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, 58 deletions

diff --git a/server/helpers/stream-replacer.ts b/server/helpers/stream-replacer.ts
deleted file mode 100644
index 4babab418..000000000
--- a/server/helpers/stream-replacer.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-import { Transform, TransformCallback } from 'stream'
-
-// Thanks: https://stackoverflow.com/a/45126242
-class StreamReplacer extends Transform {
-  private pendingChunk: Buffer
-
-  constructor (private readonly replacer: (line: string) => string) {
-    super()
-  }
-
-  _transform (chunk: Buffer, _encoding: BufferEncoding, done: TransformCallback) {
-    try {
-      this.pendingChunk = this.pendingChunk?.length
-        ? Buffer.concat([ this.pendingChunk, chunk ])
-        : chunk
-
-      let index: number
-
-      // As long as we keep finding newlines, keep making slices of the buffer and push them to the
-      // readable side of the transform stream
-      while ((index = this.pendingChunk.indexOf('\n')) !== -1) {
-        // The `end` parameter is non-inclusive, so increase it to include the newline we found
-        const line = this.pendingChunk.slice(0, ++index)
-
-        // `start` is inclusive, but we are already one char ahead of the newline -> all good
-        this.pendingChunk = this.pendingChunk.slice(index)
-
-        // We have a single line here! Prepend the string we want
-        this.push(this.doReplace(line))
-      }
-
-      return done()
-    } catch (err) {
-      return done(err)
-    }
-  }
-
-  _flush (done: TransformCallback) {
-    // If we have any remaining data in the cache, send it out
-    if (!this.pendingChunk?.length) return done()
-
-    try {
-      return done(null, this.doReplace(this.pendingChunk))
-    } catch (err) {
-      return done(err)
-    }
-  }
-
-  private doReplace (buffer: Buffer) {
-    const line = this.replacer(buffer.toString('utf8'))
-
-    return Buffer.from(line, 'utf8')
-  }
-}
-
-export {
-  StreamReplacer
-}