feat(types): create peertube-types package

Create dedicated Typescript "types" configuration file for each "projects".
Create a types folder which includes every useful ts definition:
- client
- server
- shared
Add tooling to create a proper package, extract dependencies, etc...
Add CI Github task.

refactor(types): publish types package in release script

3 files changed, 84 insertions, 1 deletions

diff --git a/scripts/generate-types-package.ts b/scripts/generate-types-package.ts
new file mode 100644
index 000000000..3543fa472
--- /dev/null
+++ b/scripts/generate-types-package.ts
@@ -0,0 +1,78 @@
+import { copyFile, readJson, writeFile, writeJSON } from 'fs-extra'
+import { resolve } from 'path'
+import { cwd } from 'process'
+import { execSync } from 'child_process'
+import depcheck, { PackageDependencies } from 'depcheck'
+
+run()
+  .then(() => process.exit(0))
+  .catch(err => {
+    console.error(err)
+    process.exit(-1)
+  })
+
+async function run () {
+  execSync('npm run build:types', { stdio: 'inherit' })
+  const typesPath = resolve(cwd(), './types/')
+  const typesPackageJsonPath = resolve(typesPath, './package.json')
+  const typesGitIgnorePath = resolve(typesPath, './.gitignore')
+  const mainPackageJson = await readJson(resolve(cwd(), './package.json'))
+  const tsConfigPath = resolve(cwd(), './tsconfig.json')
+  const tsConfig = await readJson(tsConfigPath)
+  const clientPackageJson = await readJson(resolve(cwd(), './client/package.json'))
+
+  const allDependencies = Object.assign(
+    mainPackageJson.dependencies,
+    mainPackageJson.devDepencies,
+    clientPackageJson.dependencies
+  ) as PackageDependencies
+
+  // https://github.com/depcheck/depcheck#api
+  const depcheckOptions = {
+    parsers: { '**/*.ts': depcheck.parser.typescript },
+    detectors: [
+      depcheck.detector.requireCallExpression,
+      depcheck.detector.importDeclaration
+    ],
+    ignoreMatches: Object.keys(tsConfig?.compilerOptions?.paths || []),
+    package: { dependencies: allDependencies }
+  }
+
+  const { dependencies: unusedDependencies } = await depcheck(resolve(cwd(), './types/'), depcheckOptions)
+  console.log(`Removing ${Object.keys(unusedDependencies).length} unused dependencies.`)
+  const dependencies = Object
+    .keys(allDependencies)
+    .filter(dependencyName => !unusedDependencies.includes(dependencyName))
+    .reduce((dependencies, dependencyName) => {
+      dependencies[dependencyName] = allDependencies[dependencyName]
+      return dependencies
+    }, {})
+
+  const { description, version, licence, engines, author, repository } = mainPackageJson
+  const typesPackageJson = {
+    name: '@peertube/peertube-types',
+    description,
+    version,
+    private: false,
+    license: licence,
+    engines,
+    author,
+    repository,
+    dependencies
+  }
+  console.log(`Writing package.json to ${typesPackageJsonPath}`)
+  await writeJSON(typesPackageJsonPath, typesPackageJson, { spaces: 2 })
+
+  console.log(`Writing git ignore to ${typesGitIgnorePath}`)
+  await writeFile(typesGitIgnorePath, '*.tsbuildinfo')
+
+  console.log('Copying tsconfig files')
+  await copyFile(tsConfigPath, resolve(typesPath, './tsconfig.json'))
+  await copyFile(resolve(cwd(), './tsconfig.base.json'), resolve(typesPath, './tsconfig.base.json'))
+  tsConfig.references.map(({ path }) => path).forEach((path) => {
+    const src = resolve(cwd(), path, '/tsconfig.json')
+    const dest = resolve(typesPath, path, './tsconfig.json')
+    console.log(`${src} -> ${dest}`)
+    copyFile(src, dest).catch((e) => console.error(e))
+  })
+}
diff --git a/scripts/release.sh b/scripts/release.sh
index 6423d17ee..7681de90d 100755
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -118,3 +118,8 @@ rm -f "./client/dist/embed-stats.json"
       git checkout "$branch"
   fi
 )
+
+# Release types package
+npm run generate-types-package
+cd types
+npm publish --access public
diff --git a/scripts/tsconfig.json b/scripts/tsconfig.json
index 0d9716f2d..0cfd927a6 100644
--- a/scripts/tsconfig.json
+++ b/scripts/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "extends": "../tsconfig.base.json",
   "compilerOptions": {
-    "outDir": "../dist/scripts",
+    "outDir": "../dist/scripts"
   },
   "references": [
     { "path": "../shared" },