Migrate server to ESM

Sorry for the very big commit that may lead to git log issues and merge
conflicts, but it's a major step forward:

 * Server can be faster at startup because imports() are async and we can
   easily lazy import big modules
 * Angular doesn't seem to support ES import (with .js extension), so we
   had to correctly organize peertube into a monorepo:
    * Use yarn workspace feature
    * Use typescript reference projects for dependencies
    * Shared projects have been moved into "packages", each one is now a
      node module (with a dedicated package.json/tsconfig.json)
    * server/tools have been moved into apps/ and is now a dedicated app
      bundled and published on NPM so users don't have to build peertube
      cli tools manually
    * server/tests have been moved into packages/ so we don't compile
      them every time we want to run the server
 * Use isolatedModule option:
   * Had to move from const enum to const
     (https://www.typescriptlang.org/docs/handbook/enums.html#objects-vs-enums)
   * Had to explictely specify "type" imports when used in decorators
 * Prefer tsx (that uses esbuild under the hood) instead of ts-node to
   load typescript files (tests with mocha or scripts):
     * To reduce test complexity as esbuild doesn't support decorator
       metadata, we only test server files that do not import server
       models
     * We still build tests files into js files for a faster CI
 * Remove unmaintained peertube CLI import script
 * Removed some barrels to speed up execution (less imports)

