/**
 * TrackingLayer — the Tracking half of "Routing & Tracking" (spec, v0.6.7).
 * Wraps a single `IconLayer`: renders the CURRENT (or smoothly interpolating)
 * position of one tracked entity, with bearing-derived rotation.
 *
 * v1 scope: ONE tracked entity per layer — the LAST row in `data` is "the"
 * position. Fleet/multi-entity tracking on one layer is a documented
 * follow-on, not built here (mirrors this codebase's own "v1 supports one,
 * generalizing to many is a later tier" precedent — e.g. BIM model
 * federation's "multiple co-registered models... NOT implemented").
 *
 * Position data arrives through the ORDINARY `data`/`source` mechanism (the
 * design doc is explicit: a tracking feed is "a thin registerSource decoder
 * over existing machinery", not a new subscription abstraction) —
 * TrackingLayer itself knows nothing about where the data came from, same as
 * any other curated layer reading `data`.
 *
 * Interpolation between updates and camera-follow are driven EXTERNALLY by
 * `src/tracking-interpolation.ts` via the per-frame channel
 * (`RuntimeCore.patchAnimatedProps`) — never inside this class, matching how
 * RouteLayer never touches the camera itself either. When
 * `interpolatedPosition` is present (injected only, never authored) it
 * overrides the raw data-derived position; the un-interpolated fallback
 * keeps this layer fully functional — just not smooth — even before the
 * first interpolation frame lands (e.g. the very first fix, headless mode,
 * or `prefers-reduced-motion`).
 */
import { CompositeLayer } from "@deck.gl/core";
import type { Layer } from "@deck.gl/core";
export interface TrackingLayerProps {
    data?: readonly unknown[];
    getPosition?: (d: unknown, info: {
        index: number;
        data: readonly unknown[];
    }) => [number, number];
    bearingField?: string;
    color?: string;
    size?: number;
    /** Marker shape: "arrow" (default), "car", or "motorcycle" — all drawn nose-up and baked in `color`, so rotation and tinting work identically. Unknown values fall back to the arrow (validation warns). */
    icon?: string;
    /** Injected by src/tracking-interpolation.ts — never authored. */
    interpolatedPosition?: [number, number];
    interpolatedBearing?: number;
    [prop: string]: unknown;
}
export declare class TrackingLayer extends CompositeLayer<TrackingLayerProps> {
    static layerName: string;
    static defaultProps: {
        bearingField: string;
        color: string;
        size: number;
        icon: string;
    };
    renderLayers(): Layer[];
}