refactor chatwidget code, add prefetching emotes

src/web/chatWidget/message.ts

@@ -0,0 +1,28 @@
+import { EventSubChannelChatMessageEvent, EventSubChannelChatMessageDeleteEvent, EventSubChannelBanEvent } from "@twurple/eventsub-base";
+import { sendTwitchChatEvent } from "./widgetServerFunctions";
+
+export async function addMessageToChatWidget(msg: EventSubChannelChatMessageEvent) {
+  await sendTwitchChatEvent({
+    function: 'createMessage',
+    messageParts: msg.messageParts,
+    displayName: msg.chatterDisplayName,
+    chatterId: msg.chatterId,
+    chatterColor: msg.color,
+    messageId: msg.messageId,
+    badgeData: msg.badges
+  });
+};
+
+export async function deleteMessageFromChatWidget(msg: EventSubChannelChatMessageDeleteEvent) {
+  await sendTwitchChatEvent({
+    function: 'deleteMessage',
+    messageId: msg.messageId
+  })
+};
+
+export async function deleteBannedUserMessagesFromChatWidget(msg: EventSubChannelBanEvent) {
+  sendTwitchChatEvent({
+    function: 'userBan',
+    chatterId: msg.userId
+  });
+}

src/web/chatWidget/websockettypes.ts

@@ -0,0 +1,78 @@
+export type createMessageEvent = {
+  function: 'createMessage';
+  messageParts: EventSubChatMessagePart[];
+  messageId: string;
+  displayName: string;
+  chatterId: string;
+  chatterColor: null | string;
+  badgeData: Record<string, string>;
+};
+
+export type deleteMessageEvent = {
+  function: 'deleteMessage';
+  messageId: string;
+};
+export type userBanEvent = {
+  function: 'userBan';
+  chatterId: string;
+};
+export type serverNotificationEvent = {
+  function: 'serverNotification';
+  message: string;
+};
+
+export type twitchEventData =
+  createMessageEvent
+  | deleteMessageEvent
+  | userBanEvent
+  | serverNotificationEvent;
+
+// The types below are taken straight from @twurple/eventsub-base
+// I would import this from the package, but that's impossible
+export interface EventSubChatMessageTextPart {
+  type: 'text';
+  text: string;
+}
+
+export interface EventSubChatMessageCheermote {
+  prefix: string;
+  bits: number;
+  tier: number;
+}
+
+export interface EventSubChatMessageCheermotePart {
+  type: 'cheermote';
+  text: string;
+  cheermote: EventSubChatMessageCheermote;
+}
+
+export interface EventSubChatMessageEmote {
+  id: string;
+  emote_set_id: string;
+  owner_id: string;
+  format: string[];
+}
+
+export interface EventSubChatMessageEmotePart {
+  type: 'emote';
+  text: string;
+  emote: EventSubChatMessageEmote;
+}
+
+export interface EventSubChatMessageMention {
+  user_id: string;
+  user_name: string;
+  user_login: string;
+}
+
+export interface EventSubChatMessageMentionPart {
+  type: 'mention';
+  text: string;
+  mention: EventSubChatMessageMention;
+}
+
+export type EventSubChatMessagePart =
+  | EventSubChatMessageTextPart
+  | EventSubChatMessageCheermotePart
+  | EventSubChatMessageEmotePart
+  | EventSubChatMessageMentionPart;