2 files changed, 152 insertions, 0 deletions

diff --git a/packages/tests/src/server-lib/index.ts b/packages/tests/src/server-lib/index.ts
new file mode 100644
index 000000000..873f53e15
--- /dev/null
+++ b/packages/tests/src/server-lib/index.ts
@@ -0,0 +1 @@
+export * from './video-constant-registry-factory.js'
diff --git a/packages/tests/src/server-lib/video-constant-registry-factory.ts b/packages/tests/src/server-lib/video-constant-registry-factory.ts
new file mode 100644
index 000000000..6bf2d1db6
--- /dev/null
+++ b/packages/tests/src/server-lib/video-constant-registry-factory.ts
@@ -0,0 +1,151 @@
+/* eslint-disable @typescript-eslint/no-unused-expressions */
+import { expect } from 'chai'
+import { VideoPlaylistPrivacyType, VideoPrivacyType } from '@peertube/peertube-models'
+import {
+  VIDEO_CATEGORIES,
+  VIDEO_LANGUAGES,
+  VIDEO_LICENCES,
+  VIDEO_PLAYLIST_PRIVACIES,
+  VIDEO_PRIVACIES
+} from '@peertube/peertube-server/server/initializers/constants.js'
+import { VideoConstantManagerFactory } from '@peertube/peertube-server/server/lib/plugins/video-constant-manager-factory.js'
+
+describe('VideoConstantManagerFactory', function () {
+  const factory = new VideoConstantManagerFactory('peertube-plugin-constants')
+
+  afterEach(() => {
+    factory.resetVideoConstants('peertube-plugin-constants')
+  })
+
+  describe('VideoCategoryManager', () => {
+    const videoCategoryManager = factory.createVideoConstantManager<number>('category')
+
+    it('Should be able to list all video category constants', () => {
+      const constants = videoCategoryManager.getConstants()
+      expect(constants).to.deep.equal(VIDEO_CATEGORIES)
+    })
+
+    it('Should be able to delete a video category constant', () => {
+      const successfullyDeleted = videoCategoryManager.deleteConstant(1)
+      expect(successfullyDeleted).to.be.true
+      expect(videoCategoryManager.getConstantValue(1)).to.be.undefined
+    })
+
+    it('Should be able to add a video category constant', () => {
+      const successfullyAdded = videoCategoryManager.addConstant(42, 'The meaning of life')
+      expect(successfullyAdded).to.be.true
+      expect(videoCategoryManager.getConstantValue(42)).to.equal('The meaning of life')
+    })
+
+    it('Should be able to reset video category constants', () => {
+      videoCategoryManager.deleteConstant(1)
+      videoCategoryManager.resetConstants()
+      expect(videoCategoryManager.getConstantValue(1)).not.be.undefined
+    })
+  })
+
+  describe('VideoLicenceManager', () => {
+    const videoLicenceManager = factory.createVideoConstantManager<number>('licence')
+    it('Should be able to list all video licence constants', () => {
+      const constants = videoLicenceManager.getConstants()
+      expect(constants).to.deep.equal(VIDEO_LICENCES)
+    })
+
+    it('Should be able to delete a video licence constant', () => {
+      const successfullyDeleted = videoLicenceManager.deleteConstant(1)
+      expect(successfullyDeleted).to.be.true
+      expect(videoLicenceManager.getConstantValue(1)).to.be.undefined
+    })
+
+    it('Should be able to add a video licence constant', () => {
+      const successfullyAdded = videoLicenceManager.addConstant(42, 'European Union Public Licence')
+      expect(successfullyAdded).to.be.true
+      expect(videoLicenceManager.getConstantValue(42 as any)).to.equal('European Union Public Licence')
+    })
+
+    it('Should be able to reset video licence constants', () => {
+      videoLicenceManager.deleteConstant(1)
+      videoLicenceManager.resetConstants()
+      expect(videoLicenceManager.getConstantValue(1)).not.be.undefined
+    })
+  })
+
+  describe('PlaylistPrivacyManager', () => {
+    const playlistPrivacyManager = factory.createVideoConstantManager<VideoPlaylistPrivacyType>('playlistPrivacy')
+    it('Should be able to list all video playlist privacy constants', () => {
+      const constants = playlistPrivacyManager.getConstants()
+      expect(constants).to.deep.equal(VIDEO_PLAYLIST_PRIVACIES)
+    })
+
+    it('Should be able to delete a video playlist privacy constant', () => {
+      const successfullyDeleted = playlistPrivacyManager.deleteConstant(1)
+      expect(successfullyDeleted).to.be.true
+      expect(playlistPrivacyManager.getConstantValue(1)).to.be.undefined
+    })
+
+    it('Should be able to add a video playlist privacy constant', () => {
+      const successfullyAdded = playlistPrivacyManager.addConstant(42 as any, 'Friends only')
+      expect(successfullyAdded).to.be.true
+      expect(playlistPrivacyManager.getConstantValue(42 as any)).to.equal('Friends only')
+    })
+
+    it('Should be able to reset video playlist privacy constants', () => {
+      playlistPrivacyManager.deleteConstant(1)
+      playlistPrivacyManager.resetConstants()
+      expect(playlistPrivacyManager.getConstantValue(1)).not.be.undefined
+    })
+  })
+
+  describe('VideoPrivacyManager', () => {
+    const videoPrivacyManager = factory.createVideoConstantManager<VideoPrivacyType>('privacy')
+    it('Should be able to list all video privacy constants', () => {
+      const constants = videoPrivacyManager.getConstants()
+      expect(constants).to.deep.equal(VIDEO_PRIVACIES)
+    })
+
+    it('Should be able to delete a video privacy constant', () => {
+      const successfullyDeleted = videoPrivacyManager.deleteConstant(1)
+      expect(successfullyDeleted).to.be.true
+      expect(videoPrivacyManager.getConstantValue(1)).to.be.undefined
+    })
+
+    it('Should be able to add a video privacy constant', () => {
+      const successfullyAdded = videoPrivacyManager.addConstant(42 as any, 'Friends only')
+      expect(successfullyAdded).to.be.true
+      expect(videoPrivacyManager.getConstantValue(42 as any)).to.equal('Friends only')
+    })
+
+    it('Should be able to reset video privacy constants', () => {
+      videoPrivacyManager.deleteConstant(1)
+      videoPrivacyManager.resetConstants()
+      expect(videoPrivacyManager.getConstantValue(1)).not.be.undefined
+    })
+  })
+
+  describe('VideoLanguageManager', () => {
+    const videoLanguageManager = factory.createVideoConstantManager<string>('language')
+    it('Should be able to list all video language constants', () => {
+      const constants = videoLanguageManager.getConstants()
+      expect(constants).to.deep.equal(VIDEO_LANGUAGES)
+    })
+
+    it('Should be able to add a video language constant', () => {
+      const successfullyAdded = videoLanguageManager.addConstant('fr', 'Fr occitan')
+      expect(successfullyAdded).to.be.true
+      expect(videoLanguageManager.getConstantValue('fr')).to.equal('Fr occitan')
+    })
+
+    it('Should be able to delete a video language constant', () => {
+      videoLanguageManager.addConstant('fr', 'Fr occitan')
+      const successfullyDeleted = videoLanguageManager.deleteConstant('fr')
+      expect(successfullyDeleted).to.be.true
+      expect(videoLanguageManager.getConstantValue('fr')).to.be.undefined
+    })
+
+    it('Should be able to reset video language constants', () => {
+      videoLanguageManager.addConstant('fr', 'Fr occitan')
+      videoLanguageManager.resetConstants()
+      expect(videoLanguageManager.getConstantValue('fr')).to.be.undefined
+    })
+  })
+})