workbox-cdn/workbox/workbox-core.dev.js

/* eslint-disable */
// This is extracted from the Babel runtime (original source: https://github.com/babel/babel/blob/9e0f5235b1ca5167c368a576ad7c5af62d20b0e3/packages/babel-helpers/src/helpers.js#L240).
// As part of the Rollup bundling process, it's injected once into workbox-core
// and reused throughout all of the other modules, avoiding code duplication.
// See https://github.com/GoogleChrome/workbox/pull/1048#issuecomment-344698046
// for further background.
self.babelHelpers = {
  asyncToGenerator: function(fn) {
    return function() {
      var gen = fn.apply(this, arguments);
      return new Promise(function(resolve, reject) {
        function step(key, arg) {
          try {
            var info = gen[key](arg);
            var value = info.value;
          } catch (error) {
            reject(error);
            return;
          }

          if (info.done) {
            resolve(value);
          } else {
            return Promise.resolve(value).then(function(value) {
              step('next', value);
            }, function(err) {
              step('throw', err);
            });
          }
        }

        return step('next');
      });
    };
  },
};

this.workbox = this.workbox || {};
this.workbox.core = (function () {
  'use strict';

  try {
    self.workbox.v['workbox:core:3.6.2'] = 1;
  } catch (e) {} // eslint-disable-line

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * The available log levels in Workbox: debug, log, warn, error and silent.
   *
   * @property {int} debug Prints all logs from Workbox. Useful for debugging.
   * @property {int} log Prints console log, warn, error and groups. Default for
   * debug builds.
   * @property {int} warn Prints console warn, error and groups. Default for
   * non-debug builds.
   * @property {int} error Print console error and groups.
   * @property {int} silent Force no logging from Workbox.
   *
   * @alias workbox.core.LOG_LEVELS
   */

  var LOG_LEVELS = {
    debug: 0,
    log: 1,
    warn: 2,
    error: 3,
    silent: 4
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  // Safari doesn't print all console.groupCollapsed() arguments.
  // Related bug: https://bugs.webkit.org/show_bug.cgi?id=182754
  const isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);

  const GREY = `#7f8c8d`;
  const GREEN = `#2ecc71`;
  const YELLOW = `#f39c12`;
  const RED = `#c0392b`;
  const BLUE = `#3498db`;

  const getDefaultLogLevel = () => LOG_LEVELS.log;

  let logLevel = getDefaultLogLevel();
  const shouldPrint = minLevel => logLevel <= minLevel;
  const setLoggerLevel = newLogLevel => logLevel = newLogLevel;
  const getLoggerLevel = () => logLevel;

  // We always want groups to be logged unless logLevel is silent.
  const groupLevel = LOG_LEVELS.error;

  const _print = function (keyName, logArgs, levelColor) {
    const logLevel = keyName.indexOf('group') === 0 ? groupLevel : LOG_LEVELS[keyName];
    if (!shouldPrint(logLevel)) {
      return;
    }

    if (!levelColor || keyName === 'groupCollapsed' && isSafari) {
      console[keyName](...logArgs);
      return;
    }

    const logPrefix = ['%cworkbox', `background: ${levelColor}; color: white; padding: 2px 0.5em; ` + `border-radius: 0.5em;`];
    console[keyName](...logPrefix, ...logArgs);
  };

  const groupEnd = () => {
    if (shouldPrint(groupLevel)) {
      console.groupEnd();
    }
  };

  const defaultExport = {
    groupEnd,
    unprefixed: {
      groupEnd
    }
  };

  const setupLogs = (keyName, color) => {
    defaultExport[keyName] = (...args) => _print(keyName, args, color);
    defaultExport.unprefixed[keyName] = (...args) => _print(keyName, args);
  };

  const levelToColor = {
    debug: GREY,
    log: GREEN,
    warn: YELLOW,
    error: RED,
    groupCollapsed: BLUE
  };
  Object.keys(levelToColor).forEach(keyName => setupLogs(keyName, levelToColor[keyName]));

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  var messages = {
    'invalid-value': ({ paramName, validValueDescription, value }) => {
      if (!paramName || !validValueDescription) {
        throw new Error(`Unexpected input to 'invalid-value' error.`);
      }
      return `The '${paramName}' parameter was given a value with an ` + `unexpected value. ${validValueDescription} Received a value of ` + `${JSON.stringify(value)}.`;
    },

    'not-in-sw': ({ moduleName }) => {
      if (!moduleName) {
        throw new Error(`Unexpected input to 'not-in-sw' error.`);
      }
      return `The '${moduleName}' must be used in a service worker.`;
    },

    'not-an-array': ({ moduleName, className, funcName, paramName }) => {
      if (!moduleName || !className || !funcName || !paramName) {
        throw new Error(`Unexpected input to 'not-an-array' error.`);
      }
      return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className}.${funcName}()' must be an array.`;
    },

    'incorrect-type': ({ expectedType, paramName, moduleName, className,
      funcName }) => {
      if (!expectedType || !paramName || !moduleName || !funcName) {
        throw new Error(`Unexpected input to 'incorrect-type' error.`);
      }
      return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}` + `${funcName}()' must be of type ${expectedType}.`;
    },

    'incorrect-class': ({ expectedClass, paramName, moduleName, className,
      funcName, isReturnValueProblem }) => {
      if (!expectedClass || !moduleName || !funcName) {
        throw new Error(`Unexpected input to 'incorrect-class' error.`);
      }

      if (isReturnValueProblem) {
        return `The return value from ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`;
      }

      return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`;
    },

    'missing-a-method': ({ expectedMethod, paramName, moduleName, className,
      funcName }) => {
      if (!expectedMethod || !paramName || !moduleName || !className || !funcName) {
        throw new Error(`Unexpected input to 'missing-a-method' error.`);
      }
      return `${moduleName}.${className}.${funcName}() expected the ` + `'${paramName}' parameter to expose a '${expectedMethod}' method.`;
    },

