refactor: change message interface

www/public/mockServiceWorker.js

@@ -8,128 +8,128 @@
  * - Please do NOT serve this file on production.
  */
 
-const PACKAGE_VERSION = "2.3.5";
-const INTEGRITY_CHECKSUM = "26357c79639bfa20d64c0efca2a87423";
-const IS_MOCKED_RESPONSE = Symbol("isMockedResponse");
-const activeClientIds = new Set();
+const PACKAGE_VERSION = '2.4.1'
+const INTEGRITY_CHECKSUM = '26357c79639bfa20d64c0efca2a87423'
+const IS_MOCKED_RESPONSE = Symbol('isMockedResponse')
+const activeClientIds = new Set()
 
-self.addEventListener("install", () => {
-  self.skipWaiting();
-});
+self.addEventListener('install', function () {
+  self.skipWaiting()
+})
 
-self.addEventListener("activate", (event) => {
-  event.waitUntil(self.clients.claim());
-});
+self.addEventListener('activate', function (event) {
+  event.waitUntil(self.clients.claim())
+})
 
-self.addEventListener("message", async (event) => {
-  const clientId = event.source.id;
+self.addEventListener('message', async function (event) {
+  const clientId = event.source.id
 
   if (!clientId || !self.clients) {
-    return;
+    return
   }
 
-  const client = await self.clients.get(clientId);
+  const client = await self.clients.get(clientId)
 
   if (!client) {
-    return;
+    return
   }
 
   const allClients = await self.clients.matchAll({
-    type: "window",
-  });
+    type: 'window',
+  })
 
   switch (event.data) {
-    case "KEEPALIVE_REQUEST": {
+    case 'KEEPALIVE_REQUEST': {
       sendToClient(client, {
-        type: "KEEPALIVE_RESPONSE",
-      });
-      break;
+        type: 'KEEPALIVE_RESPONSE',
+      })
+      break
     }
 
-    case "INTEGRITY_CHECK_REQUEST": {
+    case 'INTEGRITY_CHECK_REQUEST': {
       sendToClient(client, {
-        type: "INTEGRITY_CHECK_RESPONSE",
+        type: 'INTEGRITY_CHECK_RESPONSE',
         payload: {
           packageVersion: PACKAGE_VERSION,
           checksum: INTEGRITY_CHECKSUM,
         },
-      });
-      break;
+      })
+      break
     }
 
-    case "MOCK_ACTIVATE": {
-      activeClientIds.add(clientId);
+    case 'MOCK_ACTIVATE': {
+      activeClientIds.add(clientId)
 
       sendToClient(client, {
-        type: "MOCKING_ENABLED",
+        type: 'MOCKING_ENABLED',
         payload: true,
-      });
-      break;
+      })
+      break
     }
 
-    case "MOCK_DEACTIVATE": {
-      activeClientIds.delete(clientId);
-      break;
+    case 'MOCK_DEACTIVATE': {
+      activeClientIds.delete(clientId)
+      break
     }
 
-    case "CLIENT_CLOSED": {
-      activeClientIds.delete(clientId);
+    case 'CLIENT_CLOSED': {
+      activeClientIds.delete(clientId)
 
       const remainingClients = allClients.filter((client) => {
-        return client.id !== clientId;
-      });
+        return client.id !== clientId
+      })
 
       // Unregister itself when there are no more clients
       if (remainingClients.length === 0) {
-        self.registration.unregister();
+        self.registration.unregister()
       }
 
-      break;
+      break
     }
   }
-});
+})
 
-self.addEventListener("fetch", (event) => {
-  const { request } = event;
+self.addEventListener('fetch', function (event) {
+  const { request } = event
 
   // Bypass navigation requests.
-  if (request.mode === "navigate") {
-    return;
+  if (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") {
-    return;
+  if (request.cache === 'only-if-cached' && request.mode !== 'same-origin') {
+    return
   }
 
   // Bypass all requests when there are no active clients.
   // Prevents the self-unregistered worked from handling requests
   // after it's been deleted (still remains active until the next reload).
   if (activeClientIds.size === 0) {
-    return;
+    return
   }
 
