build(#10336): mock assets

packages/frontend/.storybook/main.ts

@@ -1,3 +1,4 @@
+import { resolve } from 'node:path';
 import type { StorybookConfig } from '@storybook/vue3-vite';
 import { mergeConfig } from 'vite';
 import { getConfig } from '../vite.config';
@@ -23,6 +24,7 @@ const config = {
 		const x = mergeConfig(config, {
 			...original,
 			build,
+			assetsInclude: [resolve(__dirname, '../node_modules/@tabler/icons-webfont/**/*.{css,eot,ttf,woff,woff2}')],
 		});
 		return x;
 	},

packages/frontend/.storybook/mocks.ts

@@ -0,0 +1,16 @@
+import { type SharedOptions, rest } from 'msw';
+
+export const onUnhandledRequest = ((req, print) => {
+	if (req.url.hostname !== 'localhost' || /^\/(?:client-assets\/|fluent-emojis?\/|iframe.html$|node_modules\/|sb-|static-assets\/|vite\/)/.test(req.url.pathname)) {
+		return
+	}
+	print.warning()
+}) satisfies SharedOptions['onUnhandledRequest'];
+
+export const commonHandlers = [
+	rest.get('/twemoji/:codepoints.svg', async (req, res, ctx) => {
+		const { codepoints } = req.params;
+		const file = await import(`../node_modules/@discordapp/twemoji/dist/svg/${codepoints}.svg?raw`);
+		return res(ctx.set('Content-Type', 'image/svg+xml'), ctx.body(file.default));
+	}),
+];

packages/frontend/.storybook/preview-head.html

@@ -1,3 +1,4 @@
+<link rel="stylesheet" href="../node_modules/@tabler/icons-webfont/tabler-icons.min.css">
 <script>
   window.global = window;
 </script>

packages/frontend/.storybook/preview.ts

@@ -1,10 +1,13 @@
 import { type Preview, setup } from '@storybook/vue3';
 import { initialize, mswDecorator } from 'msw-storybook-addon';
 import locale from './locale';
+import { commonHandlers, onUnhandledRequest } from './mocks';
 import theme from './theme';
 import '../src/style.scss';
 
-initialize();
+initialize({
+	onUnhandledRequest,
+});
 localStorage.setItem("locale", JSON.stringify(locale));
 Promise.all([
 	import('../src/components'),
@@ -23,6 +26,11 @@ const preview = {
 	decorators: [
 		mswDecorator,
 	],
+	parameters: {
+		msw: {
+			handlers: commonHandlers,
+		},
+	},
 } satisfies Preview;
 
 export default preview;

