danger);
 }
 .recommendation {
+  align-items: center;
+
   @include horizontal-stack;
   @include apply-icon-color($color-caution);
-  align-items: center;
 }
 </style>

src/presentation/components/Scripts/Menu/Recommendation/RecommendationStatusHandler.ts

@@ -1,7 +1,7 @@
 import type { Script } from '@/domain/Executables/Script/Script';
 import { RecommendationLevel } from '@/domain/Executables/Script/RecommendationLevel';
 import { scrambledEqual } from '@/application/Common/Array';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { ReadonlyScriptSelection, ScriptSelection } from '@/application/Context/State/Selection/Script/ScriptSelection';
 import type { SelectedScript } from '@/application/Context/State/Selection/Script/SelectedScript';
 import { RecommendationStatusType } from './RecommendationStatusType';
@@ -99,6 +99,6 @@ function areAllSelected(
   if (expectedScripts.length < selectedScriptIds.length) {
     return false;
   }
-  const expectedScriptIds = expectedScripts.map((script) => script.id);
+  const expectedScriptIds = expectedScripts.map((script) => script.executableId);
   return scrambledEqual(selectedScriptIds, expectedScriptIds);
 }

src/presentation/components/Scripts/Menu/Recommendation/TheRecommendationSelector.vue

@@ -90,7 +90,7 @@ import {
 } from 'vue';
 import { injectKey } from '@/presentation/injectionSymbols';
 import TooltipWrapper from '@/presentation/components/Shared/TooltipWrapper.vue';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import MenuOptionList from '../MenuOptionList.vue';
 import MenuOptionListItem from '../MenuOptionListItem.vue';
 import { setCurrentRecommendationStatus, getCurrentRecommendationStatus } from './RecommendationStatusHandler';

src/presentation/components/Scripts/Menu/Revert/RevertStatusDocumentation.vue

@@ -68,9 +68,11 @@ export default defineComponent({
   @include horizontal-stack;
   @include apply-icon-color($color-caution);
 }
+
 .description {
+  align-items: center;
+
   @include horizontal-stack;
   @include apply-icon-color($color-success);
-  align-items: center;
 }
 </style>

src/presentation/components/Scripts/Slider/SliderHandle.vue

@@ -58,8 +58,19 @@ $color-hover    : $color-primary;
 $cursor         : v-bind(cursorCssValue);
 
 .handle {
+  cursor: $cursor;
+
   @include reset-button;
+
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+
+  margin-right: $spacing-absolute-small;
+  margin-left: $spacing-absolute-small;
+
   @include clickable($cursor: $cursor);
+
   @include hover-or-touch {
     .line {
       background: $color-hover;
@@ -68,11 +79,7 @@ $cursor         : v-bind(cursorCssValue);
       color: $color-hover;
     }
   }
-  cursor: $cursor;
 
-  display: flex;
-  flex-direction: column;
-  align-items: center;
   .line {
     flex: 1;
     background: $color;
@@ -81,7 +88,5 @@ $cursor         : v-bind(cursorCssValue);
   .icon {
     color: $color;
   }
-  margin-right: $spacing-absolute-small;
-  margin-left: $spacing-absolute-small;
 }
 </style>

src/presentation/components/Scripts/Slider/UseDragHandler.ts

@@ -3,6 +3,7 @@ import {
 } from 'vue';
 import { throttle } from '@/application/Common/Timing/Throttle';
 import type { Ref } from 'vue';
+import type { LifecycleHook } from '../../Shared/Hooks/Common/LifecycleHook';
 
 const ThrottleInMs = 15;
 
@@ -10,6 +11,7 @@ export function useDragHandler(
   draggableElementRef: Readonly<Ref<HTMLElement | undefined>>,
   dragDomModifier: DragDomModifier = new GlobalDocumentDragDomModifier(),
   throttler = throttle,
+  onTeardown: LifecycleHook = onUnmounted,
 ) {
   const displacementX = ref(0);
   const isDragging = ref(false);
@@ -52,7 +54,7 @@ export function useDragHandler(
     element.addEventListener('pointerdown', startDrag);
   }
 
