import type { TypeMatcher } from './matcher';
/**
 * Matches anything and stores the received value.
 *
 * This should not be needed for most cases, but can be useful if you need
 * access to a complex argument outside the expectation e.g. to test a
 * callback.
 *
 * @param name If given, this name will be printed in error messages.
 *
 * @example
 * const fn = mock<(cb: (value: number) => number) => void>();
 * const matcher = It.willCapture();
 * when(() => fn(matcher)).thenReturn();
 *
 * fn(x => x + 1);
 * matcher.value?.(3) === 4
 */
export declare const willCapture: <T = unknown>(name?: string) => TypeMatcher<T> & {
    value: T | undefined;
};