hexo/node_modules/workbox-background-sync/lib/StorableRequest.js

122 lines
4.0 KiB
JavaScript

/*
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 '../_version.js';
const serializableProperties = [
'method',
'referrer',
'referrerPolicy',
'mode',
'credentials',
'cache',
'redirect',
'integrity',
'keepalive',
];
/**
* A class to make it easier to serialize and de-serialize requests so they
* can be stored in IndexedDB.
*
* Most developers will not need to access this class directly;
* it is exposed for advanced use cases.
*/
class StorableRequest {
/**
* Accepts an object of request data that can be used to construct a
* `Request` but can also be stored in IndexedDB.
*
* @param {Object} requestData An object of request data that includes the
* `url` plus any relevant properties of
* [requestInit]{@link https://fetch.spec.whatwg.org/#requestinit}.
*/
constructor(requestData) {
if (process.env.NODE_ENV !== 'production') {
assert.isType(requestData, 'object', {
moduleName: 'workbox-background-sync',
className: 'StorableRequest',
funcName: 'constructor',
paramName: 'requestData',
});
assert.isType(requestData.url, 'string', {
moduleName: 'workbox-background-sync',
className: 'StorableRequest',
funcName: 'constructor',
paramName: 'requestData.url',
});
}
// If the request's mode is `navigate`, convert it to `same-origin` since
// navigation requests can't be constructed via script.
if (requestData['mode'] === 'navigate') {
requestData['mode'] = 'same-origin';
}
this._requestData = requestData;
}
/**
* Converts a Request object to a plain object that can be structured
* cloned or JSON-stringified.
*
* @param {Request} request
* @return {Promise<StorableRequest>}
*/
static async fromRequest(request) {
const requestData = {
url: request.url,
headers: {},
};
// Set the body if present.
if (request.method !== 'GET') {
// Use ArrayBuffer to support non-text request bodies.
// NOTE: we can't use Blobs becuse Safari doesn't support storing
// Blobs in IndexedDB in some cases:
// https://github.com/dfahlander/Dexie.js/issues/618#issuecomment-398348457
requestData.body = await request.clone().arrayBuffer();
}
// Convert the headers from an iterable to an object.
for (const [key, value] of request.headers.entries()) {
requestData.headers[key] = value;
}
// Add all other serializable request properties
for (const prop of serializableProperties) {
if (request[prop] !== undefined) {
requestData[prop] = request[prop];
}
}
return new StorableRequest(requestData);
}
/**
* Returns a deep clone of the instances `_requestData` object.
*
* @return {Object}
*/
toObject() {
const requestData = Object.assign({}, this._requestData);
requestData.headers = Object.assign({}, this._requestData.headers);
if (requestData.body) {
requestData.body = requestData.body.slice(0);
}
return requestData;
}
/**
* Converts this instance to a Request.
*
* @return {Request}
*/
toRequest() {
return new Request(this._requestData.url, this._requestData);
}
/**
* Creates and returns a deep clone of the instance.
*
* @return {StorableRequest}
*/
clone() {
return new StorableRequest(this.toObject());
}
}
export { StorableRequest };