MSW diff between v0.36.8 and v1.3.5
261 lines
/* eslint-disable */
/* tslint:disable */
/* tslint:disable */
/**
/**
* Mock Service Worker (0.36.8).
* Mock Service Worker (1.3.5).
* @see https://github.com/mswjs/msw
* @see https://github.com/mswjs/msw
* - Please do NOT modify this file.
* - Please do NOT modify this file.
* - Please do NOT serve this file on production.
* - Please do NOT serve this file on production.
*/
*/
const INTEGRITY_CHECKSUM = '02f4ad4a2797f85668baf196e553d929'
const INTEGRITY_CHECKSUM = '3d6b9f06410d179a7f7404d4bf4c3c70'
const bypassHeaderName = 'x-msw-bypass'
const activeClientIds = new Set()
const activeClientIds = new Set()
self.addEventListener('install', function () {
self.addEventListener('install', function () {
return self.skipWaiting()
self.skipWaiting()
})
})
self.addEventListener('activate', async function (event) {
self.addEventListener('activate', function (event) {
return self.clients.claim()
event.waitUntil(self.clients.claim())
})
})
self.addEventListener('message', async function (event) {
self.addEventListener('message', async function (event) {
@@ -33,7 +32,9 @@ self.addEventListener('message', async function (event) {
const clientId = event.source.id
if (!clientId || !self.clients) {
return
return
}
}
const allClients = await self.clients.matchAll()
const client = await self.clients.get(clientId)
if (!client) {
return
}
const allClients = await self.clients.matchAll({
type: 'window',
})
switch (event.data) {
switch (event.data) {
case 'KEEPALIVE_REQUEST': {
case 'KEEPALIVE_REQUEST': {
@@ -83,30 +84,58 @@ self.addEventListener('message', async function (event) {
sendToClient(client, {
}
type: 'KEEPALIVE_RESPONSE',
Text moved to lines 168-181
})
// 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.
async function resolveMainClient(event) {
const client = await self.clients.get(event.clientId)
if (client.frameType === 'top-level') {
return client
}
const allClients = await self.clients.matchAll()
Text moved with changes to lines 184-199 (94.6% similarity)
return allClients
.filter((client) => {
// Get only those clients that are currently visible.
return client.visibilityState === 'visible'
})
.find((client) => {
// Find the client ID that's recorded in the
// set of clients that have registered the worker.
return activeClientIds.has(client.id)
})
}
async function handleRequest(event, requestId) {
const client = await resolveMainClient(event)
@@ -128,7 +157,7 @@ async function handleRequest(event, requestId) {
Text moved with changes to lines 157-162 (97.2% similarity)
statusText: clonedResponse.statusText,
body:
clonedResponse.body === null ? null : await clonedResponse.text(),
headers: serializeHeaders(clonedResponse.headers),
redirected: clonedResponse.redirected,
},
})
})
@@ -138,49 +167,78 @@ async function handleRequest(event, requestId) {
break
return response
}
async function getResponse(event, client, requestId) {
const { request } = event
const requestClone = request.clone()
const getOriginalResponse = () => fetch(requestClone)
Text moved to lines 214-230
// Bypass mocking when the request client is not active.
if (!client) {
return getOriginalResponse()
}
// Bypass initial page load requests (i.e. static assets).
// The absence of the immediate/parent client in the map of the active clients
// means that MSW hasn't dispatched the "MOCK_ACTIVATE" event yet
// and is not ready to handle requests.
if (!activeClientIds.has(client.id)) {
return await getOriginalResponse()
}
// Bypass requests with the explicit bypass header
if (requestClone.headers.get(bypassHeaderName) === 'true') {
const cleanRequestHeaders = serializeHeaders(requestClone.headers)
// Remove the bypass header to comply with the CORS preflight check.
delete cleanRequestHeaders[bypassHeaderName]
const originalRequest = new Request(requestClone, {
headers: new Headers(cleanRequestHeaders),
})
return fetch(originalRequest)
}
// Send the request to the client-side MSW.
