This commit is contained in:
Nathan Bierema 2025-06-17 19:25:17 -04:00
parent 4889607f18
commit e4d2ecb145

View File

@ -5,24 +5,23 @@
* Mock Service Worker.
* @see https://github.com/mswjs/msw
* - Please do NOT modify this file.
* - Please do NOT serve this file on production.
*/
const PACKAGE_VERSION = '2.8.7'
const INTEGRITY_CHECKSUM = '00729d72e3b82faf54ca8b9621dbb96f'
const PACKAGE_VERSION = '2.10.2'
const INTEGRITY_CHECKSUM = 'f5825c521429caf22a4dd13b66e243af'
const IS_MOCKED_RESPONSE = Symbol('isMockedResponse')
const activeClientIds = new Set()
self.addEventListener('install', function () {
addEventListener('install', function () {
self.skipWaiting()
})
self.addEventListener('activate', function (event) {
addEventListener('activate', function (event) {
event.waitUntil(self.clients.claim())
})
self.addEventListener('message', async function (event) {
const clientId = event.source.id
addEventListener('message', async function (event) {
const clientId = Reflect.get(event.source || {}, 'id')
if (!clientId || !self.clients) {
return
@ -94,17 +93,18 @@ self.addEventListener('message', async function (event) {
}
})
self.addEventListener('fetch', function (event) {
const { request } = event
addEventListener('fetch', function (event) {
// Bypass navigation requests.
if (request.mode === 'navigate') {
if (event.request.mode === 'navigate') {
return
}
// Opening the DevTools triggers the "only-if-cached" request
// that cannot be handled by the worker. Bypass such requests.
if (request.cache === 'only-if-cached' && request.mode !== 'same-origin') {
if (
event.request.cache === 'only-if-cached' &&
event.request.mode !== 'same-origin'
) {
return
}
@ -115,48 +115,62 @@ self.addEventListener('fetch', function (event) {
return
}
// Generate unique request ID.
const requestId = crypto.randomUUID()
event.respondWith(handleRequest(event, requestId))
})
/**
* @param {FetchEvent} event
* @param {string} requestId
*/
async function handleRequest(event, requestId) {
const client = await resolveMainClient(event)
const requestCloneForEvents = event.request.clone()
const response = await getResponse(event, client, requestId)
// Send back the response clone for the "response:*" life-cycle events.
// Ensure MSW is active and ready to handle the message, otherwise
// this message will pend indefinitely.
if (client && activeClientIds.has(client.id)) {
;(async function () {
const responseClone = response.clone()
const serializedRequest = await serializeRequest(requestCloneForEvents)
sendToClient(
client,
{
type: 'RESPONSE',
payload: {
requestId,
isMockedResponse: IS_MOCKED_RESPONSE in response,
// Clone the response so both the client and the library could consume it.
const responseClone = response.clone()
sendToClient(
client,
{
type: 'RESPONSE',
payload: {
isMockedResponse: IS_MOCKED_RESPONSE in response,
request: {
id: requestId,
...serializedRequest,
},
response: {
type: responseClone.type,
status: responseClone.status,
statusText: responseClone.statusText,
body: responseClone.body,
headers: Object.fromEntries(responseClone.headers.entries()),
body: responseClone.body,
},
},
[responseClone.body],
)
})()
},
responseClone.body ? [serializedRequest.body, responseClone.body] : [],
)
}
return response
}
// Resolve the main client for the given event.
// Client that issues a request doesn't necessarily equal the client
// that registered the worker. It's with the latter the worker should
// communicate with during the response resolving phase.
/**
* Resolve the main client for the given event.
* Client that issues a request doesn't necessarily equal the client
* that registered the worker. It's with the latter the worker should
* communicate with during the response resolving phase.
* @param {FetchEvent} event
* @returns {Promise<Client | undefined>}
*/
async function resolveMainClient(event) {
const client = await self.clients.get(event.clientId)
@ -184,12 +198,16 @@ async function resolveMainClient(event) {
})
}
/**
* @param {FetchEvent} event
* @param {Client | undefined} client
* @param {string} requestId
* @returns {Promise<Response>}
*/
async function getResponse(event, client, requestId) {
const { request } = event
// Clone the request because it might've been already used
// (i.e. its body has been read and sent to the client).
const requestClone = request.clone()
const requestClone = event.request.clone()
function passthrough() {
// Cast the request headers to a new Headers instance
@ -230,29 +248,17 @@ async function getResponse(event, client, requestId) {
}
// Notify the client that a request has been intercepted.
const requestBuffer = await request.arrayBuffer()
const serializedRequest = await serializeRequest(event.request)
const clientMessage = await sendToClient(
client,
{
type: 'REQUEST',
payload: {
id: requestId,
url: request.url,
mode: request.mode,
method: request.method,
headers: Object.fromEntries(request.headers.entries()),
cache: request.cache,
credentials: request.credentials,
destination: request.destination,
integrity: request.integrity,
redirect: request.redirect,
referrer: request.referrer,
referrerPolicy: request.referrerPolicy,
body: requestBuffer,
keepalive: request.keepalive,
...serializedRequest,
},
},
[requestBuffer],
[serializedRequest.body],
)
switch (clientMessage.type) {
@ -268,6 +274,12 @@ async function getResponse(event, client, requestId) {
return passthrough()
}
/**
* @param {Client} client
* @param {any} message
* @param {Array<Transferable>} transferrables
* @returns {Promise<any>}
*/
function sendToClient(client, message, transferrables = []) {
return new Promise((resolve, reject) => {
const channel = new MessageChannel()
@ -280,14 +292,18 @@ function sendToClient(client, message, transferrables = []) {
resolve(event.data)
}
client.postMessage(
message,
[channel.port2].concat(transferrables.filter(Boolean)),
)
client.postMessage(message, [
channel.port2,
...transferrables.filter(Boolean),
])
})
}
async function respondWithMock(response) {
/**
* @param {Response} response
* @returns {Response}
*/
function respondWithMock(response) {
// Setting response status code to 0 is a no-op.
// However, when responding with a "Response.error()", the produced Response
// instance will have status code set to 0. Since it's not possible to create
@ -305,3 +321,24 @@ async function respondWithMock(response) {
return mockedResponse
}
/**
* @param {Request} request
*/
async function serializeRequest(request) {
return {
url: request.url,
mode: request.mode,
method: request.method,
headers: Object.fromEntries(request.headers.entries()),
cache: request.cache,
credentials: request.credentials,
destination: request.destination,
integrity: request.integrity,
redirect: request.redirect,
referrer: request.referrer,
referrerPolicy: request.referrerPolicy,
body: await request.arrayBuffer(),
keepalive: request.keepalive,
}
}