text: /**
   * Copyright 2018 The AMP HTML Authors. 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.
   */
  
  /** @fileoverview Definitions of logging methods for transforms and linting. */
  
  /** @typedef {{variadic: boolean, messageArgPos: number}} */
  let LogMethodMetadataDef;
  
  const definitionFile = 'src/log.js';
  
  /** Functions exposed as singleton getters for `Log`. */
  const singletonFunctions = ['dev', 'user'];
  
  const assertAliases = singletonFunctions.map((prefix) => `${prefix}Assert`);
  
  /**
   * Known transformable logging methods.
   * @type {!Object<string, LogMethodMetadataDef>}
   */
  const transformableMethods = {
    assert: {variadic: true, extractMessages: true, messageArgPos: 1},
    assertString: {variadic: false, extractMessages: true, messageArgPos: 1},
    assertNumber: {variadic: false, extractMessages: true, messageArgPos: 1},
    assertBoolean: {variadic: false, extractMessages: true, messageArgPos: 1},
    assertElement: {variadic: false, extractMessages: true, messageArgPos: 1},
    fine: {variadic: true, extractMessages: true, messageArgPos: 1},
    info: {variadic: true, extractMessages: true, messageArgPos: 1},
    warn: {variadic: true, extractMessages: true, messageArgPos: 1},
    error: {variadic: true, extractMessages: true, messageArgPos: 1},
    createExpectedError: {
      variadic: true,
      extractMessages: true,
      messageArgPos: 0,
    },
    expectedError: {variadic: true, extractMessages: true, messageArgPos: 1},
    createError: {variadic: true, extractMessages: true, messageArgPos: 0},
  };
  
  module.exports = {
    assertAliases,
    definitionFile,
    singletonFunctions,
    transformableMethods,
  };
  