const reqHeaders = serializeHeaders(request.headers)
const body = await request.text()
Text moved to lines 235-240
const clientMessage = await sendToClient(client, {
type: 'REQUEST',
payload: {
id: requestId,
url: request.url,
method: request.method,
headers: reqHeaders,
Text moved to lines 242-244
cache: request.cache,
mode: request.mode,
credentials: request.credentials,
@@ -189,115 +247,32 @@ async function getResponse(event, client, requestId) {
Text moved to lines 247-249
redirect: request.redirect,
referrer: request.referrer,
referrerPolicy: request.referrerPolicy,
body,
Text moved with changes to lines 251-258 (93.9% similarity)
bodyUsed: request.bodyUsed,
keepalive: request.keepalive,
},
})
switch (clientMessage.type) {
case 'MOCK_SUCCESS': {
return delayPromise(
() => respondWithMock(clientMessage),
clientMessage.payload.delay,
)
}
}
case 'MOCK_NOT_FOUND': {
case 'INTEGRITY_CHECK_REQUEST': {
return getOriginalResponse()
sendToClient(client, {
type: 'INTEGRITY_CHECK_RESPONSE',
payload: INTEGRITY_CHECKSUM,
})
break
}
}
case 'NETWORK_ERROR': {
case 'MOCK_ACTIVATE': {
const { name, message } = clientMessage.payload
activeClientIds.add(clientId)
const networkError = new Error(message)
networkError.name = name
// Rejecting a request Promise emulates a network error.
sendToClient(client, {
throw networkError
type: 'MOCKING_ENABLED',
payload: true,
})
break
}
}
case 'INTERNAL_ERROR': {
case 'MOCK_DEACTIVATE': {
const parsedBody = JSON.parse(clientMessage.payload.body)
activeClientIds.delete(clientId)
break
}
console.error(
case 'CLIENT_CLOSED': {
`\
activeClientIds.delete(clientId)
[MSW] Uncaught exception in the request handler for "%s %s":
${parsedBody.location}
This exception has been gracefully handled as a 500 response, however, it's strongly recommended to resolve this error, as it indicates a mistake in your code. If you wish to mock an error response, please see this guide: https://mswjs.io/docs/recipes/mocking-error-responses\
`,
request.method,
request.url,
)
return respondWithMock(clientMessage)
const remainingClients = allClients.filter((client) => {
return client.id !== clientId
})
// Unregister itself when there are no more clients
if (remainingClients.length === 0) {
self.registration.unregister()
}
break
}
}
}
}
})
return getOriginalResponse()
}
self.addEventListener('fetch', function (event) {
self.addEventListener('fetch', function (event) {
const { request } = event
const { request } = event
const accept = request.headers.get('accept') || ''
const accept = request.headers.get('accept') || ''
// Bypass server-sent events.
// Bypass server-sent events.
if (accept.includes('text/event-stream')) {
if (accept.includes('text/event-stream')) {
return
return
}
}
// Bypass navigation requests.
// Bypass navigation requests.
if (request.mode === 'navigate') {
if (request.mode === 'navigate') {
return
return
}
}
// Opening the DevTools triggers the "only-if-cached" request
// Opening the DevTools triggers the "only-if-cached" request
// that cannot be handled by the worker. Bypass such requests.
// that cannot be handled by the worker. Bypass such requests.
if (request.cache === 'only-if-cached' && request.mode !== 'same-origin') {
if (request.cache === 'only-if-cached' && request.mode !== 'same-origin') {
return
return
}
}
// Bypass all requests when there are no active clients.
// Bypass all requests when there are no active clients.
// Prevents the self-unregistered worked from handling requests
// Prevents the self-unregistered worked from handling requests
// after it's been deleted (still remains active until the next reload).
// after it's been deleted (still remains active until the next reload).
if (activeClientIds.size === 0) {
if (activeClientIds.size === 0) {
return
return
}
}
const requestId = uuidv4()
// Generate unique request ID.
const requestId = Math.random().toString(16).slice(2)
return event.respondWith(
event.respondWith(
handleRequest(event, requestId).catch((error) => {
handleRequest(event, requestId).catch((error) => {
if (error.name === 'NetworkError') {
if (error.name === 'NetworkError') {
console.warn(
console.warn(
'[MSW] Successfully emulated a network error for the "%s %s" request.',
'[MSW] Successfully emulated a network error for the "%s %s" request.',
request.method,
request.method,
request.url,
request.url,
)
)
return
return
}
}
// At this point, any exception indicates an issue with the original request/response.
// At this point, any exception indicates an issue with the original request/response.
console.error(
console.error(
`\
`\
[MSW] Caught an exception from the "%s %s" request (%s). This is probably not a problem with Mock Service Worker. There is likely an additional logging output above.`,
[MSW] Caught an exception from the "%s %s" request (%s). This is probably not a problem with Mock Service Worker. There is likely an additional logging output above.`,
request.method,
request.method,
request.url,
request.url,
`${error.name}: ${error.message}`,
`${error.name}: ${error.message}`,
)
)
}),
}),
)
)
})
})
function serializeHeaders(headers) {
async function handleRequest(event, requestId) {
const reqHeaders = {}
const client = await resolveMainClient(event)
headers.forEach((value, name) => {
const response = await getResponse(event, client, requestId)
reqHeaders[name] = reqHeaders[name]
? [].concat(reqHeaders[name]).concat(value)
// Send back the response clone for the "response:*" life-cycle events.
