build: tsify worker/init (#24497)

lib/worker/init.ts

@@ -0,0 +1,35 @@
+import * as path from 'path';
+
+const Module = require('module');
+
+// We modified the original process.argv to let node.js load the
+// init.js, we need to restore it here.
+process.argv.splice(1, 1);
+
+// Clear search paths.
+require('../common/reset-search-paths');
+
+// Import common settings.
+require('@electron/internal/common/init');
+
+// Export node bindings to global.
+const { makeRequireFunction } = __non_webpack_require__('internal/modules/cjs/helpers') // eslint-disable-line
+global.module = new Module('electron/js2c/worker_init');
+global.require = makeRequireFunction(global.module);
+
+// Set the __filename to the path of html file if it is file: protocol.
+if (self.location.protocol === 'file:') {
+  const pathname = process.platform === 'win32' && self.location.pathname[0] === '/' ? self.location.pathname.substr(1) : self.location.pathname;
+  global.__filename = path.normalize(decodeURIComponent(pathname));
+  global.__dirname = path.dirname(global.__filename);
+
+  // Set module's filename so relative require can work as expected.
+  global.module.filename = global.__filename;
+
+  // Also search for module under the html file.
+  global.module.paths = Module._nodeModulePaths(global.__dirname);
+} else {
+  // For backwards compatibility we fake these two paths here
+  global.__filename = path.join(process.resourcesPath, 'electron.asar', 'worker', 'init.js');
+  global.__dirname = path.join(process.resourcesPath, 'electron.asar', 'worker');
+}