kestrel.markets/dist/frame/tape-geometry.d.ts

A typed, token-efficient language + runtime for agentic trading: agents author bounded plans, the runtime fires them at the tick. CLI + typed library + MCP server.

/**
 * # frame/tape-geometry — the ONE rotated-candlestick geometry both adapters draw (ADR-0052 §1)
 *
 * The tape is a candlestick rotated 90°: price → column position, time flows down. Its 40-column
 * geometry — the price→column projection, the `─` wick low→high, the `█` body open→close, the
 * zero-width-body block, the trailing trim — was materialized twice (the canonical pane in
 * {@link ./pane-catalog.ts renderTape} and the ARM's candlestick style in {@link ./render-arm.ts
 * armTape}). It now lives here once; each adapter keeps only its OWN header + row prefix (which
 * genuinely differ), and both draw the identical candle body from {@link candleLine}.
 *
 * PURE geometry: it derives LAYOUT from the data's own extremes (axis bounds = the input numbers'
 * min/max), never a value. Deterministic — no wall clock, no RNG (RUNTIME §0).
 */
import type { TapeRow } from "./types.ts";
/** Column count for the price axis. A layout constant (not a value); wide enough to *see*
 * drift/range-walls as block migration, narrow enough to stay token-cheap. */
export declare const TAPE_WIDTH = 40;
/** The tape's price axis bounds — the data's OWN extremes: `lo` = min over every row's low/open/close,
 * `hi` = max over every row's high/open/close. The axis is derived, never invented. PURE. */
export declare function tapeBounds(rows: readonly TapeRow[]): {
    readonly lo: number;
    readonly hi: number;
};
/**
 * One row's rotated candle over `[lo, hi]`: a `─` wick spanning low→high and a `█` body spanning
 * open→close, positioned by price → column. A flat window (`span <= 0`) collapses to a single block
 * column; a zero-width body still shows one block. Trailing spaces are trimmed (the leading indent —
 * the low column — is kept: it encodes price level). Returns ONLY the candle cells; the caller owns
 * the row prefix (clock/indent) and the header. PURE.
 */
export declare function candleLine(row: TapeRow, lo: number, hi: number, width?: number): string;
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