/**
 * Does nothing when called.
 */
export declare const noop: (...args: Array<any>) => any;
/**
 * Async function that returns a resolved promise.
 */
export declare const noop_async: (...args: Array<any>) => Promise<any>;
/**
 * A singleton resolved `Promise`.
 */
export declare const resolved: Promise<void>;
/**
 * Returns the first arg.
 */
export declare const identity: <T>(t: T) => T;
/**
 * Represents a value wrapped in a function.
 * Useful for lazy values and bridging reactive boundaries in Svelte.
 */
export type Thunk<T> = () => T;
/**
 * Returns the result of calling `value` if it's a function,
 * otherwise it's like the `identity` function and passes it through.
 */
export declare const unthunk: <T>(value: T | Thunk<T>) => T;
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