Function pify

test/SyncWaterfallHook.test.js:9–16

(fn)

const SyncWaterfallHookTest = require("../lib/SyncWaterfallHook");

function pify(fn) {
	return new Promise((resolve, reject) => {
		fn((err, result) => {
			if (err) reject(err);
			else resolve(result);
		});
	});
}

describe("SyncWaterfallHook", () => {
	it("should throw an error when hook has no argument", () => {