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, 51 deletions

diff --git a/server/lib/opentelemetry/metric-helpers/bittorrent-tracker-observers-builder.ts b/server/lib/opentelemetry/metric-helpers/bittorrent-tracker-observers-builder.ts
deleted file mode 100644
index ef40c0fa9..000000000
--- a/server/lib/opentelemetry/metric-helpers/bittorrent-tracker-observers-builder.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-import { Meter } from '@opentelemetry/api'
-
-export class BittorrentTrackerObserversBuilder {
-
-  constructor (private readonly meter: Meter, private readonly trackerServer: any) {
-
-  }
-
-  buildObservers () {
-    const activeInfohashes = this.meter.createObservableGauge('peertube_bittorrent_tracker_active_infohashes_total', {
-      description: 'Total active infohashes in the PeerTube BitTorrent Tracker'
-    })
-    const inactiveInfohashes = this.meter.createObservableGauge('peertube_bittorrent_tracker_inactive_infohashes_total', {
-      description: 'Total inactive infohashes in the PeerTube BitTorrent Tracker'
-    })
-    const peers = this.meter.createObservableGauge('peertube_bittorrent_tracker_peers_total', {
-      description: 'Total peers in the PeerTube BitTorrent Tracker'
-    })
-
-    this.meter.addBatchObservableCallback(observableResult => {
-      const infohashes = Object.keys(this.trackerServer.torrents)
-
-      const counters = {
-        activeInfohashes: 0,
-        inactiveInfohashes: 0,
-        peers: 0,
-        uncompletedPeers: 0
-      }
-
-      for (const infohash of infohashes) {
-        const content = this.trackerServer.torrents[infohash]
-
-        const peers = content.peers
-        if (peers.keys.length !== 0) counters.activeInfohashes++
-        else counters.inactiveInfohashes++
-
-        for (const peerId of peers.keys) {
-          const peer = peers.peek(peerId)
-          if (peer == null) return
-
-          counters.peers++
-        }
-      }
-
-      observableResult.observe(activeInfohashes, counters.activeInfohashes)
-      observableResult.observe(inactiveInfohashes, counters.inactiveInfohashes)
-      observableResult.observe(peers, counters.peers)
-    }, [ activeInfohashes, inactiveInfohashes, peers ])
-  }
-
-}