import { ParamDef } from '@pylinka/graph';

/**
 * Knob store implementing the KnobBus contract (REQUIREMENTS.md §11.5).
 * Holds the current vec4 value per named knob; systems pull these into their
 * value table each frame. `set`/`get` are O(1) and allocation-free once a knob
 * is registered (registration happens at construction from the ParamDefs, or
 * lazily on first set of an unknown name — a create-path allocation).
 */

interface KnobBus {
    set(name: string, x: number, y?: number, z?: number, w?: number): void;
    get(name: string): number;
}
declare class KnobStore implements KnobBus {
    private readonly values;
    constructor(params?: ParamDef[]);
    set(name: string, x: number, y?: number, z?: number, w?: number): void;
    get(name: string): number;
    /** Read all four components (used by the uniform flush). */
    vec4(name: string, out: Float32Array, offset: number): void;
    has(name: string): boolean;
}

export { KnobStore as K, type KnobBus as a };