-  onUnmounted(() => {
+  onTeardown(() => {
     stopDrag();
   });
 

src/presentation/components/Scripts/Slider/UseGlobalCursor.ts

@@ -1,9 +1,11 @@
 import { watch, type Ref, onUnmounted } from 'vue';
+import type { LifecycleHook } from '../../Shared/Hooks/Common/LifecycleHook';
 
 export function useGlobalCursor(
   isActive: Readonly<Ref<boolean>>,
   cursorCssValue: string,
   documentAccessor: CursorStyleDomModifier = new GlobalDocumentCursorStyleDomModifier(),
+  onTeardown: LifecycleHook = onUnmounted,
 ) {
   const cursorStyle = createCursorStyle(cursorCssValue, documentAccessor);
 
@@ -15,7 +17,7 @@ export function useGlobalCursor(
     }
   });
 
-  onUnmounted(() => {
+  onTeardown(() => {
     documentAccessor.removeElement(cursorStyle);
   });
 }

src/presentation/components/Scripts/View/Cards/CardList.vue

@@ -44,6 +44,7 @@ import {
 } from 'vue';
 import { injectKey } from '@/presentation/injectionSymbols';
 import SizeObserver from '@/presentation/components/Shared/SizeObserver.vue';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import { hasDirective } from './NonCollapsingDirective';
 import CardListItem from './CardListItem.vue';
 
@@ -58,12 +59,12 @@ export default defineComponent({
 
     const width = ref<number | undefined>();
 
-    const categoryIds = computed<readonly number[]>(
+    const categoryIds = computed<readonly ExecutableId[]>(
-      () => currentState.value.collection.actions.map((category) => category.id),
+      () => currentState.value.collection.actions.map((category) => category.executableId),
     );
-    const activeCategoryId = ref<number | undefined>(undefined);
+    const activeCategoryId = ref<ExecutableId | undefined>(undefined);
 
-    function onSelected(categoryId: number, isExpanded: boolean) {
+    function onSelected(categoryId: ExecutableId, isExpanded: boolean) {
       activeCategoryId.value = isExpanded ? categoryId : undefined;
     }
 

src/presentation/components/Scripts/View/Cards/CardListItem.vue

@@ -56,12 +56,14 @@
 <script lang="ts">
 import {
   defineComponent, computed, shallowRef,
+  type PropType,
 } from 'vue';
 import AppIcon from '@/presentation/components/Shared/Icon/AppIcon.vue';
 import FlatButton from '@/presentation/components/Shared/FlatButton.vue';
 import { injectKey } from '@/presentation/injectionSymbols';
 import ScriptsTree from '@/presentation/components/Scripts/View/Tree/ScriptsTree.vue';
 import { sleep } from '@/infrastructure/Threading/AsyncSleep';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import CardSelectionIndicator from './CardSelectionIndicator.vue';
 import CardExpandTransition from './CardExpandTransition.vue';
 import CardExpansionArrow from './CardExpansionArrow.vue';
@@ -77,11 +79,11 @@ export default defineComponent({
   },
   props: {
     categoryId: {
-      type: Number,
+      type: String as PropType<ExecutableId>,
       required: true,
     },
     activeCategoryId: {
-      type: Number,
+      type: String as PropType<ExecutableId>,
       default: undefined,
     },
   },

src/presentation/components/Scripts/View/Cards/CardSelectionIndicator.vue

@@ -12,11 +12,12 @@
 </template>
 
 <script lang="ts">
-import { defineComponent, computed } from 'vue';
+import { defineComponent, computed, type PropType } from 'vue';
 import AppIcon from '@/presentation/components/Shared/Icon/AppIcon.vue';
 import { injectKey } from '@/presentation/injectionSymbols';
 import type { Category } from '@/domain/Executables/Category/Category';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 
 export default defineComponent({
   components: {
@@ -24,7 +25,7 @@ export default defineComponent({
   },
   props: {
     categoryId: {
-      type: Number,
+      type: String as PropType<ExecutableId>,
       required: true,
     },
   },

src/presentation/components/Scripts/View/Tree/NodeContent/Documentation/DocumentableNode.vue

