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feat(sdk): support the trailingStop exchange action - #175
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Hyperliquid's dedicated trailing stop action places a native trailing stop
with a fixed retracement distance — { pct } as a percent string or { px } as
an absolute price — plus a nullable activationPx. Its success response
carries data.oid directly instead of an order-style statuses array, so the
error parser gains a fourth shape for data-level { error } responses, at
runtime (isErrorResponse/getErrorMessage) and at the type level
(ExcludeErrorResponse).
Wire it up end to end: trailingStop() and buildTrailingStop() under
api/exchange, an actions/trailingStop entry point, ExchangeClient.trailingStop
with coin-symbol resolution (CoinTrailingStopParameters), package.json
exports, offline + conformance tests, and the clients.md symbol-orders
inventory and example.
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Summary
Adds SDK support for Hyperliquid's native trailing stop exchange action:
trailingStop()+buildTrailingStop()canonical builder underapi/exchange,actions/trailingStopentry point,ExchangeClient.trailingStopwithcoin-symbol resolution, package.json exports — following the established per-method pattern (twapOrder).data.oiddirectly rather than an order-stylestatusesarray, so the parser gains a fourth error shape for data-level{ error }responses — runtime (isErrorResponse/getErrorMessage) and type level (ExcludeErrorResponsenarrowsdatato{ oid: number }). Audited all existing response types: none carryerrorunderdata, so no false positives.activationPx: null, validation rejections,data.oidsuccess,data.errorrejection), client/coin-resolution/error-shape/conformance entries.clients.mdsymbol-orders inventory + example.Validation
bun run check— format, lint, docs content, tsc (TS5), TS7 native, JSDoc/export/import sync gates: all passbun run test:offline— 2087 pass, 0 fail (244 live tests skipped by design)bun run build— dist builds; published consumer contract checks passNote: the live test block follows the repo pattern but hasn't run against testnet yet (needs a funded key) — undocumented server-side retracement bounds could surface on its first live run.