843 lines
20 KiB
JavaScript
843 lines
20 KiB
JavaScript
'use strict'
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const { kConstruct } = require('./symbols')
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const { urlEquals, fieldValues: getFieldValues } = require('./util')
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const { kEnumerableProperty, isDisturbed } = require('../core/util')
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const { kHeadersList } = require('../core/symbols')
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const { webidl } = require('../fetch/webidl')
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const { Response, cloneResponse } = require('../fetch/response')
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const { Request } = require('../fetch/request')
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const { kState, kHeaders, kGuard, kRealm } = require('../fetch/symbols')
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const { fetching } = require('../fetch/index')
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const { urlIsHttpHttpsScheme, createDeferredPromise, readAllBytes } = require('../fetch/util')
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const assert = require('assert')
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const { getGlobalDispatcher } = require('../global')
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/**
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* @see https://w3c.github.io/ServiceWorker/#dfn-cache-batch-operation
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* @typedef {Object} CacheBatchOperation
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* @property {'delete' | 'put'} type
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* @property {any} request
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* @property {any} response
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* @property {import('../../types/cache').CacheQueryOptions} options
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*/
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/**
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* @see https://w3c.github.io/ServiceWorker/#dfn-request-response-list
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* @typedef {[any, any][]} requestResponseList
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*/
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class Cache {
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/**
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* @see https://w3c.github.io/ServiceWorker/#dfn-relevant-request-response-list
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* @type {requestResponseList}
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*/
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#relevantRequestResponseList
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constructor () {
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if (arguments[0] !== kConstruct) {
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webidl.illegalConstructor()
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}
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this.#relevantRequestResponseList = arguments[1]
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}
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async match (request, options = {}) {
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webidl.brandCheck(this, Cache)
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webidl.argumentLengthCheck(arguments, 1, { header: 'Cache.match' })
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request = webidl.converters.RequestInfo(request)
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options = webidl.converters.CacheQueryOptions(options)
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const p = await this.matchAll(request, options)
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if (p.length === 0) {
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return
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}
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return p[0]
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}
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async matchAll (request = undefined, options = {}) {
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webidl.brandCheck(this, Cache)
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if (request !== undefined) request = webidl.converters.RequestInfo(request)
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options = webidl.converters.CacheQueryOptions(options)
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// 1.
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let r = null
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// 2.
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if (request !== undefined) {
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if (request instanceof Request) {
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// 2.1.1
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r = request[kState]
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// 2.1.2
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if (r.method !== 'GET' && !options.ignoreMethod) {
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return []
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}
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} else if (typeof request === 'string') {
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// 2.2.1
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r = new Request(request)[kState]
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}
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}
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// 5.
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// 5.1
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const responses = []
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// 5.2
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if (request === undefined) {
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// 5.2.1
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for (const requestResponse of this.#relevantRequestResponseList) {
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responses.push(requestResponse[1])
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}
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} else { // 5.3
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// 5.3.1
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const requestResponses = this.#queryCache(r, options)
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// 5.3.2
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for (const requestResponse of requestResponses) {
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responses.push(requestResponse[1])
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}
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}
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// 5.4
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// We don't implement CORs so we don't need to loop over the responses, yay!
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// 5.5.1
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const responseList = []
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// 5.5.2
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for (const response of responses) {
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// 5.5.2.1
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const responseObject = new Response(response.body?.source ?? null)
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const body = responseObject[kState].body
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responseObject[kState] = response
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responseObject[kState].body = body
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responseObject[kHeaders][kHeadersList] = response.headersList
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responseObject[kHeaders][kGuard] = 'immutable'
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responseList.push(responseObject)
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}
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// 6.
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return Object.freeze(responseList)
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}
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async add (request) {
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webidl.brandCheck(this, Cache)
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webidl.argumentLengthCheck(arguments, 1, { header: 'Cache.add' })
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request = webidl.converters.RequestInfo(request)
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// 1.
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const requests = [request]
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// 2.
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const responseArrayPromise = this.addAll(requests)
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// 3.
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return await responseArrayPromise
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}
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async addAll (requests) {
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webidl.brandCheck(this, Cache)
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webidl.argumentLengthCheck(arguments, 1, { header: 'Cache.addAll' })
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requests = webidl.converters['sequence<RequestInfo>'](requests)
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// 1.
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const responsePromises = []
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// 2.
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const requestList = []
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// 3.