@@ -78,17 +78,20 @@ export default defineComponent({
     }
   }
   .docs {
+    color: $color-on-primary;
     background: $color-primary-darkest;
+
     margin-left: $spacing-absolute-small;
     margin-top: $spacing-relative-x-small;
-    color: $color-on-primary;
-    text-transform: none;
     padding: $spacing-absolute-medium;
+
+    text-transform: none;
+    cursor: auto;
+    user-select: text;
+
     &-collapsed {
       display: none;
     }
-    cursor: auto;
-    user-select: text;
   }
 }
 </style>

src/presentation/components/Scripts/View/Tree/NodeContent/Documentation/DocumentationText.vue

@@ -8,6 +8,7 @@
 
 <script lang="ts">
 import { defineComponent, type PropType, computed } from 'vue';
+import { splitTextIntoLines } from '@/application/Common/Text/SplitTextIntoLines';
 import MarkdownText from '../Markdown/MarkdownText.vue';
 
 export default defineComponent({
@@ -43,7 +44,7 @@ function formatAsMarkdownListItem(content: string): string {
   if (content.length === 0) {
     throw new Error('missing content');
   }
-  const lines = content.split(/\r\n|\r|\n/);
+  const lines = splitTextIntoLines(content);
   return `- ${lines[0]}${lines.slice(1)
     .map((line) => `\n  ${line}`)
     .join()}`;
@@ -61,3 +62,4 @@ function formatAsMarkdownListItem(content: string): string {
   font-size: $font-size-absolute-normal;
 }
 </style>
+@/application/Text/SplitTextIntoLines

src/presentation/components/Scripts/View/Tree/NodeContent/NodeMetadata.ts

@@ -1,10 +1,12 @@
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+
 export enum NodeType {
   Script,
   Category,
 }
 
 export interface NodeMetadata {
-  readonly id: string;
+  readonly executableId: ExecutableId;
   readonly text: string;
   readonly isReversible: boolean;
   readonly docs: ReadonlyArray<string>;

src/presentation/components/Scripts/View/Tree/NodeContent/RevertToggle.vue

@@ -12,7 +12,7 @@ import {
 } from 'vue';
 import { injectKey } from '@/presentation/injectionSymbols';
 import type { NodeMetadata } from '@/presentation/components/Scripts/View/Tree/NodeContent/NodeMetadata';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { getReverter } from './Reverter/ReverterFactory';
 import ToggleSwitch from './ToggleSwitch.vue';
 import type { Reverter } from './Reverter/Reverter';

src/presentation/components/Scripts/View/Tree/NodeContent/Reverter/CategoryReverter.ts

@@ -1,17 +1,19 @@
 import type { UserSelection } from '@/application/Context/State/Selection/UserSelection';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { SelectedScript } from '@/application/Context/State/Selection/Script/SelectedScript';
-import { getCategoryId } from '../../TreeViewAdapter/CategoryNodeMetadataConverter';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+import { createExecutableIdFromNodeId } from '../../TreeViewAdapter/CategoryNodeMetadataConverter';
 import { ScriptReverter } from './ScriptReverter';
 import type { Reverter } from './Reverter';
+import type { TreeNodeId } from '../../TreeView/Node/TreeNode';
 
 export class CategoryReverter implements Reverter {
-  private readonly categoryId: number;
+  private readonly categoryId: ExecutableId;
 
   private readonly scriptReverters: ReadonlyArray<ScriptReverter>;
 
-  constructor(nodeId: string, collection: ICategoryCollection) {
+  constructor(nodeId: TreeNodeId, collection: ICategoryCollection) {
-    this.categoryId = getCategoryId(nodeId);
+    this.categoryId = createExecutableIdFromNodeId(nodeId);
     this.scriptReverters = createScriptReverters(this.categoryId, collection);
   }
 
