import { type BrowserPermissionState } from '@packages/internal/common/browser';
import { BaseSensor } from '../base-sensor';
/**
 * Configuration options for the device motion sensor.
 */
export interface MotionSensorConfig {
    /** Step detection threshold (m/s²). Lower = more sensitive. */
    stepDetectionThreshold: number;
    /** Step length in meters. */
    stepLength: number;
    /** Stride adaptation factor (0-1). Higher = vary step length with cadence. */
    strideAdaptation: number;
    /** Motion detection threshold (m/s²). Lower = more responsive. */
    motionThreshold: number;
    /** Enable PDR displacement calculation. */
    pdrEnabled: boolean;
}
/**
 * Sensor that provides device motion data (acceleration).
 * Useful for detecting if the user is stationary or moving,
 * which can affect confidence in position estimates.
 *
 * PDR (Pedestrian Dead Reckoning) logic is implemented using pure functions
 * from `./pdr.ts` for testability. The sensor manages state and coordinates
 * the pure functions.
 */
export declare class DeviceMotionSensor extends BaseSensor {
    #private;
    readonly id = "devicemotion";
    get requiresPermission(): boolean;
    protected start: () => Promise<void>;
    protected stop: () => void;
    checkPermission: () => Promise<BrowserPermissionState>;
    requestPermission: () => Promise<BrowserPermissionState>;
    /**
     * Whether the device is currently detected as moving.
     */
    get isMoving(): boolean;
    /**
     * Set current heading for PDR displacement calculation.
     * Called by SensorRegistry when heading updates arrive from deviceorientation.
     * Applies exponential smoothing to prevent zigzag paths from heading jitter.
     * @param heading Heading in degrees (0-360)
     */
    setHeading(heading: number): void;
    /**
     * Configure the sensor parameters at runtime.
     * @param config Partial configuration to apply
     */
    configure(config: Partial<MotionSensorConfig>): void;
    /**
     * Get current configuration values.
     */
    getConfig(): MotionSensorConfig;
}