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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {

    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }

    return new (P || (P = Promise))(function (resolve, reject) {

        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }

        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }

        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }

        step((generator = generator.apply(thisArg, _arguments || [])).next());

var __importDefault = (this && this.__importDefault) || function (mod) {

    return (mod && mod.__esModule) ? mod : { "default": mod };

Object.defineProperty(exports, "__esModule", { value: true });

exports.getCandles = exports.connect = void 0;

const axios_1 = __importDefault(require("axios"));

const ws_1 = __importDefault(require("ws"));

const randomstring_1 = __importDefault(require("randomstring"));

const MAX_BATCH_SIZE = 5000; // found experimentally

    const events = message.toString().split(/~m~\d+~m~/).slice(1);

        if (event.substring(0, 3) === "~h~") {

            return { type: 'ping', data: `~m~${event.length}~m~${event}` };

        const parsed = JSON.parse(event);

            return { type: 'session', data: parsed };

        return { type: 'event', data: parsed };

    return __awaiter(this, void 0, void 0, function* () {

        let token = 'unauthorized_user_token';

            const resp = yield (0, axios_1.default)({

                url: 'https://www.tradingview.com/disclaimer/',

                headers: { "Cookie": `sessionid=${options.sessionId}` }

            token = resp.data.match(/"auth_token":"(.+?)"/)[1];

        const connection = new ws_1.default("wss://prodata.tradingview.com/socket.io/websocket", {

            origin: "https://prodata.tradingview.com"

                subscribers.delete(handler);

            const data = JSON.stringify({ m: name, p: params });

            const message = "~m~" + data.length + "~m~" + data;

            return __awaiter(this, void 0, void 0, function* () {

                return new Promise((resolve, reject) => {

                    connection.on('close', resolve);

                    connection.on('error', reject);

        return new Promise((resolve, reject) => {

            connection.on('error', error => reject(error));

            connection.on('message', message => {

                const payloads = parseMessage(message.toString());

                for (const payload of payloads) {

                    switch (payload.type) {

                            connection.send(payload.data);

                            send('set_auth_token', [token]);

                            resolve({ subscribe, send, close });

                            const event = {

                                name: payload.data.m,

                                params: payload.data.p

                            subscribers.forEach(handler => handler(event));

                            throw new Error(`unknown payload: ${payload}`);

function getCandles({ connection, symbols, amount, timeframe = 60 }) {

                // loaded all requested candles

                if (event.name === 'series_completed') {

                    if (currentSymCandles.length % batchSize === 0 && (!amount || currentSymCandles.length < amount)) {

                if (['series_completed', 'symbol_error'].includes(event.name)) {

                    const loadedCount = currentSymCandles.length;

                    if (loadedCount > 0 && loadedCount % batchSize === 0 && (!amount || loadedCount < amount)) {

                        connection.send('request_more_data', [chartSession, 'sds_1', batchSize]);

                    // loaded all candles for current symbol

                        currentSymCandles = currentSymCandles.slice(0, amount);

                    const candles = currentSymCandles.map(c => ({

                        timestamp: c.v[0],

                    allCandles.push(candles);

                    if (symbols.length - 1 > currentSymIndex) {

                        currentSymCandles = [];

                        currentSymIndex += 1;

                        symbol = symbols[currentSymIndex];

                        connection.send('resolve_symbol', [

                            chartSession,

                            `sds_sym_${currentSymIndex}`,

                            '=' + JSON.stringify({ symbol, adjustment: 'splits' })

                        connection.send('modify_series', [

                            `s${currentSymIndex}`,

                            timeframe.toString(),

                    // all symbols loaded

            connection.send('chart_create_session', [chartSession, '']);

            connection.send('resolve_symbol', [

                '=' + JSON.stringify({ symbol, adjustment: 'splits' })

            connection.send('create_series', [

                chartSession, 'sds_1', 's0', 'sds_sym_0', timeframe.toString(), batchSize, ''

  "description": "Tradingview websocket API",

  "repository": "https://github.com/endenwer/tradingview-ws.git",

    "prepublishOnly": "npm run typecheck && npm run test && npm run build",

    "test": "mocha -r ts-node/register src/**/*.spec.ts",

  "author": "Stepan Lusnikov <endenwer@gmail.com>",

Unofficial library to interact with websockets on Tradingview.

- Authorization with session id from cookies

- Fetching candlesticks for any symbol with any available timeframe

import { connect, getCandles } from 'tradingview-ws'

  console.log(`Candles for AUDCAD:`, candles[0])

  console.log(`Candles for AUDCHF:`, candles[1])

### `connect(options: ConnectionOptions = {}): Promise<TradingviewConnection>`

Creates new connection to tradingview websockets. Returns `TradingviewConnection`.

* `sessionId?: string` - authorize connection if present. Can be received from cookies.

### `getCandles({ connection, symbols, amount, timeframe = 60 }: GetCandlesParams)`

Fetches all available candles for symbols. The maximum amount is around 13_000 candles for the hourly timeframe. Returns an array where each element is an array of candles for one symbol in the order it passed to the function.

		{
		"name": "tradingview-ws",
		"version": "0.0.2",
		"version": "0.0.3",
		"description": "Tradingview websocket API",
		@@ -5,0 +5,0 @@ "repository": "https://github.com/endenwer/tradingview-ws.git",

		@@ -54,4 +54,4 @@ ## Tradingview websockets integration

		* `subscribe: (handler: Subscriber) => Unsubscriber` - subscribe to wesockets events
		* `send: (name: string, params: any[]) => void` - send command to websocket
		* `subscribe: (handler: Subscriber) => Unsubscriber` - subscribe to websockets events
		* `send: (name: string, params: any[]) => void` - send command to websockets
		* `close: () => Promise<void>` - close the connection

		@@ -34,2 +34,14 @@ import { expect } from 'chai'
		})

		it('returns empty candles for incorrect symbol', async function() {
		const connection = await connect()
		const candles = await getCandles({
		connection,
		symbols: ['FX:AUDCAD', 'UNKNOWN'],
		})
		await connection.close()

		expect(candles[0].length).to.gt(10_000)
		expect(candles[1].length).to.eq(0)
		})
		})

		@@ -122,4 +122,5 @@ "use strict";
		// loaded all requested candles
		if (event.name === 'series_completed') {
		if (currentSymCandles.length % batchSize === 0 && (!amount \|\| currentSymCandles.length < amount)) {
		if (['series_completed', 'symbol_error'].includes(event.name)) {
		const loadedCount = currentSymCandles.length;
		if (loadedCount > 0 && loadedCount % batchSize === 0 && (!amount \|\| loadedCount < amount)) {
		connection.send('request_more_data', [chartSession, 'sds_1', batchSize]);
		@@ -126,0 +127,0 @@ return;

		@@ -169,4 +169,5 @@ import axios from 'axios'
		// loaded all requested candles
		if (event.name === 'series_completed') {
		if (currentSymCandles.length % batchSize === 0 && (!amount \|\| currentSymCandles.length < amount)) {
		if (['series_completed', 'symbol_error'].includes(event.name)) {
		const loadedCount = currentSymCandles.length
		if (loadedCount > 0 && loadedCount % batchSize === 0 && (!amount \|\| loadedCount < amount)) {
		connection.send('request_more_data', [chartSession, 'sds_1', batchSize])
		@@ -173,0 +174,0 @@ return

Improved metrics