@@ -37,12 +39,12 @@ export class CategoryReverter implements Reverter {
 }
 
 function createScriptReverters(
-  categoryId: number,
+  categoryId: ExecutableId,
   collection: ICategoryCollection,
 ): ScriptReverter[] {
   const category = collection.getCategory(categoryId);
   const scripts = category
     .getAllScriptsRecursively()
     .filter((script) => script.canRevert());
-  return scripts.map((script) => new ScriptReverter(script.id));
+  return scripts.map((script) => new ScriptReverter(script.executableId));
 }

src/presentation/components/Scripts/View/Tree/NodeContent/Reverter/ReverterFactory.ts

@@ -1,15 +1,18 @@
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import { type NodeMetadata, NodeType } from '../NodeMetadata';
 import { ScriptReverter } from './ScriptReverter';
 import { CategoryReverter } from './CategoryReverter';
 import type { Reverter } from './Reverter';
 
-export function getReverter(node: NodeMetadata, collection: ICategoryCollection): Reverter {
+export function getReverter(
+  node: NodeMetadata,
+  collection: ICategoryCollection,
+): Reverter {
   switch (node.type) {
     case NodeType.Category:
-      return new CategoryReverter(node.id, collection);
+      return new CategoryReverter(node.executableId, collection);
     case NodeType.Script:
-      return new ScriptReverter(node.id);
+      return new ScriptReverter(node.executableId);
     default:
       throw new Error('Unknown script type');
   }

src/presentation/components/Scripts/View/Tree/NodeContent/Reverter/ScriptReverter.ts

@@ -1,13 +1,15 @@
 import type { UserSelection } from '@/application/Context/State/Selection/UserSelection';
 import type { SelectedScript } from '@/application/Context/State/Selection/Script/SelectedScript';
-import { getScriptId } from '../../TreeViewAdapter/CategoryNodeMetadataConverter';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+import { createExecutableIdFromNodeId } from '../../TreeViewAdapter/CategoryNodeMetadataConverter';
 import type { Reverter } from './Reverter';
+import type { TreeNodeId } from '../../TreeView/Node/TreeNode';
 
 export class ScriptReverter implements Reverter {
-  private readonly scriptId: string;
+  private readonly scriptId: ExecutableId;
 
-  constructor(nodeId: string) {
+  constructor(nodeId: TreeNodeId) {
-    this.scriptId = getScriptId(nodeId);
+    this.scriptId = createExecutableIdFromNodeId(nodeId);
   }
 
   public getState(selectedScripts: ReadonlyArray<SelectedScript>): boolean {

src/presentation/components/Scripts/View/Tree/ScriptsTree.vue

@@ -24,8 +24,9 @@
 </template>
 
 <script lang="ts">
-import { defineComponent, toRef } from 'vue';
+import { defineComponent, toRef, type PropType } from 'vue';
 import { injectKey } from '@/presentation/injectionSymbols';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
 import TreeView from './TreeView/TreeView.vue';
 import NodeContent from './NodeContent/NodeContent.vue';
 import { useTreeViewFilterEvent } from './TreeViewAdapter/UseTreeViewFilterEvent';
@@ -41,7 +42,7 @@ export default defineComponent({
   },
   props: {
     categoryId: {
-      type: [Number],
+      type: String as PropType<ExecutableId>,
       default: undefined,
     },
     hasTopPadding: {

src/presentation/components/Scripts/View/Tree/TreeView/Bindings/TreeInputNodeData.ts

@@ -1,5 +1,7 @@
+export type TreeInputNodeDataId = string;
+
 export interface TreeInputNodeData {
-  readonly id: string;
+  readonly id: TreeInputNodeDataId;
   readonly children?: readonly TreeInputNodeData[];
   readonly parent?: TreeInputNodeData | null;
   readonly data?: object;

src/presentation/components/Scripts/View/Tree/TreeView/Node/HierarchicalTreeNode.vue

