build: convert some scripts to TS (#24891)

script/gen-filenames.ts

@@ -0,0 +1,109 @@
+import * as cp from 'child_process';
+import * as fs from 'fs-extra';
+import * as os from 'os';
+import * as path from 'path';
+
+const rootPath = path.resolve(__dirname, '..');
+const gniPath = path.resolve(__dirname, '../filenames.auto.gni');
+
+const allDocs = fs.readdirSync(path.resolve(__dirname, '../docs/api'))
+  .map(doc => `docs/api/${doc}`)
+  .concat(
+    fs.readdirSync(path.resolve(__dirname, '../docs/api/structures'))
+      .map(doc => `docs/api/structures/${doc}`)
+  );
+
+const typingFiles = fs.readdirSync(path.resolve(__dirname, '../typings')).map(child => `typings/${child}`);
+
+const main = async () => {
+  const webpackTargets = [
+    {
+      name: 'sandbox_bundle_deps',
+      config: 'webpack.config.sandboxed_renderer.js'
+    },
+    {
+      name: 'isolated_bundle_deps',
+      config: 'webpack.config.isolated_renderer.js'
+    },
+    {
+      name: 'browser_bundle_deps',
+      config: 'webpack.config.browser.js'
+    },
+    {
+      name: 'renderer_bundle_deps',
+      config: 'webpack.config.renderer.js'
+    },
+    {
+      name: 'worker_bundle_deps',
+      config: 'webpack.config.worker.js'
+    },
+    {
+      name: 'asar_bundle_deps',
+      config: 'webpack.config.asar.js'
+    }
+  ];
+
+  const webpackTargetsWithDeps = await Promise.all(webpackTargets.map(async webpackTarget => {
+    const tmpDir = await fs.mkdtemp(path.resolve(os.tmpdir(), 'electron-filenames-'));
+    const child = cp.spawn('node', [
+      'build/webpack/get-outputs.js',
+      `./${webpackTarget.config}`,
+      path.resolve(tmpDir, `${webpackTarget.name}.measure.js`)
+    ], {
+      cwd: path.resolve(__dirname, '..')
+    });
+    let output = '';
+    child.stdout.on('data', chunk => {
+      output += chunk.toString();
+    });
+    child.stderr.on('data', chunk => console.error(chunk.toString()));
+    await new Promise((resolve, reject) => child.on('exit', (code) => {
+      if (code !== 0) {
+        console.error(output);
+        return reject(new Error(`Failed to list webpack dependencies for entry: ${webpackTarget.name}`));
+      }
+
+      resolve();
+    }));
+
+    const webpackTargetWithDeps = {
+      ...webpackTarget,
+      dependencies: (JSON.parse(output) as string[])
+        // Remove whitespace
+        .map(line => line.trim())
+        // Get the relative path
+        .map(line => path.relative(rootPath, line).replace(/\\/g, '/'))
+        // Only care about files in //electron
+        .filter(line => !line.startsWith('..'))
+        // Only care about our own files
+        .filter(line => !line.startsWith('node_modules'))
+        // All webpack builds depend on the tsconfig  and package json files
+        .concat(['tsconfig.json', 'tsconfig.electron.json', 'package.json', ...typingFiles])
+        // Make the generated list easier to read
+        .sort()
+    };
+    await fs.remove(tmpDir);
+    return webpackTargetWithDeps;
+  }));
+
+  fs.writeFileSync(
+    gniPath,
+    `# THIS FILE IS AUTO-GENERATED, PLEASE DO NOT EDIT BY HAND
+auto_filenames = {
+  api_docs = [
+${allDocs.map(doc => `    "${doc}",`).join('\n')}
+  ]
+
+${webpackTargetsWithDeps.map(target => `  ${target.name} = [
+${target.dependencies.map(dep => `    "${dep}",`).join('\n')}
+  ]`).join('\n\n')}
+}
+`);
+};
+
+if (process.mainModule === module) {
+  main().catch((err) => {
+    console.error(err);
+    process.exit(1);
+  });
+}