: value
// 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 clonedResponse = response.clone()
sendToClient(client, {
type: 'RESPONSE',
payload: {
requestId,
type: clonedResponse.type,
ok: clonedResponse.ok,
status: clonedResponse.status,
Text moved with changes from lines 63-68 (97.2% similarity)
statusText: clonedResponse.statusText,
body:
clonedResponse.body === null ? null : await clonedResponse.text(),
headers: Object.fromEntries(clonedResponse.headers.entries()),
redirected: clonedResponse.redirected,
},
})
})()
}
return response
Text moved from lines 33-46
}
// 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.
async function resolveMainClient(event) {
const client = await self.clients.get(event.clientId)
if (client?.frameType === 'top-level') {
return client
}
const allClients = await self.clients.matchAll({
type: 'window',
})
})
Text moved with changes from lines 47-62 (94.6% similarity)
return reqHeaders
return allClients
.filter((client) => {
// Get only those clients that are currently visible.
return client.visibilityState === 'visible'
})
.find((client) => {
// Find the client ID that's recorded in the
// set of clients that have registered the worker.
return activeClientIds.has(client.id)
})
}
async function getResponse(event, client, requestId) {
const { request } = event
const clonedRequest = request.clone()
function passthrough() {
// Clone the request because it might've been already used
// (i.e. its body has been read and sent to the client).
const headers = Object.fromEntries(clonedRequest.headers.entries())
// Remove MSW-specific request headers so the bypassed requests
// comply with the server's CORS preflight check.
// Operate with the headers as an object because request "Headers"
// are immutable.
delete headers['x-msw-bypass']
return fetch(clonedRequest, { headers })
}
Text moved from lines 78-94
// Bypass mocking when the client is not active.
if (!client) {
return passthrough()
}
// Bypass initial page load requests (i.e. static assets).
// The absence of the immediate/parent client in the map of the active clients
// means that MSW hasn't dispatched the "MOCK_ACTIVATE" event yet
// and is not ready to handle requests.
if (!activeClientIds.has(client.id)) {
return passthrough()
}
// Bypass requests with the explicit bypass header.
// Such requests can be issued by "ctx.fetch()".
if (request.headers.get('x-msw-bypass') === 'true') {
return passthrough()
}
// Notify the client that a request has been intercepted.
Text moved from lines 110-115
const clientMessage = await sendToClient(client, {
type: 'REQUEST',
payload: {
id: requestId,
url: request.url,
method: request.method,
headers: Object.fromEntries(request.headers.entries()),
Text moved from lines 117-119
cache: request.cache,
mode: request.mode,
credentials: request.credentials,
destination: request.destination,
integrity: request.integrity,
Text moved from lines 121-123
redirect: request.redirect,
referrer: request.referrer,
referrerPolicy: request.referrerPolicy,
body: await request.text(),
Text moved with changes from lines 125-132 (93.9% similarity)
bodyUsed: request.bodyUsed,
keepalive: request.keepalive,
},
})
switch (clientMessage.type) {
case 'MOCK_RESPONSE': {
return respondWithMock(clientMessage.data)
}
case 'MOCK_NOT_FOUND': {
return passthrough()
}
case 'NETWORK_ERROR': {
const { name, message } = clientMessage.data
const networkError = new Error(message)
networkError.name = name
// Rejecting a "respondWith" promise emulates a network error.
throw networkError
}
}
return passthrough()
}
}
function sendToClient(client, message) {
function sendToClient(client, message) {
@@ -312,27 +287,17 @@ function sendToClient(client, message) {
return new Promise((resolve, reject) => {
const channel = new MessageChannel()
channel.port1.onmessage = (event) => {
if (event.data && event.data.error) {
return reject(event.data.error)
}
resolve(event.data)
resolve(event.data)
}
}
client.postMessage(JSON.stringify(message), [channel.port2])
client.postMessage(message, [channel.port2])
})
})
}
}
function delayPromise(cb, duration) {
function sleep(timeMs) {
return new Promise((resolve) => {
return new Promise((resolve) => {
setTimeout(() => resolve(cb()), duration)
setTimeout(resolve, timeMs)
})
}
function respondWithMock(clientMessage) {
return new Response(clientMessage.payload.body, {
...clientMessage.payload,
headers: clientMessage.payload.headers,
})
})
}
}
function uuidv4() {
async function respondWithMock(response) {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
await sleep(response.delay)
const r = (Math.random() * 16) | 0
return new Response(response.body, response)
const v = c == 'x' ? r : (r & 0x3) | 0x8
return v.toString(16)
})
}
}