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{"version":3,"sources":["../src/bing-chat.ts","../src/fetch.ts"],"sourcesContent":["import crypto from 'node:crypto'\n\nimport WebSocket from 'ws'\n\nimport * as types from './types'\nimport { fetch } from './fetch'\n\nconst terminalChar = '\u001e'\n\nexport class BingChat {\n protected _cookie: string\n protected _debug: boolean\n\n constructor(opts: {\n cookie: string\n\n /** @defaultValue `false` **/\n debug?: boolean\n }) {\n const { cookie, debug = false } = opts\n\n this._cookie = cookie\n this._debug = !!debug\n\n if (!this._cookie) {\n throw new Error('Bing cookie is required')\n }\n }\n\n /**\n * Sends a message to Bing Chat, waits for the response to resolve, and returns\n * the response.\n *\n * If you want to receive a stream of partial responses, use `opts.onProgress`.\n *\n * @param message - The prompt message to send\n * @param opts.conversationId - Optional ID of a conversation to continue (defaults to a random UUID)\n * @param opts.onProgress - Optional callback which will be invoked every time the partial response is updated\n *\n * @returns The response from Bing Chat\n */\n async sendMessage(\n text: string,\n opts: types.SendMessageOptions = {}\n ): Promise<types.ChatMessage> {\n const {\n invocationId = '1',\n onProgress,\n locale = 'en-US',\n market = 'en-US',\n region = 'US',\n location,\n messageType = 'Chat',\n variant = 'Balanced'\n } = opts\n\n let { conversationId, clientId, conversationSignature } = opts\n const isStartOfSession = !(\n conversationId &&\n clientId &&\n conversationSignature\n )\n\n if (isStartOfSession) {\n const conversation = await this.createConversation()\n conversationId = conversation.conversationId\n clientId = conversation.clientId\n conversationSignature = conversation.conversationSignature\n }\n\n const result: types.ChatMessage = {\n author: 'bot',\n id: crypto.randomUUID(),\n conversationId,\n clientId,\n conversationSignature,\n invocationId: `${parseInt(invocationId, 10) + 1}`,\n text: ''\n }\n\n const responseP = new Promise<types.ChatMessage>(\n async (resolve, reject) => {\n const chatWebsocketUrl = 'wss://sydney.bing.com/sydney/ChatHub'\n const ws = new WebSocket(chatWebsocketUrl, {\n perMessageDeflate: false,\n headers: {\n 'accept-language': 'en-US,en;q=0.9',\n 'cache-control': 'no-cache',\n pragma: 'no-cache'\n }\n })\n\n let isFulfilled = false\n\n function cleanup() {\n ws.close()\n ws.removeAllListeners()\n }\n\n ws.on('error', (error) => {\n console.warn('WebSocket error:', error)\n cleanup()\n if (!isFulfilled) {\n isFulfilled = true\n reject(new Error(`WebSocket error: ${error.toString()}`))\n }\n })\n ws.on('close', () => {\n // TODO\n })\n\n ws.on('open', () => {\n ws.send(`{\"protocol\":\"json\",\"version\":1}${terminalChar}`)\n })\n let stage = 0\n\n ws.on('message', (data) => {\n const objects = data.toString().split(terminalChar)\n\n const messages = objects\n .map((object) => {\n try {\n return JSON.parse(object)\n } catch (error) {\n return object\n }\n })\n .filter(Boolean)\n\n if (!messages.length) {\n return\n }\n\n if (stage === 0) {\n ws.send(`{\"type\":6}${terminalChar}`)\n\n const traceId = crypto.randomBytes(16).toString('hex')\n\n // example location: 'lat:47.639557;long:-122.128159;re=1000m;'\n const locationStr = location\n ? `lat:${location.lat};long:${location.lng};re=${\n location.re || '1000m'\n };`\n : undefined\n\n // Sets the correct options for the variant of the model\n const optionsSets = [\n 'nlu_direct_response_filter',\n 'deepleo',\n 'enable_debug_commands',\n 'disable_emoji_spoken_text',\n 'responsible_ai_policy_235',\n 'enablemm'\n ]\n if (variant == 'Balanced') {\n optionsSets.push('galileo')\n } else {\n optionsSets.push('clgalileo')\n if (variant == 'Creative') {\n optionsSets.push('h3imaginative')\n } else if (variant == 'Precise') {\n optionsSets.push('h3precise')\n }\n }\n