import type { Getter } from './types.js';
export declare const noop: () => void;
export declare function toArray<T>(v: T): T extends Array<unknown> ? T : T[];
/** If function, return function value. Else, return value. */
export declare function normalizeValue<T>(v: T | Getter<T>): T;
/** `true` if the value is not `null` nor `undefined`. `false` otherwise. */
export declare function notNullish<T>(v: T | null | undefined): v is T;
export declare function asyncEffectRoot(cb: () => Promise<void>): () => Promise<void>;