src/web/chatWidget/widgetServerFunctions.ts

@@ -0,0 +1,74 @@
+import { streamerId, chatterApi } from "../..";
+
+type badgeObject = {
+  [key: string]: {
+    [key: string]: string;
+  };
+};
+
+type emoteObject = {
+  [key: string]: string;
+};
+
+export async function getBadges() {
+  const globalBadges = chatterApi.chat.getGlobalBadges();
+  const channelBadges = chatterApi.chat.getChannelBadges(streamerId);
+  const rawBadges = await Promise.all([globalBadges, channelBadges]);
+
+  const newObj: badgeObject = {};
+  parseRawBadges(newObj, rawBadges[0]);
+  parseRawBadges(newObj, rawBadges[1]);
+
+  return Response.json(newObj);
+};
+
+export async function getExternalEmotes() {
+  const [bttvglobal, bttvuser, ffzglobal, ffzuser, seventvglobal, seventvuser] = await Promise.all([
+    fetch("https://api.betterttv.net/3/cached/emotes/global").then(a => a.json() as any),
+    fetch("https://api.betterttv.net/3/cached/users/twitch/" + streamerId).then(a => a.json() as any),
+    fetch("https://api.frankerfacez.com/v1/set/global").then(a => a.json() as any),
+    fetch("https://api.frankerfacez.com/v1/room/id/" + streamerId).then(a => a.json() as any),
+    fetch("https://7tv.io/v3/emote-sets/global").then(a => a.json() as any),
+    fetch("https://7tv.io/v3/users/twitch/" + streamerId).then(a => a.json() as any)
+  ]);
+  const emotes: emoteObject = {};
+  for (const a of bttvglobal) {
+    emotes[a.code] = `https://cdn.betterttv.net/emote/${a.id}/3x.${a.imageType}`;
+  };
+  for (const a of bttvuser.sharedEmotes) {
+    emotes[a.code] = `https://cdn.betterttv.net/emote/${a.id}/3x.${a.imageType}`;
+  };
+  for (const a of ffzglobal.default_sets) {
+    for (const b of ffzglobal.sets[a].emoticons) {
+      emotes[b.name] = `https://cdn.frankerfacez.com/emote/${b.id}/4`;
+    };
+  };
+  for (const a of ffzuser.sets[ffzuser.room.set].emoticons) {
+    emotes[a.name] = `https://cdn.frankerfacez.com/emote/${a.id}/4`;
+  }
+  for (const a of seventvglobal.emotes) {
+    emotes[a.name] = `https://cdn.7tv.app/emote/${a.id}/4x.avif`;
+  };
+  for (const a of seventvuser.emote_set.emotes) {
+    emotes[a.name] = `https://cdn.7tv.app/emote/${a.id}/4x.avif`;
+  };
+  return Response.json(emotes);
+}
+
+import { HelixChatBadgeSet } from "@twurple/api";
+
+function parseRawBadges(returnobj: badgeObject, data: HelixChatBadgeSet[]) {
+  for (const badge of data) {
+    if (!returnobj[badge.id]) returnobj[badge.id] = {};
+    for (const version of badge.versions) {
+      returnobj[badge.id]![version.id] = version.getImageUrl(4);
+    };
+  };
+};
+
+import server from "..";
+import type { twitchEventData } from "./websockettypes";
+
+export async function sendTwitchChatEvent(event: twitchEventData) {
+  server.publish('twitchchat', JSON.stringify(event));
+};

src/web/chatWidget/www/index.html

@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>qwerinope's chat widget</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="./src/main.ts"></script>
+  </body>
+</html>