const params = {\n arguments: [\n {\n source: 'cib',\n optionsSets,\n allowedMessageTypes: [\n 'Chat',\n 'InternalSearchQuery',\n 'InternalSearchResult',\n 'InternalLoaderMessage',\n 'RenderCardRequest',\n 'AdsQuery',\n 'SemanticSerp'\n ],\n sliceIds: [],\n traceId,\n isStartOfSession,\n message: {\n locale,\n market,\n region,\n location: locationStr,\n author: 'user',\n inputMethod: 'Keyboard',\n messageType,\n text\n },\n conversationSignature,\n participant: { id: clientId },\n conversationId\n }\n ],\n invocationId,\n target: 'chat',\n type: 4\n }\n\n if (this._debug) {\n console.log(chatWebsocketUrl, JSON.stringify(params, null, 2))\n }\n\n ws.send(`${JSON.stringify(params)}${terminalChar}`)\n\n ++stage\n return\n }\n\n for (const message of messages) {\n // console.log(JSON.stringify(message, null, 2))\n\n if (message.type === 1) {\n const update = message as types.ChatUpdate\n const msg = update.arguments[0].messages?.[0]\n\n if (!msg) continue\n\n // console.log('RESPONSE0', JSON.stringify(update, null, 2))\n\n if (!msg.messageType) {\n result.author = msg.author\n result.text = msg.text\n result.detail = msg\n\n onProgress?.(result)\n }\n } else if (message.type === 2) {\n const response = message as types.ChatUpdateCompleteResponse\n if (this._debug) {\n console.log('RESPONSE', JSON.stringify(response, null, 2))\n }\n const validMessages = response.item.messages?.filter(\n (m) => !m.messageType\n )\n const lastMessage = validMessages?.[validMessages?.length - 1]\n\n if (lastMessage) {\n result.conversationId = response.item.conversationId\n result.conversationExpiryTime =\n response.item.conversationExpiryTime\n\n result.author = lastMessage.author\n result.text = lastMessage.text\n result.detail = lastMessage\n\n if (!isFulfilled) {\n isFulfilled = true\n resolve(result)\n }\n }\n } else if (message.type === 3) {\n if (!isFulfilled) {\n isFulfilled = true\n resolve(result)\n }\n\n cleanup()\n return\n } else {\n // TODO: handle other message types\n // these may be for displaying \"adaptive cards\"\n // console.warn('unexpected message type', message.type, message)\n }\n }\n })\n }\n )\n\n return responseP\n }\n\n async createConversation(): Promise<types.ConversationResult> {\n const requestId = crypto.randomUUID()\n\n const cookie = this._cookie.includes(';')\n ? this._cookie\n : `_U=${this._cookie}`\n\n return fetch('https://www.bing.com/turing/conversation/create', {\n headers: {\n accept: 'application/json',\n 'accept-language': 'en-US,en;q=0.9',\n 'content-type': 'application/json',\n 'sec-ch-ua':\n '\"Not_A Brand\";v=\"99\", \"Microsoft Edge\";v=\"109\", \"Chromium\";v=\"109\"',\n 'sec-ch-ua-arch': '\"x86\"',\n 'sec-ch-ua-bitness': '\"64\"',\n 'sec-ch-ua-full-version': '\"109.0.1518.78\"',\n 'sec-ch-ua-full-version-list':\n '\"Not_A Brand\";v=\"99.0.0.0\", \"Microsoft Edge\";v=\"109.0.1518.78\", \"Chromium\";v=\"109.0.5414.120\"',\n 'sec-ch-ua-mobile': '?0',\n 'sec-ch-ua-model': '',\n 'sec-ch-ua-platform': '\"macOS\"',\n 'sec-ch-ua-platform-version': '\"12.6.0\"',\n 'sec-fetch-dest': 'empty',\n 'sec-fetch-mode': 'cors',\n 'sec-fetch-site': 'same-origin',\n 'x-edge-shopping-flag': '1',\n 'x-ms-client-request-id': requestId,\n 'x-ms-useragent':\n 'azsdk-js-api-client-factory/1.0.0-beta.1 core-rest-pipeline/1.10.0 OS/MacIntel',\n cookie\n },\n referrer: 'https://www.bing.com/search',\n referrerPolicy: 'origin-when-cross-origin',\n body: null,\n method: 'GET',\n mode: 'cors',\n credentials: 'include'\n }).then((res) => {\n if (res.ok) {\n return res.json()\n } else {\n throw new Error(\n `unexpected HTTP error createConversation ${res.status}: ${res.statusText}`\n )\n }\n })\n }\n}\n","/// <reference lib=\"dom\" />\n\nconst fetch = globalThis.fetch\n\nif (typeof fetch !== 'function') {\n throw new Error('Invalid environment: global fetch not defined')\n}\n\nexport { fetch 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