    'add-to-cache-list-unexpected-type': ({ entry }) => {
      return `An unexpected entry was passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' The entry ` + `'${JSON.stringify(entry)}' isn't supported. You must supply an array of ` + `strings with one or more characters, objects with a url property or ` + `Request objects.`;
    },

    'add-to-cache-list-conflicting-entries': ({ firstEntry, secondEntry }) => {
      if (!firstEntry || !secondEntry) {
        throw new Error(`Unexpected input to ` + `'add-to-cache-list-duplicate-entries' error.`);
      }

      return `Two of the entries passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' had matching ` + `URLs but different revision details. This means workbox-precaching ` + `is unable to determine cache the asset correctly. Please remove one ` + `of the entries.`;
    },

    'plugin-error-request-will-fetch': ({ thrownError }) => {
      if (!thrownError) {
        throw new Error(`Unexpected input to ` + `'plugin-error-request-will-fetch', error.`);
      }

      return `An error was thrown by a plugins 'requestWillFetch()' method. ` + `The thrown error message was: '${thrownError.message}'.`;
    },

    'invalid-cache-name': ({ cacheNameId, value }) => {
      if (!cacheNameId) {
        throw new Error(`Expected a 'cacheNameId' for error 'invalid-cache-name'`);
      }

      return `You must provide a name containing at least one character for ` + `setCacheDeatils({${cacheNameId}: '...'}). Received a value of ` + `'${JSON.stringify(value)}'`;
    },

    'unregister-route-but-not-found-with-method': ({ method }) => {
      if (!method) {
        throw new Error(`Unexpected input to ` + `'unregister-route-but-not-found-with-method' error.`);
      }

      return `The route you're trying to unregister was not  previously ` + `registered for the method type '${method}'.`;
    },

    'unregister-route-route-not-registered': () => {
      return `The route you're trying to unregister was not previously ` + `registered.`;
    },

    'queue-replay-failed': ({ name, count }) => {
      return `${count} requests failed, while trying to replay Queue: ${name}.`;
    },

    'duplicate-queue-name': ({ name }) => {
      return `The Queue name '${name}' is already being used. ` + `All instances of backgroundSync.Queue must be given unique names.`;
    },

    'expired-test-without-max-age': ({ methodName, paramName }) => {
      return `The '${methodName}()' method can only be used when the ` + `'${paramName}' is used in the constructor.`;
    },

    'unsupported-route-type': ({ moduleName, className, funcName, paramName }) => {
      return `The supplied '${paramName}' parameter was an unsupported type. ` + `Please check the docs for ${moduleName}.${className}.${funcName} for ` + `valid input types.`;
    },

    'not-array-of-class': ({ value, expectedClass,
      moduleName, className, funcName, paramName }) => {
      return `The supplied '${paramName}' parameter must be an array of ` + `'${expectedClass}' objects. Received '${JSON.stringify(value)},'. ` + `Please check the call to ${moduleName}.${className}.${funcName}() ` + `to fix the issue.`;
    },

    'max-entries-or-age-required': ({ moduleName, className, funcName }) => {
      return `You must define either config.maxEntries or config.maxAgeSeconds` + `in ${moduleName}.${className}.${funcName}`;
    },

    'statuses-or-headers-required': ({ moduleName, className, funcName }) => {
      return `You must define either config.statuses or config.headers` + `in ${moduleName}.${className}.${funcName}`;
    },

    'invalid-string': ({ moduleName, className, funcName, paramName }) => {
      if (!paramName || !moduleName || !className || !funcName) {
        throw new Error(`Unexpected input to 'invalid-string' error.`);
      }
      return `When using strings, the '${paramName}' parameter must start with ` + `'http' (for cross-origin matches) or '/' (for same-origin matches). ` + `Please see the docs for ${moduleName}.${className}.${funcName}() for ` + `more info.`;
    },
    'channel-name-required': () => {
      return `You must provide a channelName to construct a ` + `BroadcastCacheUpdate instance.`;
    },
    'invalid-responses-are-same-args': () => {
      return `The arguments passed into responsesAreSame() appear to be ` + `invalid. Please ensure valid Responses are used.`;
    },
    'expire-custom-caches-only': () => {
      return `You must provide a 'cacheName' property when using the ` + `expiration plugin with a runtime caching strategy.`;
    },
    'unit-must-be-bytes': ({ normalizedRangeHeader }) => {
      if (!normalizedRangeHeader) {
        throw new Error(`Unexpected input to 'unit-must-be-bytes' error.`);
      }
      return `The 'unit' portion of the Range header must be set to 'bytes'. ` + `The Range header provided was "${normalizedRangeHeader}"`;
    },
    'single-range-only': ({ normalizedRangeHeader }) => {
      if (!normalizedRangeHeader) {
        throw new Error(`Unexpected input to 'single-range-only' error.`);
      }
      return `Multiple ranges are not supported. Please use a  single start ` + `value, and optional end value. The Range header provided was ` + `"${normalizedRangeHeader}"`;
    },
    'invalid-range-values': ({ normalizedRangeHeader }) => {
      if (!normalizedRangeHeader) {
        throw new Error(`Unexpected input to 'invalid-range-values' error.`);
      }
      return `The Range header is missing both start and end values. At least ` + `one of those values is needed. The Range header provided was ` + `"${normalizedRangeHeader}"`;
    },
    'no-range-header': () => {
      return `No Range header was found in the Request provided.`;
    },
    'range-not-satisfiable': ({ size, start, end }) => {
      return `The start (${start}) and end (${end}) values in the Range are ` + `not satisfiable by the cached response, which is ${size} bytes.`;
    },
    'attempt-to-cache-non-get-request': ({ url, method }) => {
      return `Unable to cache '${url}' because it is a '${method}' request and ` + `only 'GET' requests can be cached.`;
    },
    'cache-put-with-no-response': ({ url }) => {
      return `There was an attempt to cache '${url}' but the response was not ` + `defined.`;
    }
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  const generatorFunction = (code, ...args) => {
    const message = messages[code];
    if (!message) {
      throw new Error(`Unable to find message for code '${code}'.`);
    }

    return message(...args);
  };

  const exportedValue = generatorFunction;

