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, 65 insertions, 0 deletions

diff --git a/packages/models/src/videos/transcoding/video-transcoding.model.ts b/packages/models/src/videos/transcoding/video-transcoding.model.ts
new file mode 100644
index 000000000..e2c2a56e5
--- /dev/null
+++ b/packages/models/src/videos/transcoding/video-transcoding.model.ts
@@ -0,0 +1,65 @@
+// Types used by plugins and ffmpeg-utils
+
+export type EncoderOptionsBuilderParams = {
+  input: string
+
+  resolution: number
+
+  // If PeerTube applies a filter, transcoding profile must not copy input stream
+  canCopyAudio: boolean
+  canCopyVideo: boolean
+
+  fps: number
+
+  // Could be undefined if we could not get input bitrate (some RTMP streams for example)
+  inputBitrate: number
+  inputRatio: number
+
+  // For lives
+  streamNum?: number
+}
+
+export type EncoderOptionsBuilder = (params: EncoderOptionsBuilderParams) => Promise<EncoderOptions> | EncoderOptions
+
+export interface EncoderOptions {
+  copy?: boolean // Copy stream? Default to false
+
+  scaleFilter?: {
+    name: string
+  }
+
+  inputOptions?: string[]
+  outputOptions?: string[]
+}
+
+// All our encoders
+
+export interface EncoderProfile <T> {
+  [ profile: string ]: T
+
+  default: T
+}
+
+export type AvailableEncoders = {
+  available: {
+    live: {
+      [ encoder: string ]: EncoderProfile<EncoderOptionsBuilder>
+    }
+
+    vod: {
+      [ encoder: string ]: EncoderProfile<EncoderOptionsBuilder>
+    }
+  }
+
+  encodersToTry: {
+    vod: {
+      video: string[]
+      audio: string[]
+    }
+
+    live: {
+      video: string[]
+      audio: string[]
+    }
+  }
+}