@@ -56,7 +56,7 @@ import { useNodeState } from './UseNodeState';
 import LeafTreeNode from './LeafTreeNode.vue';
 import InteractableNode from './InteractableNode.vue';
 import type { TreeRoot } from '../TreeRoot/TreeRoot';
-import type { TreeNode } from './TreeNode';
+import type { TreeNode, TreeNodeId } from './TreeNode';
 import type { NodeRenderingStrategy } from '../Rendering/Scheduling/NodeRenderingStrategy';
 import type { PropType } from 'vue';
 
@@ -69,7 +69,7 @@ export default defineComponent({
   },
   props: {
     nodeId: {
-      type: String,
+      type: String as PropType<TreeNodeId>,
       required: true,
     },
     treeRoot: {
@@ -133,14 +133,14 @@ export default defineComponent({
 .expansible-node {
   display: flex;
   flex-direction: row;
+
+  align-items: center;
+
   .leaf-node {
     flex: 1; // Expands the node horizontally, allowing its content to utilize full width for child item alignment, such as icons and text.
     overflow: auto; // Prevents horizontal expansion of inner content (e.g., when a code block is shown)
   }
 
-  flex-direction: row;
-  align-items: center;
-
   .expand-collapse-caret {
     $caret-size: 24px;
     $padding-right: $spacing-absolute-small;

src/presentation/components/Scripts/View/Tree/TreeView/Node/InteractableNode.vue

@@ -18,13 +18,13 @@ import { useCurrentTreeNodes } from '../UseCurrentTreeNodes';
 import { useNodeState } from './UseNodeState';
 import { useKeyboardInteractionState } from './UseKeyboardInteractionState';
 import type { TreeRoot } from '../TreeRoot/TreeRoot';
-import type { TreeNode } from './TreeNode';
+import type { TreeNode, TreeNodeId } from './TreeNode';
 import type { PropType } from 'vue';
 
 export default defineComponent({
   props: {
     nodeId: {
-      type: String,
+      type: String as PropType<TreeNodeId>,
       required: true,
     },
     treeRoot: {

src/presentation/components/Scripts/View/Tree/TreeView/Node/LeafTreeNode.vue

@@ -28,7 +28,7 @@ import { defineComponent, computed, toRef } from 'vue';
 import { useCurrentTreeNodes } from '../UseCurrentTreeNodes';
 import NodeCheckbox from './NodeCheckbox.vue';
 import InteractableNode from './InteractableNode.vue';
-import type { TreeNode } from './TreeNode';
+import type { TreeNode, TreeNodeId } from './TreeNode';
 import type { TreeRoot } from '../TreeRoot/TreeRoot';
 import type { PropType } from 'vue';
 
@@ -39,7 +39,7 @@ export default defineComponent({
   },
   props: {
     nodeId: {
-      type: String,
+      type: String as PropType<TreeNodeId>,
       required: true,
     },
     treeRoot: {

src/presentation/components/Scripts/View/Tree/TreeView/Node/NodeCheckbox.vue

@@ -14,13 +14,13 @@ import { useCurrentTreeNodes } from '../UseCurrentTreeNodes';
 import { useNodeState } from './UseNodeState';
 import { TreeNodeCheckState } from './State/CheckState';
 import type { TreeRoot } from '../TreeRoot/TreeRoot';
-import type { TreeNode } from './TreeNode';
+import type { TreeNode, TreeNodeId } from './TreeNode';
 import type { PropType } from 'vue';
 
 export default defineComponent({
   props: {
     nodeId: {
-      type: String,
+      type: String as PropType<TreeNodeId>,
       required: true,
     },
     treeRoot: {

src/presentation/components/Scripts/View/Tree/TreeView/Node/TreeNode.ts

@@ -1,8 +1,10 @@
 import type { HierarchyAccess, HierarchyReader } from './Hierarchy/HierarchyAccess';
 import type { TreeNodeStateAccess, TreeNodeStateReader } from './State/StateAccess';
 
