chrome-devtools-frontend/front_end/entrypoints/formatter_worker/formatter_worker-entrypoint.ts

Chrome DevTools UI

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as Platform from '../../core/platform/platform.js';

import * as FormatterWorker from './formatter_worker.js';

import {FormatterActions} from './FormatterActions.js';

self.onmessage = function(event: MessageEvent): void {
  const method: FormatterActions = event.data.method;
  const params: {indentString: string, content: string, mimeType: string, mapping: [string, string][]} =
      event.data.params;
  if (!method) {
    return;
  }

  switch (method) {
    case FormatterActions.FORMAT:
      self.postMessage(FormatterWorker.FormatterWorker.format(params.mimeType, params.content, params.indentString));
      break;
    case FormatterActions.PARSE_CSS:
      FormatterWorker.CSSRuleParser.parseCSS(params.content, self.postMessage);
      break;
    case FormatterActions.JAVASCRIPT_SUBSTITUTE: {
      const mapping = new Map<string, string>(params.mapping);
      self.postMessage(FormatterWorker.Substitute.substituteExpression(params.content, mapping));
      break;
    }
    case FormatterActions.JAVASCRIPT_SCOPE_TREE: {
      self.postMessage(FormatterWorker.ScopeParser.parseScopes(params.content)?.export());
      break;
    }
    case FormatterActions.EVALUATE_JAVASCRIPT_SUBSTRING:
      self.postMessage(FormatterWorker.FormatterWorker.evaluatableJavaScriptSubstring(params.content));
      break;
    default:
      Platform.assertNever(method, `Unsupport method name: ${method}`);
  }
};

self.postMessage('workerReady');