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for (const request of requests) {
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if (typeof request === 'string') {
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continue
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}
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// 3.1
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const r = request[kState]
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// 3.2
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if (!urlIsHttpHttpsScheme(r.url) || r.method !== 'GET') {
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throw webidl.errors.exception({
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header: 'Cache.addAll',
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message: 'Expected http/s scheme when method is not GET.'
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})
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}
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}
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// 4.
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/** @type {ReturnType<typeof fetching>[]} */
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const fetchControllers = []
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// 5.
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for (const request of requests) {
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// 5.1
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const r = new Request(request)[kState]
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// 5.2
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if (!urlIsHttpHttpsScheme(r.url)) {
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throw webidl.errors.exception({
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header: 'Cache.addAll',
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message: 'Expected http/s scheme.'
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})
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}
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// 5.4
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r.initiator = 'fetch'
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r.destination = 'subresource'
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// 5.5
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requestList.push(r)
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// 5.6
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const responsePromise = createDeferredPromise()
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// 5.7
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fetchControllers.push(fetching({
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request: r,
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dispatcher: getGlobalDispatcher(),
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processResponse (response) {
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// 1.
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if (response.type === 'error' || response.status === 206 || response.status < 200 || response.status > 299) {
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responsePromise.reject(webidl.errors.exception({
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header: 'Cache.addAll',
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message: 'Received an invalid status code or the request failed.'
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}))
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} else if (response.headersList.contains('vary')) { // 2.
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// 2.1
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const fieldValues = getFieldValues(response.headersList.get('vary'))
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// 2.2
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for (const fieldValue of fieldValues) {
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// 2.2.1
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if (fieldValue === '*') {
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responsePromise.reject(webidl.errors.exception({
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header: 'Cache.addAll',
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message: 'invalid vary field value'
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}))
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for (const controller of fetchControllers) {
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controller.abort()
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}
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return
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}
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}
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}
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},
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processResponseEndOfBody (response) {
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// 1.
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if (response.aborted) {
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responsePromise.reject(new DOMException('aborted', 'AbortError'))
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return
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}
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// 2.
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responsePromise.resolve(response)
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}
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}))
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// 5.8
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responsePromises.push(responsePromise.promise)
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}
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// 6.
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const p = Promise.all(responsePromises)
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// 7.
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const responses = await p
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// 7.1
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const operations = []
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// 7.2
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let index = 0
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// 7.3
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for (const response of responses) {
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// 7.3.1
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/** @type {CacheBatchOperation} */
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const operation = {
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type: 'put', // 7.3.2
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request: requestList[index], // 7.3.3
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response // 7.3.4
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}
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operations.push(operation) // 7.3.5
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index++ // 7.3.6
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}
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// 7.5
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const cacheJobPromise = createDeferredPromise()
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// 7.6.1
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let errorData = null
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// 7.6.2
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try {
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this.#batchCacheOperations(operations)
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} catch (e) {
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errorData = e
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}
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// 7.6.3
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queueMicrotask(() => {
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// 7.6.3.1
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if (errorData === null) {
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cacheJobPromise.resolve(undefined)
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} else {
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// 7.6.3.2
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cacheJobPromise.reject(errorData)
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}
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})
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// 7.7
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return cacheJobPromise.promise
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}
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async put (request, response) {
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webidl.brandCheck(this, Cache)
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webidl.argumentLengthCheck(arguments, 2, { header: 'Cache.put' })
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request = webidl.converters.RequestInfo(request)
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response = webidl.converters.Response(response)
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// 1.
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let innerRequest = null
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// 2.
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if (request instanceof Request) {
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innerRequest = request[kState]
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} else { // 3.
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innerRequest = new Request(request)[kState]
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}
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// 4.
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if (!urlIsHttpHttpsScheme(innerRequest.url) || innerRequest.method !== 'GET') {
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throw webidl.errors.exception({
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header: 'Cache.put',
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message: 'Expected an http/s scheme when method is not GET'
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})
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}
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// 5.
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const innerResponse = response[kState]
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// 6.
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if (innerResponse.status === 206) {
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throw webidl.errors.exception({
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header: 'Cache.put',
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message: 'Got 206 status'
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})
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}
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// 7.
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if (innerResponse.headersList.contains('vary')) {
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// 7.1.
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const fieldValues = getFieldValues(innerResponse.headersList.get('vary'))
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// 7.2.
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for (const fieldValue of fieldValues) {
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// 7.2.1
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if (fieldValue === '*') {
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throw webidl.errors.exception({
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header: 'Cache.put',
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message: 'Got * vary field value'
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})
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}
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}
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}
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// 8.
