workbox-cdn/workbox/workbox-cacheable-response.dev.js

this.workbox = this.workbox || {};
this.workbox.cacheableResponse = (function (exports, assert_js, WorkboxError_js, getFriendlyURL_js, logger_js) {
    'use strict';

    try {
      self['workbox:cacheable-response:5.1.4'] && _();
    } catch (e) {}

    /*
      Copyright 2018 Google LLC

      Use of this source code is governed by an MIT-style
      license that can be found in the LICENSE file or at
      https://opensource.org/licenses/MIT.
    */
    /**
     * This class allows you to set up rules determining what
     * status codes and/or headers need to be present in order for a
     * [`Response`](https://developer.mozilla.org/en-US/docs/Web/API/Response)
     * to be considered cacheable.
     *
     * @memberof module:workbox-cacheable-response
     */

    class CacheableResponse {
      /**
       * To construct a new CacheableResponse instance you must provide at least
       * one of the `config` properties.
       *
       * If both `statuses` and `headers` are specified, then both conditions must
       * be met for the `Response` to be considered cacheable.
       *
       * @param {Object} config
       * @param {Array<number>} [config.statuses] One or more status codes that a
       * `Response` can have and be considered cacheable.
       * @param {Object<string,string>} [config.headers] A mapping of header names
       * and expected values that a `Response` can have and be considered cacheable.
       * If multiple headers are provided, only one needs to be present.
       */
      constructor(config = {}) {
        {
          if (!(config.statuses || config.headers)) {
            throw new WorkboxError_js.WorkboxError('statuses-or-headers-required', {
              moduleName: 'workbox-cacheable-response',
              className: 'CacheableResponse',
              funcName: 'constructor'
            });
          }

          if (config.statuses) {
            assert_js.assert.isArray(config.statuses, {
              moduleName: 'workbox-cacheable-response',
              className: 'CacheableResponse',
              funcName: 'constructor',
              paramName: 'config.statuses'
            });
          }

          if (config.headers) {
            assert_js.assert.isType(config.headers, 'object', {
              moduleName: 'workbox-cacheable-response',
              className: 'CacheableResponse',
              funcName: 'constructor',
              paramName: 'config.headers'
            });
          }
        }

        this._statuses = config.statuses;
        this._headers = config.headers;
      }
      /**
       * Checks a response to see whether it's cacheable or not, based on this
       * object's configuration.
       *
       * @param {Response} response The response whose cacheability is being
       * checked.
       * @return {boolean} `true` if the `Response` is cacheable, and `false`
       * otherwise.
       */


      isResponseCacheable(response) {
        {
          assert_js.assert.isInstance(response, Response, {
            moduleName: 'workbox-cacheable-response',
            className: 'CacheableResponse',
            funcName: 'isResponseCacheable',
            paramName: 'response'
          });
        }

        let cacheable = true;

        if (this._statuses) {
          cacheable = this._statuses.includes(response.status);
        }

        if (this._headers && cacheable) {
          cacheable = Object.keys(this._headers).some(headerName => {
            return response.headers.get(headerName) === this._headers[headerName];
          });
        }

        {
          if (!cacheable) {
            logger_js.logger.groupCollapsed(`The request for ` + `'${getFriendlyURL_js.getFriendlyURL(response.url)}' returned a response that does ` + `not meet the criteria for being cached.`);
            logger_js.logger.groupCollapsed(`View cacheability criteria here.`);
            logger_js.logger.log(`Cacheable statuses: ` + JSON.stringify(this._statuses));
            logger_js.logger.log(`Cacheable headers: ` + JSON.stringify(this._headers, null, 2));
            logger_js.logger.groupEnd();
            const logFriendlyHeaders = {};
            response.headers.forEach((value, key) => {
              logFriendlyHeaders[key] = value;
            });
            logger_js.logger.groupCollapsed(`View response status and headers here.`);
            logger_js.logger.log(`Response status: ` + response.status);
            logger_js.logger.log(`Response headers: ` + JSON.stringify(logFriendlyHeaders, null, 2));
            logger_js.logger.groupEnd();
            logger_js.logger.groupCollapsed(`View full response details here.`);
            logger_js.logger.log(response.headers);
            logger_js.logger.log(response);
            logger_js.logger.groupEnd();
            logger_js.logger.groupEnd();
          }
        }

        return cacheable;
      }

    }

    /*
      Copyright 2018 Google LLC

      Use of this source code is governed by an MIT-style
      license that can be found in the LICENSE file or at
      https://opensource.org/licenses/MIT.
    */
    /**
     * A class implementing the `cacheWillUpdate` lifecycle callback. This makes it
     * easier to add in cacheability checks to requests made via Workbox's built-in
     * strategies.
     *
     * @memberof module:workbox-cacheable-response
     */

    class CacheableResponsePlugin {
      /**
       * To construct a new CacheableResponsePlugin instance you must provide at
       * least one of the `config` properties.
       *
       * If both `statuses` and `headers` are specified, then both conditions must
       * be met for the `Response` to be considered cacheable.
       *
       * @param {Object} config
       * @param {Array<number>} [config.statuses] One or more status codes that a
       * `Response` can have and be considered cacheable.
       * @param {Object<string,string>} [config.headers] A mapping of header names
       * and expected values that a `Response` can have and be considered cacheable.
       * If multiple headers are provided, only one needs to be present.
       */
      constructor(config) {
        /**
         * @param {Object} options
         * @param {Response} options.response
         * @return {Response|null}
         * @private
         */
        this.cacheWillUpdate = async ({
          response
        }) => {
          if (this._cacheableResponse.isResponseCacheable(response)) {
            return response;
          }

          return null;
        };

        this._cacheableResponse = new CacheableResponse(config);
      }

    }

    exports.CacheableResponse = CacheableResponse;
    exports.CacheableResponsePlugin = CacheableResponsePlugin;

    return exports;

}({}, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private));