export type NonConcurrentStart = {
    done: () => void;
    /**
     * @deprecated Will be removed in the no alpha version
     */
    ready: () => void;
};
/**
 * A class to help make async code non concurrent.
 * This makes sure that only one async function is running at a time.
 *
 * Example:
 * ```ts
 * const nonConcurrent = new NonConcurrent();
 *
 * async function foo() {
 * 	const ready = await nonConcurrent.start();
 * 	console.log('point 1');
 * 	// do something
 * 	await timeout(100);
 * 	console.log('point 2');
 * 	ready.done();
 * }
 *
 * async function bar() {
 * 	const ready = await nonConcurrent.start();
 * 	console.log('point 3');
 * 	// do something
 * 	ready.done();
 * }
 *
 * await Promise.all([foo(), bar()]);
 * ```
 */
export default class NonConcurrent {
    private listeners;
    private running;
    /**
     * Creates a new NonConcurrent
     */
    constructor();
    /**
     * Waits until any other non-concurrent requests is done then waits until you call done
     *
     * returns an object where you need to call done
     */
    start(): Promise<NonConcurrentStart>;
}
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