v2.0.0

[2.0.0] — 2026-04-10

First release of the V2 architecture. Complete rewrite with a new
public API, full TypeScript types, and a clean lifecycle model.

See MIGRATION.md for the full 1.x → 2.0 guide.

Added

Public API

• tv(options) factory function returning a Client.
• Client with lifecycle (connect, disconnect, events, Symbol.asyncDispose).
• TvSymbol with price(), snapshot(), info(), candles(), stream().
• Stream with typed events (price, change, update, bar, error),
  Symbol.dispose, and Symbol.asyncIterator.
• Portfolio — ad-hoc multi-symbol collection (client.symbols([...])).
• Group — named, mutable collection with live add / remove /
  has / clear propagating to active streams.
• GroupRegistry — Map-like container at client.groups.
• MultiStream — shared multi-symbol stream base used by Portfolio,
  Group, and client.stream().
• client.stream() — aggregate multi-symbol stream with automatic
  dedup across overlapping groups.
• Full typed quote field system:
  QuoteField, QuoteFieldTypeMap, QuoteSnapshot<F>,
  FullQuoteSnapshot, TradeTick, BarTick.
• Candle types: Candle, Timeframe, RawTimeframe,
  TimeframeAlias, normalizeTimeframe.
• SymbolInfo with camelCase fields and an index signature for
  forward-compatibility.
• Error hierarchy: TvError, TvConnectionError, TvProtocolError,
  TvSessionError, TvSymbolError, TvTimeoutError.

Internal API

The tradingview-api-adapter/internal subpath exports low-level
primitives for advanced users. These are semver-exempt — breaking
changes may happen in minor versions.

• Transport — WebSocket lifecycle with reconnect and buffering.
• Protocol — pure encodeFrame/decodeFrames/encodeCommand/encodeHeartbeat.
• SessionManager — transport owner, heartbeat, routing, replay.
• QuoteSession / ChartSession — TradingView session logic.
• SymbolBatcher — the rate limiter used to coalesce add/remove ops.
• Utilities: calculateBackoff, randomId, createLogger,
  kebabToCamel, transformKeys, symbolInfoFromRaw.

Resilience

• Automatic reconnect with exponential backoff + jitter.
• Session replay: quote and chart sessions are re-registered after
  reconnect so consumer code never sees the outage.
• Heartbeat auto-response handled inside SessionManager.
• Rate limiter with 50 ms micro-batching, 50-symbol chunks, and
  cancel-within-window dedup (add('X') + remove('X') in the same
  window emits nothing).

Authentication

• auth.sessionid / auth.sessionidSign — sent as Cookie header
  on the WebSocket handshake (Node only).
• auth.authToken — sent via set_auth_token message after the
  server hello, defaults to "unauthorized_user_token".
• locale option — sent via set_locale after auth.

Browser / dual runtime

• Dynamic import('ws') so browser bundlers drop the Node ws
  package from client builds.
• Automatic runtime detection: native WebSocket in browsers,
  ws in Node, fallback to native in Bun / Deno / Cloudflare Workers.
• happy-dom test environment for browser smoke tests.

Proxy support

• agent option accepted by tv(), propagated through to the ws
  package. Works with https-proxy-agent, socks-proxy-agent, or
  any http.Agent-compatible proxy client.

Documentation

• Rewritten README with quick start, feature list, and examples table.
• docs/getting-started.md — installation, concepts, troubleshooting.
• docs/api/ — full reference for Client, TvSymbol, Stream,
  Portfolio / Group, and types.
• docs/guides/ — streaming, candles, groups, reconnect, browser,
  proxy, auth.
• MIGRATION.md — complete 1.x → 2.0 migration guide.
• CONTRIBUTING.md — development workflow, .js extension rationale.

Examples

12 runnable demos in examples/:

1. 01-single-price.ts
2. 02-streaming.ts
3. 03-multi-symbol.ts
4. 04-groups.ts
5. 05-candles-history.ts
6. 06-candles-streaming.ts
7. 07-symbol-info.ts
8. 08-async-iterator.ts
9. 09-reconnect-resilience.ts
10. 10-browser.html
11. 11-proxy-node.ts
12. 12-auth-session.ts

Testing and tooling

• 227+ unit tests across 21 files in tests/unit/.
• Mock WebSocket server in tests/fixtures/ws-server.ts for
  integration-like tests without touching the network.
• Live e2e scaffolding gated by LIVE_E2E=1 environment variable.
• Vitest + @vitest/coverage-v8 with 85% statement threshold.
• ESLint 9 (flat config) + Prettier.
• tsup dual ESM + CJS build with .d.ts and .d.cts types.
• publint pre-publish validation.
• GitHub Actions CI (Node 20 & 22), nightly e2e, tag-triggered
  release workflow with npm provenance.

Changed

• Minimum Node version: 20 (was 14).
• Package is now ESM-first ("type": "module") with a CJS fallback.
• keywords in package.json trimmed to 10 honest entries from 12
  (removed tradingview-webhooks, tradingview-indicator,
  bitcoin, dogecoin, and de-duplicated stock-related keywords).
• Security: upgraded ws to ^8.18.0 (fixes
  GHSA-3h5v-q93c-6h6q).

Removed

• Legacy 1.x source code: src/Client.ts, src/Quote.ts,
  src/QuoteChannel.ts, src/TickerDetails.ts, src/WsProtocol.ts,
  src/adapters/*, demos/*. Replaced by the new architecture.

Fixed

• #4 —
  Unable to close WS connection. client.disconnect() now releases
  every resource and allows the Node process to exit.
• #5 —
  Unclear trade / minute-bar / daily-bar types. The
  QuoteFieldTypeMap now declares full TradeTick and BarTick
  interfaces with TypeScript checking.
• #6 —
  Mobile browser quotes. Browser detection now uses the native
  WebSocket when available and the ws package is dropped from
  browser bundles via dynamic import.
• #7 —
  Vue 3 WebSocket error. Same dynamic import fix.
• #9 —
  Proxy server. agent option now propagates through the full
  Client → SessionManager → Transport stack.