import type { MakePrimitive } from "@alanscodelog/utils";
import { Base } from "./Base.js";
/**
 * Creates a control variable.
 *
 * ```ts
 * const controlVar = new ControlVar(Units.rgb, { r: 0, g: 0, b: 0 })
 * ```
 *
 * The type of the control is taken from the type of the unit formatting function.
 *
 * All control variables are objects internally, but for ease of use, control variables can also be defined like:
 *
 * ```ts
 * const controlVar = new ControlVar(Units.num, 0)
 * // same as
 * const controlVar = new ControlVar(Units.num, { _: 0 })
 * ```
 *
 * To change their value, the `set` method must be used to ensure that any other variables depending on it are updated.
 */
export declare class ControlVar<TVal extends Record<string, any> | string | number | boolean = Record<string, any> | string | number | boolean, TUnit extends TVal extends Record<string, any> ? TVal : Record<"_", MakePrimitive<TVal>> = TVal extends Record<string, any> ? TVal : Record<"_", MakePrimitive<TVal>>> extends Base {
    unit: (value: TUnit) => string;
    value: TUnit;
    css: string;
    constructor(unit: ControlVar<TVal, TUnit>["unit"], value: TVal);
    set(value: MakePrimitive<TVal> | TUnit): void;
    protected notify(): void;
    protected recompute(): void;
}
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