import type { ColorScale } from "../types";
export declare const MEMO_LIMIT = 1024;
export declare const memoize: <A extends unknown[], R>(fn: (...args: A) => R, keyOf: (...args: A) => string, limit?: number) => ((...args: A) => R);
export declare const scaleKey: (s: ColorScale) => string;
export declare const memoCaches: () => ReadonlyArray<{
    size: number;
    limit: number;
}>;
export declare const clearMemoCaches: () => void;