+export type TreeNodeId = string;
+
 export interface ReadOnlyTreeNode {
-  readonly id: string;
+  readonly id: TreeNodeId;
   readonly state: TreeNodeStateReader;
   readonly hierarchy: HierarchyReader;
   readonly metadata?: object;

src/presentation/components/Scripts/View/Tree/TreeView/Node/TreeNodeManager.ts

@@ -1,6 +1,6 @@
 import { TreeNodeHierarchy } from './Hierarchy/TreeNodeHierarchy';
 import { TreeNodeState } from './State/TreeNodeState';
-import type { TreeNode } from './TreeNode';
+import type { TreeNode, TreeNodeId } from './TreeNode';
 import type { TreeNodeStateAccess } from './State/StateAccess';
 import type { HierarchyAccess } from './Hierarchy/HierarchyAccess';
 
@@ -9,7 +9,7 @@ export class TreeNodeManager implements TreeNode {
 
   public readonly hierarchy: HierarchyAccess;
 
-  constructor(public readonly id: string, public readonly metadata?: object) {
+  constructor(public readonly id: TreeNodeId, public readonly metadata?: object) {
     if (!id) {
       throw new Error('missing id');
     }

src/presentation/components/Scripts/View/Tree/TreeView/TreeRoot/NodeCollection/Query/QueryableNodes.ts

@@ -1,15 +1,15 @@
-import type { ReadOnlyTreeNode, TreeNode } from '../../../Node/TreeNode';
+import type { ReadOnlyTreeNode, TreeNode, TreeNodeId } from '../../../Node/TreeNode';
 
 export interface ReadOnlyQueryableNodes {
   readonly rootNodes: readonly ReadOnlyTreeNode[];
   readonly flattenedNodes: readonly ReadOnlyTreeNode[];
 
-  getNodeById(id: string): ReadOnlyTreeNode;
+  getNodeById(nodeId: TreeNodeId): ReadOnlyTreeNode;
 }
 
 export interface QueryableNodes extends ReadOnlyQueryableNodes {
   readonly rootNodes: readonly TreeNode[];
   readonly flattenedNodes: readonly TreeNode[];
 
-  getNodeById(id: string): TreeNode;
+  getNodeById(nodeId: TreeNodeId): TreeNode;
 }

src/presentation/components/Scripts/View/Tree/TreeView/TreeRoot/NodeCollection/Query/TreeNodeNavigator.ts

@@ -1,5 +1,5 @@
 import type { QueryableNodes } from './QueryableNodes';
-import type { TreeNode } from '../../../Node/TreeNode';
+import type { TreeNode, TreeNodeId } from '../../../Node/TreeNode';
 
 export class TreeNodeNavigator implements QueryableNodes {
   public readonly flattenedNodes: readonly TreeNode[];
@@ -8,10 +8,10 @@ export class TreeNodeNavigator implements QueryableNodes {
     this.flattenedNodes = flattenNodes(rootNodes);
   }
 
-  public getNodeById(id: string): TreeNode {
+  public getNodeById(nodeId: TreeNodeId): TreeNode {
-    const foundNode = this.flattenedNodes.find((node) => node.id === id);
+    const foundNode = this.flattenedNodes.find((node) => node.id === nodeId);
     if (!foundNode) {
-      throw new Error(`Node could not be found: ${id}`);
+      throw new Error(`Node could not be found: ${nodeId}`);
     }
     return foundNode;
   }

src/presentation/components/Scripts/View/Tree/TreeView/TreeRoot/TreeRoot.vue

@@ -22,6 +22,7 @@ import {
 } from 'vue';
 import HierarchicalTreeNode from '../Node/HierarchicalTreeNode.vue';
 import { useCurrentTreeNodes } from '../UseCurrentTreeNodes';
+import { type TreeNodeId } from '../Node/TreeNode';
 import type { NodeRenderingStrategy } from '../Rendering/Scheduling/NodeRenderingStrategy';
 import type { TreeRoot } from './TreeRoot';
 import type { PropType } from 'vue';
@@ -43,7 +44,7 @@ export default defineComponent({
   setup(props) {
     const { nodes } = useCurrentTreeNodes(toRef(props, 'treeRoot'));
 
