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@liqpro/liq-prices

v0.68.0

Published

Поток цен биржи для браузера: `LiqPrices` держит одну подписку на SSE шлюза (`/sse?channels=price:<marketId>,…`), переоткрывает её с backoff по ошибке или тишине и отдаёт троттлированные `prices_updated`. Стартовое значение — `GET /markets/:id/price`.

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liqcx_adminliqcx_admin

Keywords

Readme

@liq/prices

Поток цен биржи для браузера: LiqPrices держит одну подписку на SSE шлюза (/sse?channels=price:<marketId>,…), переоткрывает её с backoff по ошибке или тишине и отдаёт троттлированные prices_updated. Стартовое значение — GET /markets/:id/price.

Цены приходят от шлюза, а не от вендора оракула: биржа читает push-фиды RedStone с цепи (PriceSeederService) и вещает каждое показание в price:<marketId> — браузер видит ровно то число, по которому торгует matching engine (ADR-0064 в monorepo). Hermes и id Pyth ушли из пакета в 0.51.0.

Public API

  • LiqPrices — класс: start/stop/rebind/dispose, events, currentPrices, marketIds.
  • gatewayFeed({ gatewayUrl, EventSource?, fetch? }) — адаптер шва GatewayFeed; EventSource инжектируется, потому что ни у Bun, ни у Node (без --experimental-eventsource) глобального нет (браузер отдаёт свой).
  • DEFAULT_TIMINGS, LiqPricesTimings — троттл, порог тишины, backoff.
  • ResourceRegistry, TypedEventEmitter, Disposable — lifecycle.

Ключи карты цен — FuturesMarketAsset (LIVE_MARKETS из @liq/core); publishTimes — секунда записи показания сеятелем × 1000. Поле type: 'off_chain' в PriceUpdateEvent сохранено ради потребителей.