text: // Copyright 2021 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.
  
  function getTestRunnerConfig() {
    try {
      return JSON.parse(process.env.TEST_RUNNER_JSON_CONFIG);
    } catch {
      // Return an empty object so any lookups return undefined
      return {};
    }
  }
  function getTestRunnerConfigSetting(settingKey, fallbackValue) {
    const config = getTestRunnerConfig();
    return config[settingKey] === undefined ? fallbackValue : config[settingKey];
  }
  function requireTestRunnerConfigSetting(settingKey, errorMessage) {
    const config = getTestRunnerConfig();
    if (config[settingKey] === undefined) {
      throw new Error(errorMessage || `Test runner error: could not find required setting ${settingKey}`);
    }
  
    return config[settingKey];
  }
  
  module.exports = {
    getTestRunnerConfigSetting,
    requireTestRunnerConfigSetting
  };
  