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)

1 files changed, 0 insertions, 100 deletions

diff --git a/server/lib/views/video-views-manager.ts b/server/lib/views/video-views-manager.ts
deleted file mode 100644
index c088dad5e..000000000
--- a/server/lib/views/video-views-manager.ts
+++ /dev/null
@@ -1,100 +0,0 @@
-import { logger, loggerTagsFactory } from '@server/helpers/logger'
-import { MVideo, MVideoImmutable } from '@server/types/models'
-import { VideoViewEvent } from '@shared/models'
-import { VideoScope, VideoViewerCounters, VideoViewerStats, VideoViews, ViewerScope } from './shared'
-
-/**
- * If processing a local view:
- *  - We update viewer information (segments watched, watch time etc)
- *  - We add +1 to video viewers counter if this is a new viewer
- *  - We add +1 to video views counter if this is a new view and if the user watched enough seconds
- *  - We send AP message to notify about this viewer and this view
- *  - We update last video time for the user if authenticated
- *
- * If processing a remote view:
- *  - We add +1 to video viewers counter
- *  - We add +1 to video views counter
- *
- * A viewer is a someone that watched one or multiple sections of a video
- * A viewer that watched only a few seconds of a video may not increment the video views counter
- * Viewers statistics are sent to origin instance using the `WatchAction` ActivityPub object
- *
- */
-
-const lTags = loggerTagsFactory('views')
-
-export class VideoViewsManager {
-
-  private static instance: VideoViewsManager
-
-  private videoViewerStats: VideoViewerStats
-  private videoViewerCounters: VideoViewerCounters
-  private videoViews: VideoViews
-
-  private constructor () {
-  }
-
-  init () {
-    this.videoViewerStats = new VideoViewerStats()
-    this.videoViewerCounters = new VideoViewerCounters()
-    this.videoViews = new VideoViews()
-  }
-
-  async processLocalView (options: {
-    video: MVideoImmutable
-    currentTime: number
-    ip: string | null
-    viewEvent?: VideoViewEvent
-  }) {
-    const { video, ip, viewEvent, currentTime } = options
-
-    logger.debug('Processing local view for %s and ip %s.', video.url, ip, lTags())
-
-    await this.videoViewerStats.addLocalViewer({ video, ip, viewEvent, currentTime })
-
-    const successViewer = await this.videoViewerCounters.addLocalViewer({ video, ip })
-
-    // Do it after added local viewer to fetch updated information
-    const watchTime = await this.videoViewerStats.getWatchTime(video.id, ip)
-
-    const successView = await this.videoViews.addLocalView({ video, watchTime, ip })
-
-    return { successView, successViewer }
-  }
-
-  async processRemoteView (options: {
-    video: MVideo
-    viewerId: string | null
-    viewerExpires?: Date
-  }) {
-    const { video, viewerId, viewerExpires } = options
-
-    logger.debug('Processing remote view for %s.', video.url, { viewerExpires, viewerId, ...lTags() })
-
-    if (viewerExpires) await this.videoViewerCounters.addRemoteViewer({ video, viewerId, viewerExpires })
-    else await this.videoViews.addRemoteView({ video })
-  }
-
-  getViewers (video: MVideo) {
-    return this.videoViewerCounters.getViewers(video)
-  }
-
-  getTotalViewers (options: {
-    viewerScope: ViewerScope
-    videoScope: VideoScope
-  }) {
-    return this.videoViewerCounters.getTotalViewers(options)
-  }
-
-  buildViewerExpireTime () {
-    return this.videoViewerCounters.buildViewerExpireTime()
-  }
-
-  processViewerStats () {
-    return this.videoViewerStats.processViewerStats()
-  }
-
-  static get Instance () {
-    return this.instance || (this.instance = new this())
-  }
-}