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * Workbox errors should be thrown with this class.
   * This allows use to ensure the type easily in tests,
   * helps developers identify errors from workbox
   * easily and allows use to optimise error
   * messages correctly.
   *
   * @private
   */
  class WorkboxError extends Error {
    /**
     *
     * @param {string} errorCode The error code that
     * identifies this particular error.
     * @param {Object=} details Any relevant arguments
     * that will help developers identify issues should
     * be added as a key on the context object.
     */
    constructor(errorCode, details) {
      let message = exportedValue(errorCode, details);

      super(message);

      this.name = errorCode;
      this.details = details;
    }
  }

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /*
   * This method returns true if the current context is a service worker.
   */
  const isSwEnv = moduleName => {
    if (!('ServiceWorkerGlobalScope' in self)) {
      throw new WorkboxError('not-in-sw', { moduleName });
    }
  };

  /*
   * This method throws if the supplied value is not an array.
   * The destructed values are required to produce a meaningful error for users.
   * The destructed and restructured object is so it's clear what is
   * needed.
   */
  const isArray = (value, { moduleName, className, funcName, paramName }) => {
    if (!Array.isArray(value)) {
      throw new WorkboxError('not-an-array', {
        moduleName,
        className,
        funcName,
        paramName
      });
    }
  };

  const hasMethod = (object, expectedMethod, { moduleName, className, funcName, paramName }) => {
    const type = typeof object[expectedMethod];
    if (type !== 'function') {
      throw new WorkboxError('missing-a-method', { paramName, expectedMethod,
        moduleName, className, funcName });
    }
  };

  const isType = (object, expectedType, { moduleName, className, funcName, paramName }) => {
    if (typeof object !== expectedType) {
      throw new WorkboxError('incorrect-type', { paramName, expectedType,
        moduleName, className, funcName });
    }
  };

  const isInstance = (object, expectedClass, { moduleName, className, funcName,
    paramName, isReturnValueProblem }) => {
    if (!(object instanceof expectedClass)) {
      throw new WorkboxError('incorrect-class', { paramName, expectedClass,
        moduleName, className, funcName, isReturnValueProblem });
    }
  };

  const isOneOf = (value, validValues, { paramName }) => {
    if (!validValues.includes(value)) {
      throw new WorkboxError('invalid-value', {
        paramName,
        value,
        validValueDescription: `Valid values are ${JSON.stringify(validValues)}.`
      });
    }
  };

  const isArrayOfClass = (value, expectedClass, { moduleName, className, funcName, paramName }) => {
    const error = new WorkboxError('not-array-of-class', {
      value, expectedClass,
      moduleName, className, funcName, paramName
    });
    if (!Array.isArray(value)) {
      throw error;
    }

    for (let item of value) {
      if (!(item instanceof expectedClass)) {
        throw error;
      }
    }
  };

  const finalAssertExports = {
    hasMethod,
    isArray,
    isInstance,
    isOneOf,
    isSwEnv,
    isType,
    isArrayOfClass
  };

  /**
   * Runs all of the callback functions, one at a time sequentially, in the order
   * in which they were registered.
   *
   * @memberof workbox.core
   * @private
   */
  let executeQuotaErrorCallbacks = (() => {
    var _ref = babelHelpers.asyncToGenerator(function* () {
      {
        defaultExport.log(`About to run ${callbacks.size} callbacks to clean up caches.`);
      }

      for (const callback of callbacks) {
        yield callback();
        {
          defaultExport.log(callback, 'is complete.');
        }
      }

      {
        defaultExport.log('Finished running callbacks.');
      }
    });

    return function executeQuotaErrorCallbacks() {
      return _ref.apply(this, arguments);
    };
  })();

  const callbacks = new Set();

  /**
   * Adds a function to the set of callbacks that will be executed when there's
   * a quota error.
   *
   * @param {Function} callback
   * @memberof workbox.core
   */
  function registerQuotaErrorCallback(callback) {
    {
      finalAssertExports.isType(callback, 'function', {
        moduleName: 'workbox-core',
        funcName: 'register',
        paramName: 'callback'
      });
    }

    callbacks.add(callback);

    {
      defaultExport.log('Registered a callback to respond to quota errors.', callback);
    }
  }

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * A class that wraps common IndexedDB functionality in a promise-based API.
   * It exposes all the underlying power and functionality of IndexedDB, but
   * wraps the most commonly used features in a way that's much simpler to use.
   *
   * @private
   */
  class DBWrapper {
    /**
     * @param {string} name
     * @param {number} version
     * @param {Object=} [callback]
     * @param {function(this:DBWrapper, Event)} [callbacks.onupgradeneeded]
     * @param {function(this:DBWrapper, Event)} [callbacks.onversionchange]
     *     Defaults to DBWrapper.prototype._onversionchange when not specified.
     */
    constructor(name, version, {
      onupgradeneeded,
      onversionchange = this._onversionchange
    } = {}) {
      this._name = name;
      this._version = version;
      this._onupgradeneeded = onupgradeneeded;
      this._onversionchange = onversionchange;