src/web/chatWidget/www/src/createMessage.ts

@@ -0,0 +1,122 @@
+const popover = document.createElement('div')
+Object.assign(popover.style, {
+  position: 'fixed',
+  top: '20px',
+  right: '20px',
+  background: 'rgba(0, 0, 0, 0.85)',
+  color: 'white',
+  padding: '10px 20px',
+  borderRadius: '5px',
+  fontSize: '9vmin',
+  zIndex: 9999
+});
+popover.textContent = 'Loading...'
+document.body.appendChild(popover);
+
+const [badges, emotes] = await Promise.all([
+  fetch(`http://${location.host}/chat/getBadges`).then(data => data.json()),
+  fetch(`http://${location.host}/chat/getEmotes`).then(data => data.json())
+]);
+
+await prefetchImages(Object.values(emotes));
+
+popover.remove();
+
+async function prefetchImages(urls: string[], maxRetries = 3, retryDelay = 500) {
+  const sleep = (ms: number) => new Promise(res => setTimeout(res, ms));
+
+  const loadImage = async (url: string) => {
+    for (let attempt = 1; attempt <= maxRetries; attempt++) {
+      try {
+        await new Promise((resolve, reject) => {
+          const img = new Image();
+          img.onload = () => resolve(true);
+          img.onerror = () => reject();
+          img.src = url;
+        });
+      } catch (err) {
+        if (attempt < maxRetries) await sleep(retryDelay);
+      };
+    };
+  };
+
+  await Promise.all(urls.map(url => loadImage(url)));
+};
+
+import { type createMessageEvent } from '../../websockettypes';
+
+export function parseMessage(data: createMessageEvent): HTMLDivElement {
+  const parentDiv = document.createElement('div');
+  parentDiv.className = 'message';
+
+  // Badge Parsing
+  const badgeContainer = document.createElement('div');
+  badgeContainer.className = 'badgeContainer';
+  for (const badge of Object.entries(data.badgeData)) {
+    const badgeElement = document.createElement('img');
+    badgeElement.className = 'badgeElement';
+    const currentbadge = badges[badge[0]][badge[1]];
+    badgeElement.src = currentbadge;
+    badgeContainer.appendChild(badgeElement);
+  };
+  parentDiv.appendChild(badgeContainer);
+
+  const chatterName = document.createElement('span');
+  chatterName.style = `color: ${data.chatterColor ?? "#00ff00"}`;
+  chatterName.innerText = data.displayName;
+  chatterName.className = "chatterName";
+  parentDiv.appendChild(chatterName);
+
+  const seperator = document.createElement('span');
+  seperator.innerText = ":";
+  seperator.className = "chatMessageSeparator";
+  parentDiv.appendChild(seperator);
+
+  const textElement = document.createElement('div');
+  textElement.className = "chatMessage"
+  for (const messagePart of data.messageParts) {
+    let messageElement;
+    switch (messagePart.type) {
+      case 'text':
+        messageElement = document.createElement('div');
+        messageElement.className = "textMessage";
+        let temparray: string[] = [];
+        for (const part of messagePart.text.split(' ')) {
+          if (emotes[part]) {
+            const messagepart = document.createElement('span');
+            messagepart.className = 'textPart';
+            messagepart.innerText = temparray.join(' ');
+            messageElement.appendChild(messagepart);
+            temparray = []; // We flush the array of all pieces of text
+            const emotePart = document.createElement('img');
+            emotePart.className = 'emotePart';
+            emotePart.src = emotes[part];
+            messageElement.appendChild(emotePart);
+          } else {
+            temparray.push(part);
+          };
+        };
+        const finalmessagepart = document.createElement('span');
+        finalmessagepart.className = 'textPart';
+        finalmessagepart.innerText = temparray.join(' ');
+        messageElement.appendChild(finalmessagepart);
+        break;
+      case 'cheermote':
+        messageElement = document.createElement('img');
+        break;
+      case 'emote':
+        messageElement = document.createElement('img');
+        messageElement.className = "emoteMessage";
+        messageElement.src = `https://static-cdn.jtvnw.net/emoticons/v2/${messagePart.emote.id}/default/dark/3.0`;
+        break;
+      case 'mention':
+        messageElement = document.createElement('span');
+        messageElement.innerText = `Replying to ${messagePart.text}`;
+        messageElement.className = "replyMessage";
+        break;
+    };
+    textElement.appendChild(messageElement);
+  };
+  parentDiv.appendChild(textElement);
+  return parentDiv;
+};

src/web/chatWidget/www/src/main.ts

@@ -0,0 +1,38 @@
+import './style.css';
+
+import { type twitchEventData } from "../../websockettypes";
+import { parseMessage } from './createMessage';
+
+const socket = new WebSocket(`ws://${location.host}`);
+
+socket.onopen = () => {
+  socket.send(JSON.stringify({
+    type: 'subscribe',
+    target: 'twitchchat'
+  }));
+};
+
+socket.onmessage = event => {
+  const data: twitchEventData = JSON.parse(event.data);
+  switch (data.function) {
+    case 'createMessage':
+      const newMessageElement = parseMessage(data);
+      newMessageElement.id = data.messageId;
+      newMessageElement.classList.add(data.chatterId);
+      document.querySelector("#message-container")?.appendChild(newMessageElement);
+      break;
+    case 'deleteMessage':
+      document.querySelectorAll(`#${CSS.escape(data.messageId)}`).forEach(msg => msg.remove());
+      break;
+    case 'userBan':
+      document.querySelectorAll(`.${CSS.escape(data.chatterId)}`).forEach(msg => msg.remove());
+      break;
+    case 'serverNotification':
+      console.log(data.message);
+      break;
+  };
+};
+
+document.querySelector<HTMLDivElement>('#app')!.innerHTML = `
+  <div id="message-container"></div>
+`;

src/web/chatWidget/www/src/style.css

@@ -0,0 +1,52 @@
+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+#app {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+}
+
+.message {
+  display: flex;
+
+  .chatMessage {
+    display: flex;
+  }
+
+  .replyMessage {
+    color: grey;
+    font-size: 2px;
+  }
+
+  padding: 2px;
+}
+
+img {
+  vertical-align: middle;
+  height: 18px;
+  padding: 1px;
+}
+
+.chatMessageSeparator {
+  margin-right: 5px
+}