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if (innerResponse.body && (isDisturbed(innerResponse.body.stream) || innerResponse.body.stream.locked)) {
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throw webidl.errors.exception({
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header: 'Cache.put',
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message: 'Response body is locked or disturbed'
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})
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}
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// 9.
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const clonedResponse = cloneResponse(innerResponse)
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// 10.
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const bodyReadPromise = createDeferredPromise()
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// 11.
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if (innerResponse.body != null) {
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// 11.1
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const stream = innerResponse.body.stream
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// 11.2
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const reader = stream.getReader()
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// 11.3
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readAllBytes(
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reader,
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(bytes) => bodyReadPromise.resolve(bytes),
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(error) => bodyReadPromise.reject(error)
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)
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} else {
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bodyReadPromise.resolve(undefined)
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}
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// 12.
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/** @type {CacheBatchOperation[]} */
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const operations = []
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// 13.
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/** @type {CacheBatchOperation} */
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const operation = {
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type: 'put', // 14.
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request: innerRequest, // 15.
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response: clonedResponse // 16.
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}
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// 17.
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operations.push(operation)
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// 19.
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const bytes = await bodyReadPromise.promise
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if (clonedResponse.body != null) {
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clonedResponse.body.source = bytes
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}
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// 19.1
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const cacheJobPromise = createDeferredPromise()
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// 19.2.1
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let errorData = null
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// 19.2.2
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try {
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this.#batchCacheOperations(operations)
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} catch (e) {
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errorData = e
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}
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// 19.2.3
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queueMicrotask(() => {
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// 19.2.3.1
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if (errorData === null) {
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cacheJobPromise.resolve()
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} else { // 19.2.3.2
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cacheJobPromise.reject(errorData)
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}
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})
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return cacheJobPromise.promise
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}
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async delete (request, options = {}) {
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webidl.brandCheck(this, Cache)
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webidl.argumentLengthCheck(arguments, 1, { header: 'Cache.delete' })
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request = webidl.converters.RequestInfo(request)
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options = webidl.converters.CacheQueryOptions(options)
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/**
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* @type {Request}
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*/
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let r = null
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if (request instanceof Request) {
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r = request[kState]
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if (r.method !== 'GET' && !options.ignoreMethod) {
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return false
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}
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} else {
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assert(typeof request === 'string')
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r = new Request(request)[kState]
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}
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/** @type {CacheBatchOperation[]} */
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const operations = []
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/** @type {CacheBatchOperation} */
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const operation = {
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type: 'delete',
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request: r,
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options
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}
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operations.push(operation)
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const cacheJobPromise = createDeferredPromise()
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let errorData = null
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let requestResponses
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try {
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requestResponses = this.#batchCacheOperations(operations)
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} catch (e) {
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errorData = e
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}
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queueMicrotask(() => {
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if (errorData === null) {
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cacheJobPromise.resolve(!!requestResponses?.length)
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} else {
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cacheJobPromise.reject(errorData)
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}
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})
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return cacheJobPromise.promise
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}
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/**
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* @see https://w3c.github.io/ServiceWorker/#dom-cache-keys
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* @param {any} request
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* @param {import('../../types/cache').CacheQueryOptions} options
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* @returns {readonly Request[]}
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*/
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async keys (request = undefined, options = {}) {
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webidl.brandCheck(this, Cache)
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if (request !== undefined) request = webidl.converters.RequestInfo(request)
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options = webidl.converters.CacheQueryOptions(options)
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// 1.
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let r = null
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// 2.
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if (request !== undefined) {
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// 2.1
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if (request instanceof Request) {
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// 2.1.1
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r = request[kState]
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// 2.1.2
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if (r.method !== 'GET' && !options.ignoreMethod) {
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return []
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}
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} else if (typeof request === 'string') { // 2.2
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r = new Request(request)[kState]
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}
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}
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// 4.
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const promise = createDeferredPromise()
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// 5.
