puppeteer/src/initialize.ts

/**
 * Copyright 2020 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Puppeteer } from './common/Puppeteer';
import { PUPPETEER_REVISIONS } from './revisions';
import pkgDir from 'pkg-dir';

export const initializePuppeteer = (packageName: string): Puppeteer => {
  const puppeteerRootDirectory = pkgDir.sync(__dirname);

  let preferredRevision = PUPPETEER_REVISIONS.chromium;
  const isPuppeteerCore = packageName === 'puppeteer-core';
  // puppeteer-core ignores environment variables
  const product = isPuppeteerCore
    ? undefined
    : process.env.PUPPETEER_PRODUCT ||
      process.env.npm_config_puppeteer_product ||
      process.env.npm_package_config_puppeteer_product;
  if (!isPuppeteerCore && product === 'firefox')
    preferredRevision = PUPPETEER_REVISIONS.firefox;

  return new Puppeteer(
    puppeteerRootDirectory,
    preferredRevision,
    isPuppeteerCore,
    product
  );
};