      // If this is null, it means the database isn't open.
      this._db = null;
    }

    /**
     * Opens a connected to an IDBDatabase, invokes any onupgradedneeded
     * callback, and added an onversionchange callback to the database.
     *
     * @return {IDBDatabase}
     *
     * @private
     */
    open() {
      var _this = this;

      return babelHelpers.asyncToGenerator(function* () {
        if (_this._db) return;

        _this._db = yield new Promise(function (resolve, reject) {
          // This flag is flipped to true if the timeout callback runs prior
          // to the request failing or succeeding. Note: we use a timeout instead
          // of an onblocked handler since there are cases where onblocked will
          // never never run. A timeout better handles all possible scenarios:
          // https://github.com/w3c/IndexedDB/issues/223
          let openRequestTimedOut = false;
          setTimeout(function () {
            openRequestTimedOut = true;
            reject(new Error('The open request was blocked and timed out'));
          }, _this.OPEN_TIMEOUT);

          const openRequest = indexedDB.open(_this._name, _this._version);
          openRequest.onerror = function (evt) {
            return reject(openRequest.error);
          };
          openRequest.onupgradeneeded = function (evt) {
            if (openRequestTimedOut) {
              openRequest.transaction.abort();
              evt.target.result.close();
            } else if (_this._onupgradeneeded) {
              _this._onupgradeneeded(evt);
            }
          };
          openRequest.onsuccess = function (evt) {
            const db = evt.target.result;
            if (openRequestTimedOut) {
              db.close();
            } else {
              db.onversionchange = _this._onversionchange;
              resolve(db);
            }
          };
        });

        return _this;
      })();
    }

    /**
     * Delegates to the native `get()` method for the object store.
     *
     * @param {string} storeName The name of the object store to put the value.
     * @param {...*} args The values passed to the delegated method.
     * @return {*} The key of the entry.
     *
     * @private
     */
    get(storeName, ...args) {
      var _this2 = this;

      return babelHelpers.asyncToGenerator(function* () {
        return yield _this2._call('get', storeName, 'readonly', ...args);
      })();
    }

    /**
     * Delegates to the native `add()` method for the object store.
     *
     * @param {string} storeName The name of the object store to put the value.
     * @param {...*} args The values passed to the delegated method.
     * @return {*} The key of the entry.
     *
     * @private
     */
    add(storeName, ...args) {
      var _this3 = this;

      return babelHelpers.asyncToGenerator(function* () {
        return yield _this3._call('add', storeName, 'readwrite', ...args);
      })();
    }

    /**
     * Delegates to the native `put()` method for the object store.
     *
     * @param {string} storeName The name of the object store to put the value.
     * @param {...*} args The values passed to the delegated method.
     * @return {*} The key of the entry.
     *
     * @private
     */
    put(storeName, ...args) {
      var _this4 = this;

      return babelHelpers.asyncToGenerator(function* () {
        return yield _this4._call('put', storeName, 'readwrite', ...args);
      })();
    }

    /**
     * Delegates to the native `delete()` method for the object store.
     *
     * @param {string} storeName
     * @param {...*} args The values passed to the delegated method.
     *
     * @private
     */
    delete(storeName, ...args) {
      var _this5 = this;

      return babelHelpers.asyncToGenerator(function* () {
        yield _this5._call('delete', storeName, 'readwrite', ...args);
      })();
    }

    /**
     * Deletes the underlying database, ensuring that any open connections are
     * closed first.
     *
     * @private
     */
    deleteDatabase() {
      var _this6 = this;

      return babelHelpers.asyncToGenerator(function* () {
        _this6.close();
        _this6._db = null;
        yield new Promise(function (resolve, reject) {
          const request = indexedDB.deleteDatabase(_this6._name);
          request.onerror = function (evt) {
            return reject(evt.target.error);
          };
          request.onblocked = function () {
            return reject(new Error('Deletion was blocked.'));
          };
          request.onsuccess = function () {
            return resolve();
          };
        });
      })();
    }

    /**
     * Delegates to the native `getAll()` or polyfills it via the `find()`
     * method in older browsers.
     *
     * @param {string} storeName
     * @param {*} query
     * @param {number} count
     * @return {Array}
     *
     * @private
     */
    getAll(storeName, query, count) {
      var _this7 = this;

      return babelHelpers.asyncToGenerator(function* () {
        if ('getAll' in IDBObjectStore.prototype) {
          return yield _this7._call('getAll', storeName, 'readonly', query, count);
        } else {
          return yield _this7.getAllMatching(storeName, { query, count });
        }
      })();
    }

    /**
     * Supports flexible lookup in an object store by specifying an index,
     * query, direction, and count. This method returns an array of objects
     * with the signature .
     *
     * @param {string} storeName
     * @param {Object} [opts]
     * @param {IDBCursorDirection} [opts.direction]
     * @param {*} [opts.query]
     * @param {string} [opts.index] The index to use (if specified).
     * @param {number} [opts.count] The max number of results to return.
     * @param {boolean} [opts.includeKeys] When true, the structure of the
     *     returned objects is changed from an array of values to an array of
     *     objects in the form {key, primaryKey, value}.
     * @return {Array}
     *
     * @private
     */
    getAllMatching(storeName, opts = {}) {
      var _this8 = this;

      return babelHelpers.asyncToGenerator(function* () {
        return yield _this8.transaction([storeName], 'readonly', function (stores, done) {
          const store = stores[storeName];
          const target = opts.index ? store.index(opts.index) : store;
          const results = [];