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// 5.1
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const requests = []
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// 5.2
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if (request === undefined) {
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// 5.2.1
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for (const requestResponse of this.#relevantRequestResponseList) {
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// 5.2.1.1
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requests.push(requestResponse[0])
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}
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} else { // 5.3
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// 5.3.1
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const requestResponses = this.#queryCache(r, options)
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// 5.3.2
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for (const requestResponse of requestResponses) {
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// 5.3.2.1
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requests.push(requestResponse[0])
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}
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}
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// 5.4
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queueMicrotask(() => {
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// 5.4.1
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const requestList = []
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// 5.4.2
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for (const request of requests) {
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const requestObject = new Request('https://a')
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requestObject[kState] = request
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requestObject[kHeaders][kHeadersList] = request.headersList
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requestObject[kHeaders][kGuard] = 'immutable'
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requestObject[kRealm] = request.client
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// 5.4.2.1
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requestList.push(requestObject)
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}
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// 5.4.3
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promise.resolve(Object.freeze(requestList))
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})
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return promise.promise
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}
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/**
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* @see https://w3c.github.io/ServiceWorker/#batch-cache-operations-algorithm
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* @param {CacheBatchOperation[]} operations
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* @returns {requestResponseList}
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*/
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#batchCacheOperations (operations) {
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// 1.
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const cache = this.#relevantRequestResponseList
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// 2.
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const backupCache = [...cache]
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// 3.
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const addedItems = []
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// 4.1
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const resultList = []
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try {
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// 4.2
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for (const operation of operations) {
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// 4.2.1
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if (operation.type !== 'delete' && operation.type !== 'put') {
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throw webidl.errors.exception({
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header: 'Cache.#batchCacheOperations',
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message: 'operation type does not match "delete" or "put"'
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})
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}
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// 4.2.2
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if (operation.type === 'delete' && operation.response != null) {
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throw webidl.errors.exception({
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header: 'Cache.#batchCacheOperations',
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message: 'delete operation should not have an associated response'
|
|
})
|
|
}
|
|
|
|
// 4.2.3
|
|
if (this.#queryCache(operation.request, operation.options, addedItems).length) {
|
|
throw new DOMException('???', 'InvalidStateError')
|
|
}
|
|
|
|
// 4.2.4
|
|
let requestResponses
|
|
|
|
// 4.2.5
|
|
if (operation.type === 'delete') {
|
|
// 4.2.5.1
|
|
requestResponses = this.#queryCache(operation.request, operation.options)
|
|
|
|
// TODO: the spec is wrong, this is needed to pass WPTs
|
|
if (requestResponses.length === 0) {
|
|
return []
|
|
}
|
|
|
|
// 4.2.5.2
|
|
for (const requestResponse of requestResponses) {
|
|
const idx = cache.indexOf(requestResponse)
|
|
assert(idx !== -1)
|
|
|
|
// 4.2.5.2.1
|
|
cache.splice(idx, 1)
|
|
}
|
|
} else if (operation.type === 'put') { // 4.2.6
|
|
// 4.2.6.1
|
|
if (operation.response == null) {
|
|
throw webidl.errors.exception({
|
|
header: 'Cache.#batchCacheOperations',
|
|
message: 'put operation should have an associated response'
|
|
})
|
|
}
|
|
|
|
// 4.2.6.2
|
|
const r = operation.request
|
|
|
|
// 4.2.6.3
|
|
if (!urlIsHttpHttpsScheme(r.url)) {
|
|
throw webidl.errors.exception({
|
|
header: 'Cache.#batchCacheOperations',
|
|
message: 'expected http or https scheme'
|
|
})
|
|
}
|
|
|
|
// 4.2.6.4
|
|
if (r.method !== 'GET') {
|
|
throw webidl.errors.exception({
|
|
header: 'Cache.#batchCacheOperations',
|
|
message: 'not get method'
|
|
})
|
|
}
|
|
|
|
// 4.2.6.5
|
|
if (operation.options != null) {
|
|
throw webidl.errors.exception({
|
|
header: 'Cache.#batchCacheOperations',
|
|
message: 'options must not be defined'
|
|
})
|
|
}
|
|
|
|
// 4.2.6.6
|
|
requestResponses = this.#queryCache(operation.request)
|
|
|
|
// 4.2.6.7
|
|
for (const requestResponse of requestResponses) {
|
|
const idx = cache.indexOf(requestResponse)
|
|
assert(idx !== -1)
|
|
|
|
// 4.2.6.7.1
|
|
cache.splice(idx, 1)
|
|
}
|
|
|
|
// 4.2.6.8
|
|
cache.push([operation.request, operation.response])
|
|
|
|
// 4.2.6.10
|
|
addedItems.push([operation.request, operation.response])
|
|
}
|
|
|
|
// 4.2.7
|
|
resultList.push([operation.request, operation.response])
|
|
}
|
|
|
|
// 4.3
|
|
return resultList
|
|
} catch (e) { // 5.
