/**
 * Generates a short random ID for hook registration and instance identification.
 * Format: prefix + 4 hex chars, e.g. "hook_a3f9", "bcjs_1f2e"
 */
export declare function generateId(prefix?: string): string;
/**
 * Clamps a value between min and max (inclusive).
 */
export declare function clamp(value: number, min: number, max: number): number;
/**
 * Linear interpolation between a and b at ratio t.
 */
export declare function lerp(a: number, b: number, t: number): number;
/**
 * Maps a value from [inputMin, inputMax] to [outputMin, outputMax].
 */
export declare function mapRange(value: number, inputMin: number, inputMax: number, outputMin: number, outputMax: number): number;
/**
 * Checks if OffscreenCanvas is available in this environment.
 */
export declare function supportsOffscreenCanvas(): boolean;