Refactor filter event handling to a unified event with visitor pattern
to simplify the code, avoid future bugs and provide better test
coverage.
This commit shifts from using separate `filtered` and `filterRemoved`
events to a singular, more expressive `filterChanged` event. The new
approach emits a detailed payload that explicitly indicates the filter
action and the associated filter data. The event object unifies the way
the presentation layer reacts to the events.
Benefits with this approach include:
- Simplifying event listeners by reducing the number of events to
handle.
- Increasing code clarity and reduces potential for oversight by
providing explicit action details in the event payload.
- Offering extensibility for future actions without introducing new
events.
- Providing visitor pattern to handle different kind of events in easy
and robust manner without code repetition.
Other changes:
- Refactor components handling of events to follow DRY and KISS
principles better.
- Refactor `UserFilter.spec.ts` to:
- Make it easier to add new tests.
- Increase code coverage by running all event-based tests on the
current property.
Major refactoring using ESLint with rules from AirBnb and Vue.
Enable most of the ESLint rules and do necessary linting in the code.
Also add more information for rules that are disabled to describe what
they are and why they are disabled.
Allow logging (`console.log`) in test files, and in development mode
(e.g. when working with `npm run serve`), but disable it when
environment is production (as pre-configured by Vue). Also add flag
(`--mode production`) in `lint:eslint` command so production linting is
executed earlier in lifecycle.
Disable rules that requires a separate work. Such as ESLint rules that
are broken in TypeScript: no-useless-constructor (eslint/eslint#14118)
and no-shadow (eslint/eslint#13014).
Reverting any single of the scripts from standard recommendation pool
shows "Standard" selection as selected which is wrong. This commit fixes
it, refactors selection handling in a separate class and it also adds
missing tests. It removes UserSelection.totalSelected propertty in favor of using
UserSelection.selectedScripts.length to provide unified way of accessing
the information.
Alias would remove unnecessary repetitions and less relative paths make changes easier when moving around files. This commit cleans also up some relative paths ('../../../') by using the alias and orders imports. It updates both path alias in tsconfig and module alias in Vue CLI's bundler (vuejs/vue-cli#2398).