|
|
// 5.1
|
|
this.#relevantRequestResponseList.length = 0
|
|
|
|
// 5.2
|
|
this.#relevantRequestResponseList = backupCache
|
|
|
|
// 5.3
|
|
throw e
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @see https://w3c.github.io/ServiceWorker/#query-cache
|
|
* @param {any} requestQuery
|
|
* @param {import('../../types/cache').CacheQueryOptions} options
|
|
* @param {requestResponseList} targetStorage
|
|
* @returns {requestResponseList}
|
|
*/
|
|
#queryCache (requestQuery, options, targetStorage) {
|
|
/** @type {requestResponseList} */
|
|
const resultList = []
|
|
|
|
const storage = targetStorage ?? this.#relevantRequestResponseList
|
|
|
|
for (const requestResponse of storage) {
|
|
const [cachedRequest, cachedResponse] = requestResponse
|
|
if (this.#requestMatchesCachedItem(requestQuery, cachedRequest, cachedResponse, options)) {
|
|
resultList.push(requestResponse)
|
|
}
|
|
}
|
|
|
|
return resultList
|
|
}
|
|
|
|
/**
|
|
* @see https://w3c.github.io/ServiceWorker/#request-matches-cached-item-algorithm
|
|
* @param {any} requestQuery
|
|
* @param {any} request
|
|
* @param {any | null} response
|
|
* @param {import('../../types/cache').CacheQueryOptions | undefined} options
|
|
* @returns {boolean}
|
|
*/
|
|
#requestMatchesCachedItem (requestQuery, request, response = null, options) {
|
|
// if (options?.ignoreMethod === false && request.method === 'GET') {
|
|
// return false
|
|
// }
|
|
|
|
const queryURL = new URL(requestQuery.url)
|
|
|
|
const cachedURL = new URL(request.url)
|
|
|
|
if (options?.ignoreSearch) {
|
|
cachedURL.search = ''
|
|
|
|
queryURL.search = ''
|
|
}
|
|
|
|
if (!urlEquals(queryURL, cachedURL, true)) {
|
|
return false
|
|
}
|
|
|
|
if (
|
|
response == null ||
|
|
options?.ignoreVary ||
|
|
!response.headersList.contains('vary')
|
|
) {
|
|
return true
|
|
}
|
|
|
|
const fieldValues = getFieldValues(response.headersList.get('vary'))
|
|
|
|
for (const fieldValue of fieldValues) {
|
|
if (fieldValue === '*') {
|
|
return false
|
|
}
|
|
|
|
const requestValue = request.headersList.get(fieldValue)
|
|
const queryValue = requestQuery.headersList.get(fieldValue)
|
|
|
|
// If one has the header and the other doesn't, or one has
|
|
// a different value than the other, return false
|
|
if (requestValue !== queryValue) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
}
|
|
|
|
Object.defineProperties(Cache.prototype, {
|
|
[Symbol.toStringTag]: {
|
|
value: 'Cache',
|
|
configurable: true
|
|
},
|
|
match: kEnumerableProperty,
|
|
matchAll: kEnumerableProperty,
|
|
add: kEnumerableProperty,
|
|
addAll: kEnumerableProperty,
|
|
put: kEnumerableProperty,
|
|
delete: kEnumerableProperty,
|
|
keys: kEnumerableProperty
|
|
})
|
|
|
|
const cacheQueryOptionConverters = [
|
|
{
|
|
key: 'ignoreSearch',
|
|
converter: webidl.converters.boolean,
|
|
defaultValue: false
|
|
},
|
|
{
|
|
key: 'ignoreMethod',
|
|
converter: webidl.converters.boolean,
|
|
defaultValue: false
|
|
},
|
|
{
|
|
key: 'ignoreVary',
|
|
converter: webidl.converters.boolean,
|
|
defaultValue: false
|
|
}
|
|
]
|
|
|
|
webidl.converters.CacheQueryOptions = webidl.dictionaryConverter(cacheQueryOptionConverters)
|
|
|
|
webidl.converters.MultiCacheQueryOptions = webidl.dictionaryConverter([
|
|
...cacheQueryOptionConverters,
|
|
{
|
|
key: 'cacheName',
|
|
converter: webidl.converters.DOMString
|
|
}
|
|
])
|
|
|
|
webidl.converters.Response = webidl.interfaceConverter(Response)
|
|
|
|
webidl.converters['sequence<RequestInfo>'] = webidl.sequenceConverter(
|
|
webidl.converters.RequestInfo
|
|
)
|
|
|
|
module.exports = {
|
|
Cache
|
|
}
|