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, 85 deletions

diff --git a/server/lib/opentelemetry/metric-helpers/playback-metrics.ts b/server/lib/opentelemetry/metric-helpers/playback-metrics.ts
deleted file mode 100644
index 1eb08b5a6..000000000
--- a/server/lib/opentelemetry/metric-helpers/playback-metrics.ts
+++ /dev/null
@@ -1,85 +0,0 @@
-import { Counter, Meter } from '@opentelemetry/api'
-import { MVideoImmutable } from '@server/types/models'
-import { PlaybackMetricCreate } from '@shared/models'
-
-export class PlaybackMetrics {
-  private errorsCounter: Counter
-  private resolutionChangesCounter: Counter
-
-  private downloadedBytesP2PCounter: Counter
-  private uploadedBytesP2PCounter: Counter
-
-  private downloadedBytesHTTPCounter: Counter
-
-  private peersP2PPeersGaugeBuffer: {
-    value: number
-    attributes: any
-  }[] = []
-
-  constructor (private readonly meter: Meter) {
-
-  }
-
-  buildCounters () {
-    this.errorsCounter = this.meter.createCounter('peertube_playback_errors_count', {
-      description: 'Errors collected from PeerTube player.'
-    })
-
-    this.resolutionChangesCounter = this.meter.createCounter('peertube_playback_resolution_changes_count', {
-      description: 'Resolution changes collected from PeerTube player.'
-    })
-
-    this.downloadedBytesHTTPCounter = this.meter.createCounter('peertube_playback_http_downloaded_bytes', {
-      description: 'Downloaded bytes with HTTP by PeerTube player.'
-    })
-    this.downloadedBytesP2PCounter = this.meter.createCounter('peertube_playback_p2p_downloaded_bytes', {
-      description: 'Downloaded bytes with P2P by PeerTube player.'
-    })
-
-    this.uploadedBytesP2PCounter = this.meter.createCounter('peertube_playback_p2p_uploaded_bytes', {
-      description: 'Uploaded bytes with P2P by PeerTube player.'
-    })
-
-    this.meter.createObservableGauge('peertube_playback_p2p_peers', {
-      description: 'Total P2P peers connected to the PeerTube player.'
-    }).addCallback(observableResult => {
-      for (const gauge of this.peersP2PPeersGaugeBuffer) {
-        observableResult.observe(gauge.value, gauge.attributes)
-      }
-
-      this.peersP2PPeersGaugeBuffer = []
-    })
-  }
-
-  observe (video: MVideoImmutable, metrics: PlaybackMetricCreate) {
-    const attributes = {
-      videoOrigin: video.remote
-        ? 'remote'
-        : 'local',
-
-      playerMode: metrics.playerMode,
-
-      resolution: metrics.resolution + '',
-      fps: metrics.fps + '',
-
-      p2pEnabled: metrics.p2pEnabled,
-
-      videoUUID: video.uuid
-    }
-
-    this.errorsCounter.add(metrics.errors, attributes)
-    this.resolutionChangesCounter.add(metrics.resolutionChanges, attributes)
-
-    this.downloadedBytesHTTPCounter.add(metrics.downloadedBytesHTTP, attributes)
-    this.downloadedBytesP2PCounter.add(metrics.downloadedBytesP2P, attributes)
-
-    this.uploadedBytesP2PCounter.add(metrics.uploadedBytesP2P, attributes)
-
-    if (metrics.p2pPeers) {
-      this.peersP2PPeersGaugeBuffer.push({
-        value: metrics.p2pPeers,
-        attributes
-      })
-    }
-  }
-}