Method isPromise

packages/webpack-cli/src/webpack-cli.ts:576–578

(value: Promise<T>)

  }

  isPromise<T>(value: Promise<T>): value is Promise<T> {
    return typeof (value as unknown as Promise<T>).then === "function";
  }

  isFunction(value: unknown): value is CallableFunction {
    return typeof value === "function";