/*!
 * Copyright (c) Microsoft Corporation and contributors. All rights reserved.
 * Licensed under the MIT License.
 */

import { IDisposable } from "@fluidframework/common-definitions";

/**
 * Returns a wrapper around the provided function, which will only invoke the inner function if the provided
 * {@link @fluidframework/common-definitions#IDisposable | disposable} object has not yet been disposed.
 *
 * @throws Will throw an error if the item has already been disposed.
 *
 * @deprecated This function has no replacement.
 *
 * @privateremarks
 * This function is used in the container-loader package, so the implementation was moved there but it is no longer
 * exported.
 * @internal
 */
export function doIfNotDisposed<T>(
	disposable: IDisposable,
	f: (...args: any[]) => T,
): (...args: any[]) => T {
	return (...args: any[]): T => {
		if (disposable.disposed) {
			throw new Error("Already disposed");
		} else {
			return f(...args);
		}
	};
}