export interface IContext {
    running?: boolean;
}
/**
 * Wraps a function to ensure that it does not start running if the value of
 * `running` in the provided lock is truthy. This is relevant for functions that
 * use promises such as network requests and for mutually exclusive long-running
 * operations which should not run at the same time.
 *
 * If the function returns a promise,
 * the promise will be awaited before the context will be reset to allow any
 * function using the lock to run again.
 *
 * The function will simply ignore calls before it is ready to run
 * again, returning `undefined`.
 *
 * Pending tests. Please report bugs.
 *
 * @example
 *
 *
 * @param fn
 * @returns
 */
export declare function setContext<T extends any[], U>(fn: (...args: T) => U, context?: IContext): (...args: T) => U;