          // Passing `undefined` arguments to Edge's `openCursor(...)` causes
          // 'DOMException: DataError'
          // Details in issue: https://github.com/GoogleChrome/workbox/issues/1509
          const query = opts.query || null;
          const direction = opts.direction || 'next';
          target.openCursor(query, direction).onsuccess = function (evt) {
            const cursor = evt.target.result;
            if (cursor) {
              const { primaryKey, key, value } = cursor;
              results.push(opts.includeKeys ? { primaryKey, key, value } : value);
              if (opts.count && results.length >= opts.count) {
                done(results);
              } else {
                cursor.continue();
              }
            } else {
              done(results);
            }
          };
        });
      })();
    }

    /**
     * Accepts a list of stores, a transaction type, and a callback and
     * performs a transaction. A promise is returned that resolves to whatever
     * value the callback chooses. The callback holds all the transaction logic
     * and is invoked with three arguments:
     *   1. An object mapping object store names to IDBObjectStore values.
     *   2. A `done` function, that's used to resolve the promise when
     *      when the transaction is done.
     *   3. An `abort` function that can be called to abort the transaction
     *      at any time.
     *
     * @param {Array<string>} storeNames An array of object store names
     *     involved in the transaction.
     * @param {string} type Can be `readonly` or `readwrite`.
     * @param {function(Object, function(), function(*)):?IDBRequest} callback
     * @return {*} The result of the transaction ran by the callback.
     *
     * @private
     */
    transaction(storeNames, type, callback) {
      var _this9 = this;

      return babelHelpers.asyncToGenerator(function* () {
        yield _this9.open();
        const result = yield new Promise(function (resolve, reject) {
          const txn = _this9._db.transaction(storeNames, type);
          const done = function (value) {
            return resolve(value);
          };
          const abort = function () {
            reject(new Error('The transaction was manually aborted'));
            txn.abort();
          };
          txn.onerror = function (evt) {
            return reject(evt.target.error);
          };
          txn.onabort = function (evt) {
            return reject(evt.target.error);
          };
          txn.oncomplete = function () {
            return resolve();
          };

          const stores = {};
          for (const storeName of storeNames) {
            stores[storeName] = txn.objectStore(storeName);
          }
          callback(stores, done, abort);
        });
        return result;
      })();
    }

    /**
     * Delegates async to a native IDBObjectStore method.
     *
     * @param {string} method The method name.
     * @param {string} storeName The object store name.
     * @param {string} type Can be `readonly` or `readwrite`.
     * @param {...*} args The list of args to pass to the native method.
     * @return {*} The result of the transaction.
     *
     * @private
     */
    _call(method, storeName, type, ...args) {
      var _this10 = this;

      return babelHelpers.asyncToGenerator(function* () {
        yield _this10.open();
        const callback = function (stores, done) {
          stores[storeName][method](...args).onsuccess = function (evt) {
            done(evt.target.result);
          };
        };

        return yield _this10.transaction([storeName], type, callback);
      })();
    }

    /**
     * The default onversionchange handler, which closes the database so other
     * connections can open without being blocked.
     *
     * @param {Event} evt
     *
     * @private
     */
    _onversionchange(evt) {
      this.close();
    }

    /**
     * Closes the connection opened by `DBWrapper.open()`. Generally this method
     * doesn't need to be called since:
     *   1. It's usually better to keep a connection open since opening
     *      a new connection is somewhat slow.
     *   2. Connections are automatically closed when the reference is
     *      garbage collected.
     * The primary use case for needing to close a connection is when another
     * reference (typically in another tab) needs to upgrade it and would be
     * blocked by the current, open connection.
     *
     * @private
     */
    close() {
      if (this._db) this._db.close();
    }
  }

  // Exposed to let users modify the default timeout on a per-instance
  // or global basis.
  DBWrapper.prototype.OPEN_TIMEOUT = 2000;

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  const _cacheNameDetails = {
    prefix: 'workbox',
    suffix: self.registration.scope,
    googleAnalytics: 'googleAnalytics',
    precache: 'precache',
    runtime: 'runtime'
  };

  const _createCacheName = cacheName => {
    return [_cacheNameDetails.prefix, cacheName, _cacheNameDetails.suffix].filter(value => value.length > 0).join('-');
  };

  const cacheNames = {
    updateDetails: details => {
      Object.keys(_cacheNameDetails).forEach(key => {
        if (typeof details[key] !== 'undefined') {
          _cacheNameDetails[key] = details[key];
        }
      });
    },
    getGoogleAnalyticsName: userCacheName => {
      return userCacheName || _createCacheName(_cacheNameDetails.googleAnalytics);
    },
    getPrecacheName: userCacheName => {
      return userCacheName || _createCacheName(_cacheNameDetails.precache);
    },
    getRuntimeName: userCacheName => {
      return userCacheName || _createCacheName(_cacheNameDetails.runtime);
    }
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  var pluginEvents = {
    CACHE_DID_UPDATE: 'cacheDidUpdate',
    CACHE_WILL_UPDATE: 'cacheWillUpdate',
    CACHED_RESPONSE_WILL_BE_USED: 'cachedResponseWillBeUsed',
    FETCH_DID_FAIL: 'fetchDidFail',
    REQUEST_WILL_FETCH: 'requestWillFetch'
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  var pluginUtils = {
    filter: (plugins, callbackname) => {
      return plugins.filter(plugin => callbackname in plugin);
    }
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  const getFriendlyURL = url => {
    const urlObj = new URL(url, location);
    if (urlObj.origin === location.origin) {
      return urlObj.pathname;
    }
    return urlObj.href;
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * Wrapper around cache.put().
   *
   * Will call `cacheDidUpdate` on plugins if the cache was updated.
   *
   * @param {Object} options
   * @param {string} options.cacheName
   * @param {Request} options.request
   * @param {Response} options.response
   * @param {Event} [options.event]
   * @param {Array<Object>} [options.plugins=[]]
   *
   * @private
   * @memberof module:workbox-core
   */
  const putWrapper = (() => {
    var _ref = babelHelpers.asyncToGenerator(function* ({
      cacheName,
      request,
      response,
      event,
      plugins = []
    } = {}) {
      if (!response) {
        {
          defaultExport.error(`Cannot cache non-existent response for ` + `'${getFriendlyURL(request.url)}'.`);
        }