packages/frontend/public/mockServiceWorker.js

@@ -0,0 +1,303 @@
+/* eslint-disable */
+/* tslint:disable */
+
+/**
+ * Mock Service Worker (1.1.0).
+ * @see https://github.com/mswjs/msw
+ * - Please do NOT modify this file.
+ * - Please do NOT serve this file on production.
+ */
+
+const INTEGRITY_CHECKSUM = '3d6b9f06410d179a7f7404d4bf4c3c70'
+const activeClientIds = new Set()
+
+self.addEventListener('install', function () {
+  self.skipWaiting()
+})
+
+self.addEventListener('activate', function (event) {
+  event.waitUntil(self.clients.claim())
+})
+
+self.addEventListener('message', async function (event) {
+  const clientId = event.source.id
+
+  if (!clientId || !self.clients) {
+    return
+  }
+
+  const client = await self.clients.get(clientId)
+
+  if (!client) {
+    return
+  }
+
+  const allClients = await self.clients.matchAll({
+    type: 'window',
+  })
+
+  switch (event.data) {
+    case 'KEEPALIVE_REQUEST': {
+      sendToClient(client, {
+        type: 'KEEPALIVE_RESPONSE',
+      })
+      break
+    }
+
+    case 'INTEGRITY_CHECK_REQUEST': {
+      sendToClient(client, {
+        type: 'INTEGRITY_CHECK_RESPONSE',
+        payload: INTEGRITY_CHECKSUM,
+      })
+      break
+    }
+
+    case 'MOCK_ACTIVATE': {
+      activeClientIds.add(clientId)
+
+      sendToClient(client, {
+        type: 'MOCKING_ENABLED',
+        payload: true,
+      })
+      break
+    }
+
+    case 'MOCK_DEACTIVATE': {
+      activeClientIds.delete(clientId)
+      break
+    }
+
+    case 'CLIENT_CLOSED': {
+      activeClientIds.delete(clientId)
+
+      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
+    }
+  }
+})
+
+self.addEventListener('fetch', function (event) {
+  const { request } = event
+  const accept = request.headers.get('accept') || ''
+
+  // Bypass server-sent events.
+  if (accept.includes('text/event-stream')) {
+    return
+  }
+
+  // Bypass navigation requests.
+  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
+  }
+
+  // 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
+  }
+
+  // Generate unique request ID.
+  const requestId = Math.random().toString(16).slice(2)
+
+  event.respondWith(
+    handleRequest(event, requestId).catch((error) => {
+      if (error.name === 'NetworkError') {
+        console.warn(
+          '[MSW] Successfully emulated a network error for the "%s %s" request.',
+          request.method,
+          request.url,
+        )
+        return
+      }
+
+      // At this point, any exception indicates an issue with the original request/response.
+      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.`,
+        request.method,
+        request.url,
+        `${error.name}: ${error.message}`,
+      )
+    }),
+  )
+})
+
+async function handleRequest(event, 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 function () {
+      const clonedResponse = response.clone()
+      sendToClient(client, {
+        type: 'RESPONSE',
+        payload: {
+          requestId,
+          type: clonedResponse.type,
+          ok: clonedResponse.ok,
+          status: clonedResponse.status,
+          statusText: clonedResponse.statusText,
+          body:
+            clonedResponse.body === null ? null : await clonedResponse.text(),
+          headers: Object.fromEntries(clonedResponse.headers.entries()),
+          redirected: clonedResponse.redirected,
+        },
+      })
+    })()
+  }
+
+  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)
+
+  if (client?.frameType === 'top-level') {
+    return client
+  }
+
+  const allClients = await self.clients.matchAll({
+    type: 'window',
+  })
+
+  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 })
+  }
+
+  // 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.
+  const clientMessage = await sendToClient(client, {
+    type: 'REQUEST',
+    payload: {
+      id: requestId,
+      url: request.url,
+      method: request.method,
+      headers: Object.fromEntries(request.headers.entries()),
+      cache: request.cache,
+      mode: request.mode,
+      credentials: request.credentials,
+      destination: request.destination,
+      integrity: request.integrity,
+      redirect: request.redirect,
+      referrer: request.referrer,
+      referrerPolicy: request.referrerPolicy,
+      body: await request.text(),
+      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) {
+  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)
+    }
+
+    client.postMessage(message, [channel.port2])
+  })
+}
+
+function sleep(timeMs) {
+  return new Promise((resolve) => {
+    setTimeout(resolve, timeMs)
+  })
+}
+
+async function respondWithMock(response) {
+  await sleep(response.delay)
+  return new Response(response.body, response)
+}

packages/frontend/vite.config.ts

@@ -1,7 +1,6 @@
 import path from 'path';
 import pluginVue from '@vitejs/plugin-vue';
-import { defineConfig } from 'vite';
+import { type UserConfig, defineConfig } from 'vite';
-import { configDefaults as vitestConfigDefaults } from 'vitest/config';
 
 import locales from '../../locales';
 import meta from '../../package.json';
@@ -38,7 +37,7 @@ function toBase62(n: number): string {
 	return result;
 }
 
-export function getConfig() {
+export function getConfig(): UserConfig {
 	return {
 		base: '/vite/',
 
@@ -62,7 +61,7 @@ export function getConfig() {
 
 		css: {
 			modules: {
-				generateScopedName: (name, filename, css) => {
+				generateScopedName(name, filename, _css): string {
 					const id = (path.relative(__dirname, filename.split('?')[0]) + '-' + name).replace(/[\\\/\.\?&=]/g, '-').replace(/(src-|vue-)/g, '');
 					if (process.env.NODE_ENV === 'production') {
 						return 'x' + toBase62(hash(id)).substring(0, 4);