   // Generate unique request ID.
-  const requestId = crypto.randomUUID();
-  event.respondWith(handleRequest(event, requestId));
-});
+  const requestId = crypto.randomUUID()
+  event.respondWith(handleRequest(event, requestId))
+})
 
 async function handleRequest(event, requestId) {
-  const client = await resolveMainClient(event);
-  const response = await getResponse(event, client, requestId);
+  const client = await resolveMainClient(event)
+  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 () => {
-      const responseClone = response.clone();
+    ;(async function () {
+      const responseClone = response.clone()
 
       sendToClient(
         client,
         {
-          type: "RESPONSE",
+          type: 'RESPONSE',
           payload: {
             requestId,
             isMockedResponse: IS_MOCKED_RESPONSE in response,
@@ -141,77 +141,77 @@ async function handleRequest(event, requestId) {
           },
         },
         [responseClone.body],
-      );
-    })();
+      )
+    })()
   }
 
-  return response;
+  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.
 async function resolveMainClient(event) {
-  const client = await self.clients.get(event.clientId);
+  const client = await self.clients.get(event.clientId)
 
-  if (client?.frameType === "top-level") {
-    return client;
+  if (client?.frameType === 'top-level') {
+    return client
   }
 
   const allClients = await self.clients.matchAll({
-    type: "window",
-  });
+    type: 'window',
+  })
 
   return allClients
     .filter((client) => {
       // Get only those clients that are currently visible.
-      return client.visibilityState === "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);
-    });
+      return activeClientIds.has(client.id)
+    })
 }
 
 async function getResponse(event, client, requestId) {
-  const { request } = event;
+  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 = request.clone()
 
   function passthrough() {
-    const headers = Object.fromEntries(requestClone.headers.entries());
+    const headers = Object.fromEntries(requestClone.headers.entries())
 
     // Remove internal MSW request header so the passthrough request
     // complies with any potential CORS preflight checks on the server.
     // Some servers forbid unknown request headers.
-    headers["x-msw-intention"] = undefined;
+    delete headers['x-msw-intention']
 
-    return fetch(requestClone, { headers });
+    return fetch(requestClone, { headers })
   }
 
   // Bypass mocking when the client is not active.
   if (!client) {
-    return passthrough();
+    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();
+    return passthrough()
   }
 
   // Notify the client that a request has been intercepted.
-  const requestBuffer = await request.arrayBuffer();
+  const requestBuffer = await request.arrayBuffer()
   const clientMessage = await sendToClient(
     client,
     {
-      type: "REQUEST",
+      type: 'REQUEST',
       payload: {
         id: requestId,
         url: request.url,
@@ -230,38 +230,38 @@ async function getResponse(event, client, requestId) {
       },
     },
     [requestBuffer],
-  );
+  )
 
   switch (clientMessage.type) {
-    case "MOCK_RESPONSE": {
-      return respondWithMock(clientMessage.data);
+    case 'MOCK_RESPONSE': {
+      return respondWithMock(clientMessage.data)
     }
 
-    case "PASSTHROUGH": {
-      return passthrough();
+    case 'PASSTHROUGH': {
+      return passthrough()
     }
   }
 
-  return passthrough();
+  return passthrough()
 }
 
 function sendToClient(client, message, transferrables = []) {
   return new Promise((resolve, reject) => {
-    const channel = new MessageChannel();
+    const channel = new MessageChannel()
 
     channel.port1.onmessage = (event) => {
-      if (event.data?.error) {
-        return reject(event.data.error);
+      if (event.data && event.data.error) {
+        return reject(event.data.error)
       }
 
-      resolve(event.data);
-    };
+      resolve(event.data)
+    }
 
     client.postMessage(
       message,
       [channel.port2].concat(transferrables.filter(Boolean)),
-    );
-  });
+    )
+  })
 }
 
 async function respondWithMock(response) {
@@ -270,15 +270,15 @@ async function respondWithMock(response) {
   // instance will have status code set to 0. Since it's not possible to create
   // a Response instance with status code 0, handle that use-case separately.
   if (response.status === 0) {
-    return Response.error();
+    return Response.error()
   }
 
-  const mockedResponse = new Response(response.body, response);
+  const mockedResponse = new Response(response.body, response)
 
   Reflect.defineProperty(mockedResponse, IS_MOCKED_RESPONSE, {
     value: true,
     enumerable: true,
-  });
+  })
 
-  return mockedResponse;
+  return mockedResponse
 }