        throw new WorkboxError('cache-put-with-no-response', {
          url: getFriendlyURL(request.url)
        });
      }

      let responseToCache = yield _isResponseSafeToCache({ request, response, event, plugins });

      if (!responseToCache) {
        {
          defaultExport.debug(`Response '${getFriendlyURL(request.url)}' will not be ` + `cached.`, responseToCache);
        }
        return;
      }

      {
        if (responseToCache.method && responseToCache.method !== 'GET') {
          throw new WorkboxError('attempt-to-cache-non-get-request', {
            url: getFriendlyURL(request.url),
            method: responseToCache.method
          });
        }
      }

      const cache = yield caches.open(cacheName);

      const updatePlugins = pluginUtils.filter(plugins, pluginEvents.CACHE_DID_UPDATE);

      let oldResponse = updatePlugins.length > 0 ? yield matchWrapper({ cacheName, request }) : null;

      {
        defaultExport.debug(`Updating the '${cacheName}' cache with a new Response for ` + `${getFriendlyURL(request.url)}.`);
      }

      try {
        yield cache.put(request, responseToCache);
      } catch (error) {
        // See https://developer.mozilla.org/en-US/docs/Web/API/DOMException#exception-QuotaExceededError
        if (error.name === 'QuotaExceededError') {
          yield executeQuotaErrorCallbacks();
        }
        throw error;
      }

      for (let plugin of updatePlugins) {
        yield plugin[pluginEvents.CACHE_DID_UPDATE].call(plugin, {
          cacheName,
          request,
          event,
          oldResponse,
          newResponse: responseToCache
        });
      }
    });

    return function putWrapper() {
      return _ref.apply(this, arguments);
    };
  })();

  /**
   * This is a wrapper around cache.match().
   *
   * @param {Object} options
   * @param {string} options.cacheName Name of the cache to match against.
   * @param {Request} options.request The Request that will be used to look up
   *.    cache entries.
   * @param {Event} [options.event] The event that propted the action.
   * @param {Object} [options.matchOptions] Options passed to cache.match().
   * @param {Array<Object>} [options.plugins=[]] Array of plugins.
   * @return {Response} A cached response if available.
   *
   * @private
   * @memberof module:workbox-core
   */
  const matchWrapper = (() => {
    var _ref2 = babelHelpers.asyncToGenerator(function* ({
      cacheName,
      request,
      event,
      matchOptions,
      plugins = [] }) {
      const cache = yield caches.open(cacheName);
      let cachedResponse = yield cache.match(request, matchOptions);
      {
        if (cachedResponse) {
          defaultExport.debug(`Found a cached response in '${cacheName}'.`);
        } else {
          defaultExport.debug(`No cached response found in '${cacheName}'.`);
        }
      }
      for (let plugin of plugins) {
        if (pluginEvents.CACHED_RESPONSE_WILL_BE_USED in plugin) {
          cachedResponse = yield plugin[pluginEvents.CACHED_RESPONSE_WILL_BE_USED].call(plugin, {
            cacheName,
            request,
            event,
            matchOptions,
            cachedResponse
          });
          {
            if (cachedResponse) {
              finalAssertExports.isInstance(cachedResponse, Response, {
                moduleName: 'Plugin',
                funcName: pluginEvents.CACHED_RESPONSE_WILL_BE_USED,
                isReturnValueProblem: true
              });
            }
          }
        }
      }
      return cachedResponse;
    });

    return function matchWrapper(_x) {
      return _ref2.apply(this, arguments);
    };
  })();

  /**
   * This method will call cacheWillUpdate on the available plugins (or use
   * response.ok) to determine if the Response is safe and valid to cache.
   *
   * @param {Object} options
   * @param {Request} options.request
   * @param {Response} options.response
   * @param {Event} [options.event]
   * @param {Array<Object>} [options.plugins=[]]
   * @return {Promise<Response>}
   *
   * @private
   * @memberof module:workbox-core
   */
  const _isResponseSafeToCache = (() => {
    var _ref3 = babelHelpers.asyncToGenerator(function* ({ request, response, event, plugins }) {
      let responseToCache = response;
      let pluginsUsed = false;
      for (let plugin of plugins) {
        if (pluginEvents.CACHE_WILL_UPDATE in plugin) {
          pluginsUsed = true;
          responseToCache = yield plugin[pluginEvents.CACHE_WILL_UPDATE].call(plugin, {
            request,
            response: responseToCache,
            event
          });

