the-forest/client/node_modules/workbox-cacheable-response/CacheableResponse.js

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2024-09-17 20:35:18 -04:00
/*
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.
*/
import { assert } from 'workbox-core/_private/assert.js';
import { WorkboxError } from 'workbox-core/_private/WorkboxError.js';
import { getFriendlyURL } from 'workbox-core/_private/getFriendlyURL.js';
import { logger } from 'workbox-core/_private/logger.js';
import './_version.js';
/**
* 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 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 (process.env.NODE_ENV !== 'production') {
if (!(config.statuses || config.headers)) {
throw new WorkboxError('statuses-or-headers-required', {
moduleName: 'workbox-cacheable-response',
className: 'CacheableResponse',
funcName: 'constructor',
});
}
if (config.statuses) {
assert.isArray(config.statuses, {
moduleName: 'workbox-cacheable-response',
className: 'CacheableResponse',
funcName: 'constructor',
paramName: 'config.statuses',
});
}
if (config.headers) {
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) {
if (process.env.NODE_ENV !== 'production') {
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 (process.env.NODE_ENV !== 'production') {
if (!cacheable) {
logger.groupCollapsed(`The request for ` +
`'${getFriendlyURL(response.url)}' returned a response that does ` +
`not meet the criteria for being cached.`);
logger.groupCollapsed(`View cacheability criteria here.`);
logger.log(`Cacheable statuses: ` + JSON.stringify(this._statuses));
logger.log(`Cacheable headers: ` + JSON.stringify(this._headers, null, 2));
logger.groupEnd();
const logFriendlyHeaders = {};
response.headers.forEach((value, key) => {
logFriendlyHeaders[key] = value;
});
logger.groupCollapsed(`View response status and headers here.`);
logger.log(`Response status: ${response.status}`);
logger.log(`Response headers: ` + JSON.stringify(logFriendlyHeaders, null, 2));
logger.groupEnd();
logger.groupCollapsed(`View full response details here.`);
logger.log(response.headers);
logger.log(response);
logger.groupEnd();
logger.groupEnd();
}
}
return cacheable;
}
}
export { CacheableResponse };