src/web/chatWidget/www/tsconfig.json

@@ -0,0 +1,105 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+    /* Language and Environment */
+    "target": "es2020", /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "jsx": "preserve",                                /* Specify what JSX code is generated. */
+    // "libReplacement": true,                           /* Enable lib replacement. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
+    // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+    // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+    // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+    // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+    // "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+    /* Modules */
+    "module": "esnext", /* Specify what module code is generated. */
+    // "rootDir": "./",                                  /* Specify the root folder within your source files. */
+    // "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+    // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+    // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+    // "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
+    // "rewriteRelativeImportExtensions": true,          /* Rewrite '.ts', '.tsx', '.mts', and '.cts' file extensions in relative import paths to their JavaScript equivalent in output files. */
+    // "resolvePackageJsonExports": true,                /* Use the package.json 'exports' field when resolving package imports. */
+    // "resolvePackageJsonImports": true,                /* Use the package.json 'imports' field when resolving imports. */
+    // "customConditions": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
+    // "noUncheckedSideEffectImports": true,             /* Check side effect imports. */
+    // "resolveJsonModule": true,                        /* Enable importing .json files. */
+    // "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */
+    // "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+    /* JavaScript Support */
+    // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+    // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+    /* Emit */
+    // "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    // "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
+    // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+    // "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
+    // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+    // "noEmit": true,                                   /* Disable emitting files from a compilation. */
+    // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+    // "outDir": "./",                                   /* Specify an output folder for all emitted files. */
+    // "removeComments": true,                           /* Disable emitting comments. */
+    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+    // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+    // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+    // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+    // "newLine": "crlf",                                /* Set the newline character for emitting files. */
+    // "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+    // "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+    // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+    // "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+    // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+    /* Interop Constraints */
+    // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+    // "verbatimModuleSyntax": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
+    // "isolatedDeclarations": true,                     /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */
+    // "erasableSyntaxOnly": true,                       /* Do not allow runtime constructs that are not part of ECMAScript. */
+    // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true, /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+    "forceConsistentCasingInFileNames": true, /* Ensure that casing is correct in imports. */
+    /* Type Checking */
+    "strict": true, /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                         /* When type checking, take into account 'null' and 'undefined'. */
+    // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+    // "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+    // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+    // "strictBuiltinIteratorReturn": true,              /* Built-in iterators are instantiated with a 'TReturn' type of 'undefined' instead of 'any'. */
+    // "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+    // "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+    // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+    // "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+    // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+    // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+    // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+    // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+    // "noUncheckedIndexedAccess": true,                 /* Add 'undefined' to a type when accessed using an index. */
+    // "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
+    // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+    // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+    // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+    /* Completeness */
+    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+    "skipLibCheck": true /* Skip type checking all .d.ts files. */
+  }
+}

src/web/index.ts

@@ -0,0 +1,51 @@
+import logger from "../lib/logger";
+import { getBadges, getExternalEmotes } from "./chatWidget/widgetServerFunctions";
+import chatWidget from "./chatWidget/www/index.html";
+import { sendTwitchChatEvent } from "./chatWidget/widgetServerFunctions";
+
+const port = Number(process.env.WEB_PORT);
+if (isNaN(port)) { logger.enverr("WEB_PORT"); process.exit(1); };
+
+export default Bun.serve({
+  port,
+  fetch(request, server) {
+    if (server.upgrade(request)) return;
+    return new Response('oops', { status: 500 });
+  },
+  routes: {
+    "/chat": chatWidget,
+    "/chat/getBadges": getBadges,
+    "/chat/getEmotes": getExternalEmotes
+  },
+  websocket: {
+    open(_ws) {
+      sendTwitchChatEvent({
+        function: 'serverNotification',
+        message: 'Sucessfully opened websocket connection'
+      });
+    },
+    message(ws, omessage) {
+      const message = JSON.parse(omessage.toString());
+      if (!message.type) return;
+      switch (message.type) {
+        case 'subscribe':
+          if (!message.target) return;
+          ws.subscribe(message.target);
+          sendTwitchChatEvent({
+            function: 'serverNotification',
+            message: `Successfully subscribed to all ${message.target} events`
+          });
+          break;
+      };
+    },
+    close(ws) {
+      ws.close();
+    }
+  },
+  development: true,
+  error(error) {
+    logger.err(`Error at chatwidget server: ${error}`);
+    return new Response("Internal Server Error", { status: 500 })
+  },
+});
+