          {
            if (responseToCache) {
              finalAssertExports.isInstance(responseToCache, Response, {
                moduleName: 'Plugin',
                funcName: pluginEvents.CACHE_WILL_UPDATE,
                isReturnValueProblem: true
              });
            }
          }

          if (!responseToCache) {
            break;
          }
        }
      }

      if (!pluginsUsed) {
        {
          if (!responseToCache.ok) {
            if (responseToCache.status === 0) {
              defaultExport.warn(`The response for '${request.url}' is an opaque ` + `response. The caching strategy that you're using will not ` + `cache opaque responses by default.`);
            } else {
              defaultExport.debug(`The response for '${request.url}' returned ` + `a status code of '${response.status}' and won't be cached as a ` + `result.`);
            }
          }
        }
        responseToCache = responseToCache.ok ? responseToCache : null;
      }

      return responseToCache ? responseToCache : null;
    });

    return function _isResponseSafeToCache(_x2) {
      return _ref3.apply(this, arguments);
    };
  })();

  const cacheWrapper = {
    put: putWrapper,
    match: matchWrapper
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * Wrapper around the fetch API.
   *
   * Will call requestWillFetch on available plugins.
   *
   * @param {Object} options
   * @param {Request|string} options.request
   * @param {Object} [options.fetchOptions]
   * @param {Event} [options.event]
   * @param {Array<Object>} [options.plugins=[]]
   * @return {Promise<Response>}
   *
   * @private
   * @memberof module:workbox-core
   */
  const wrappedFetch = (() => {
    var _ref = babelHelpers.asyncToGenerator(function* ({
      request,
      fetchOptions,
      event,
      plugins = [] }) {
      // We *should* be able to call `await event.preloadResponse` even if it's
      // undefined, but for some reason, doing so leads to errors in our Node unit
      // tests. To work around that, explicitly check preloadResponse's value first.
      if (event && event.preloadResponse) {
        const possiblePreloadResponse = yield event.preloadResponse;
        if (possiblePreloadResponse) {
          {
            defaultExport.log(`Using a preloaded navigation response for ` + `'${getFriendlyURL(request.url)}'`);
          }
          return possiblePreloadResponse;
        }
      }

      if (typeof request === 'string') {
        request = new Request(request);
      }

      {
        finalAssertExports.isInstance(request, Request, {
          paramName: request,
          expectedClass: 'Request',
          moduleName: 'workbox-core',
          className: 'fetchWrapper',
          funcName: 'wrappedFetch'
        });
      }

      const failedFetchPlugins = pluginUtils.filter(plugins, pluginEvents.FETCH_DID_FAIL);

      // If there is a fetchDidFail plugin, we need to save a clone of the
      // original request before it's either modified by a requestWillFetch
      // plugin or before the original request's body is consumed via fetch().
      const originalRequest = failedFetchPlugins.length > 0 ? request.clone() : null;

      try {
        for (let plugin of plugins) {
          if (pluginEvents.REQUEST_WILL_FETCH in plugin) {
            request = yield plugin[pluginEvents.REQUEST_WILL_FETCH].call(plugin, {
              request: request.clone(),
              event
            });

            {
              if (request) {
                finalAssertExports.isInstance(request, Request, {
                  moduleName: 'Plugin',
                  funcName: pluginEvents.CACHED_RESPONSE_WILL_BE_USED,
                  isReturnValueProblem: true
                });
              }
            }
          }
        }
      } catch (err) {
        throw new WorkboxError('plugin-error-request-will-fetch', {
          thrownError: err
        });
      }

      // The request can be altered by plugins with `requestWillFetch` making
      // the original request (Most likely from a `fetch` event) to be different
      // to the Request we make. Pass both to `fetchDidFail` to aid debugging.
      const pluginFilteredRequest = request.clone();

      try {
        const fetchResponse = yield fetch(request, fetchOptions);
        {
          defaultExport.debug(`Network request for ` + `'${getFriendlyURL(request.url)}' returned a response with ` + `status '${fetchResponse.status}'.`);
        }
        return fetchResponse;
      } catch (error) {
        {
          defaultExport.error(`Network request for ` + `'${getFriendlyURL(request.url)}' threw an error.`, error);
        }

        for (let plugin of failedFetchPlugins) {
          yield plugin[pluginEvents.FETCH_DID_FAIL].call(plugin, {
            error,
            event,
            originalRequest: originalRequest.clone(),
            request: pluginFilteredRequest.clone()
          });
        }

        throw error;
      }
    });

    return function wrappedFetch(_x) {
      return _ref.apply(this, arguments);
    };
  })();

  const fetchWrapper = {
    fetch: wrappedFetch
  };

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  var _private = /*#__PURE__*/Object.freeze({
    DBWrapper: DBWrapper,
    WorkboxError: WorkboxError,
    assert: finalAssertExports,
    cacheNames: cacheNames,
    cacheWrapper: cacheWrapper,
    fetchWrapper: fetchWrapper,
    getFriendlyURL: getFriendlyURL,
    logger: defaultExport
  });

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * Logs a warning to the user recommending changing
   * to max-age=0 or no-cache.
   *
   * @param {string} cacheControlHeader
   *
   * @private
   */
  function showWarning(cacheControlHeader) {
    const docsUrl = 'https://developers.google.com/web/tools/workbox/guides/service-worker-checklist#cache-control_of_your_service_worker_file';
    defaultExport.warn(`You are setting a 'cache-control' header of ` + `'${cacheControlHeader}' on your service worker file. This should be ` + `set to 'max-age=0' or 'no-cache' to ensure the latest service worker ` + `is served to your users. Learn more here: ${docsUrl}`);
  }

  /**
   * Checks for cache-control header on SW file and
   * warns the developer if it exists with a value
   * other than max-age=0 or no-cache.
   *
   * @return {Promise}
   * @private
   */
  function checkSWFileCacheHeaders() {
    // This is wrapped as an iife to allow async/await while making
    //  rollup exclude it in builds.
    return babelHelpers.asyncToGenerator(function* () {
      try {
        const swFile = self.location.href;
        const response = yield fetch(swFile);
        if (!response.ok) {
          // Response failed so nothing we can check;
          return;
        }

        if (!response.headers.has('cache-control')) {
          // No cache control header.
          return;
        }

        const cacheControlHeader = response.headers.get('cache-control');
        const maxAgeResult = /max-age\s*=\s*(\d*)/g.exec(cacheControlHeader);
        if (maxAgeResult) {
          if (parseInt(maxAgeResult[1], 10) === 0) {
            return;
          }
        }

        if (cacheControlHeader.indexOf('no-cache') !== -1) {
          return;
        }

        if (cacheControlHeader.indexOf('no-store') !== -1) {
          return;
        }

        showWarning(cacheControlHeader);
      } catch (err) {
        // NOOP
      }
    })();
  }

  const finalCheckSWFileCacheHeaders = checkSWFileCacheHeaders;

