TypeScript Deferred Promise

deferred.ts

function deferPromise<T>(): {
	resolve: ( value?: ( PromiseLike<T> | T ) ) => void;
	reject: ( reason?: unknown ) => void;
	promise: Promise<T>;
} {
	let resolve: ( value?: T | PromiseLike<T> ) => void;
	let reject: ( reason?: unknown ) => void;

	// eslint-disable-next-line promise/param-names
	const promise: Promise<T> = new Promise( ( promiseResolve, promiseReject ) => {
		resolve = promiseResolve;
		reject = promiseReject;
	} );

	return { resolve: resolve!, reject: reject!, promise };
}