-    const renderedNodeIds = computed<string[]>(() => {
+    const renderedNodeIds = computed<TreeNodeId[]>(() => {
       return nodes
         .value
         .rootNodes

src/presentation/components/Scripts/View/Tree/TreeView/TreeView.vue

@@ -26,6 +26,7 @@ import { useLeafNodeCheckedStateUpdater } from './UseLeafNodeCheckedStateUpdater
 import { useAutoUpdateParentCheckState } from './UseAutoUpdateParentCheckState';
 import { useAutoUpdateChildrenCheckState } from './UseAutoUpdateChildrenCheckState';
 import { useGradualNodeRendering, type NodeRenderingControl } from './Rendering/UseGradualNodeRendering';
+import { type TreeNodeId } from './Node/TreeNode';
 import type { TreeNodeStateChangedEmittedEvent } from './Bindings/TreeNodeStateChangedEmittedEvent';
 import type { TreeInputNodeData } from './Bindings/TreeInputNodeData';
 import type { TreeViewFilterEvent } from './Bindings/TreeInputFilterEvent';
@@ -45,7 +46,7 @@ export default defineComponent({
       default: () => undefined,
     },
     selectedLeafNodeIds: {
-      type: Array as PropType<ReadonlyArray<string>>,
+      type: Array as PropType<ReadonlyArray<TreeNodeId>>,
       default: () => [],
     },
   },

src/presentation/components/Scripts/View/Tree/TreeViewAdapter/CategoryNodeMetadataConverter.ts

@@ -1,14 +1,17 @@
 import type { Category } from '@/domain/Executables/Category/Category';
-import type { ICategoryCollection } from '@/domain/ICategoryCollection';
+import type { ICategoryCollection } from '@/domain/Collection/ICategoryCollection';
 import type { Script } from '@/domain/Executables/Script/Script';
+import type { ExecutableId } from '@/domain/Executables/Identifiable';
+import type { Executable } from '@/domain/Executables/Executable';
 import { type NodeMetadata, NodeType } from '../NodeContent/NodeMetadata';
+import type { TreeNodeId } from '../TreeView/Node/TreeNode';
 
 export function parseAllCategories(collection: ICategoryCollection): NodeMetadata[] {
   return createCategoryNodes(collection.actions);
 }
 
 export function parseSingleCategory(
-  categoryId: number,
+  categoryId: ExecutableId,
   collection: ICategoryCollection,
 ): NodeMetadata[] {
   const category = collection.getCategory(categoryId);
@@ -16,27 +19,19 @@ export function parseSingleCategory(
   return tree;
 }
 
-export function getScriptNodeId(script: Script): string {
+export function createNodeIdForExecutable(executable: Executable): TreeNodeId {
-  return script.id;
+  return executable.executableId;
 }
 
-export function getScriptId(nodeId: string): string {
+export function createExecutableIdFromNodeId(nodeId: TreeNodeId): ExecutableId {
   return nodeId;
 }
 
-export function getCategoryId(nodeId: string): number {
-  return +nodeId;
-}
-
-export function getCategoryNodeId(category: Category): string {
-  return `${category.id}`;
-}
-
 function parseCategoryRecursively(
   parentCategory: Category,
 ): NodeMetadata[] {
   return [
-    ...createCategoryNodes(parentCategory.subCategories),
+    ...createCategoryNodes(parentCategory.subcategories),
     ...createScriptNodes(parentCategory.scripts),
   ];
 }
@@ -57,7 +52,7 @@ function convertCategoryToNode(
   children: readonly NodeMetadata[],
 ): NodeMetadata {
   return {
-    id: getCategoryNodeId(category),
+    executableId: createNodeIdForExecutable(category),
     type: NodeType.Category,
     text: category.name,
     children,
@@ -68,7 +63,7 @@ function convertCategoryToNode(
 
 function convertScriptToNode(script: Script): NodeMetadata {
   return {
-    id: getScriptNodeId(script),
+    executableId: createNodeIdForExecutable(script),
     type: NodeType.Script,
     text: script.name,
     children: [],