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  /**
   * This class is never exposed publicly. Inidividual methods are exposed
   * using jsdoc alias commands.
   *
   * @memberof workbox.core
   * @private
   */
  class WorkboxCore {
    /**
     * You should not instantiate this object directly.
     *
     * @private
     */
    constructor() {
      // Give our version strings something to hang off of.
      try {
        self.workbox.v = self.workbox.v || {};
      } catch (err) {}
      // NOOP


      // A WorkboxCore instance must be exported before we can use the logger.
      // This is so it can get the current log level.
      {
        const padding = '   ';
        defaultExport.groupCollapsed('Welcome to Workbox!');
        defaultExport.unprefixed.log(`You are currently using a development build. ` + `By default this will switch to prod builds when not on localhost. ` + `You can force this with workbox.setConfig({debug: true|false}).`);
        defaultExport.unprefixed.log(`📖 Read the guides and documentation\n` + `${padding}https://developers.google.com/web/tools/workbox/`);
        defaultExport.unprefixed.log(`❓ Use the [workbox] tag on Stack Overflow to ask questions\n` + `${padding}https://stackoverflow.com/questions/ask?tags=workbox`);
        defaultExport.unprefixed.log(`🐛 Found a bug? Report it on GitHub\n` + `${padding}https://github.com/GoogleChrome/workbox/issues/new`);
        defaultExport.groupEnd();

        if (typeof finalCheckSWFileCacheHeaders === 'function') {
          finalCheckSWFileCacheHeaders();
        }
      }
    }

    /**
     * Get the current cache names used by Workbox.
     *
     * `cacheNames.precache` is used for precached assets,
     * `cacheNames.googleAnalytics` is used by `workbox-google-analytics` to
     * store `analytics.js`,
     * and `cacheNames.runtime` is used for everything else.
     *
     * @return {Object} An object with `precache` and `runtime` cache names.
     *
     * @alias workbox.core.cacheNames
     */
    get cacheNames() {
      return {
        googleAnalytics: cacheNames.getGoogleAnalyticsName(),
        precache: cacheNames.getPrecacheName(),
        runtime: cacheNames.getRuntimeName()
      };
    }

    /**
     * You can alter the default cache names used by the Workbox modules by
     * changing the cache name details.
     *
     * Cache names are generated as `<prefix>-<Cache Name>-<suffix>`.
     *
     * @param {Object} details
     * @param {Object} details.prefix The string to add to the beginning of
     * the precache and runtime cache names.
     * @param {Object} details.suffix The string to add to the end of
     * the precache and runtime cache names.
     * @param {Object} details.precache The cache name to use for precache
     * caching.
     * @param {Object} details.runtime The cache name to use for runtime caching.
     * @param {Object} details.googleAnalytics The cache name to use for
     * `workbox-google-analytics` caching.
     *
     * @alias workbox.core.setCacheNameDetails
     */
    setCacheNameDetails(details) {
      {
        Object.keys(details).forEach(key => {
          finalAssertExports.isType(details[key], 'string', {
            moduleName: 'workbox-core',
            className: 'WorkboxCore',
            funcName: 'setCacheNameDetails',
            paramName: `details.${key}`
          });
        });

        if ('precache' in details && details.precache.length === 0) {
          throw new WorkboxError('invalid-cache-name', {
            cacheNameId: 'precache',
            value: details.precache
          });
        }

        if ('runtime' in details && details.runtime.length === 0) {
          throw new WorkboxError('invalid-cache-name', {
            cacheNameId: 'runtime',
            value: details.runtime
          });
        }

        if ('googleAnalytics' in details && details.googleAnalytics.length === 0) {
          throw new WorkboxError('invalid-cache-name', {
            cacheNameId: 'googleAnalytics',
            value: details.googleAnalytics
          });
        }
      }

      cacheNames.updateDetails(details);
    }

    /**
     * Get the current log level.
     *
     * @return {number}.
     *
     * @alias workbox.core.logLevel
     */
    get logLevel() {
      return getLoggerLevel();
    }

    /**
     * Set the current log level passing in one of the values from
     * [LOG_LEVELS]{@link module:workbox-core.LOG_LEVELS}.
     *
     * @param {number} newLevel The new log level to use.
     *
     * @alias workbox.core.setLogLevel
     */
    setLogLevel(newLevel) {
      {
        finalAssertExports.isType(newLevel, 'number', {
          moduleName: 'workbox-core',
          className: 'WorkboxCore',
          funcName: 'logLevel [setter]',
          paramName: `logLevel`
        });
      }

      if (newLevel > LOG_LEVELS.silent || newLevel < LOG_LEVELS.debug) {
        throw new WorkboxError('invalid-value', {
          paramName: 'logLevel',
          validValueDescription: `Please use a value from LOG_LEVELS, i.e ` + `'logLevel = workbox.core.LOG_LEVELS.debug'.`,
          value: newLevel
        });
      }

      setLoggerLevel(newLevel);
    }
  }

  var defaultExport$1 = new WorkboxCore();

  /*
    Copyright 2017 Google Inc.

    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

        https://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.
  */

  const finalExports = Object.assign(defaultExport$1, {
    _private,
    LOG_LEVELS,
    registerQuotaErrorCallback
  });

  return finalExports;

}());

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