feat: allow sync function (#9379)

* feat: allow sync function

* fix: remove async

src/plugins/hooks.js

@@ -1,6 +1,5 @@
 'use strict';
 
-const async = require('async');
 const util = require('util');
 const winston = require('winston');
 const plugins = require('.');
@@ -116,37 +115,40 @@ async function fireFilterHook(hook, hookList, params) {
 	if (!Array.isArray(hookList) || !hookList.length) {
 		return params;
 	}
-	return await async.reduce(hookList, params, (params, hookObj, next) => {
+
+	async function fireMethod(hookObj, params) {
 		if (typeof hookObj.method !== 'function') {
 			if (global.env === 'development') {
 				winston.warn(`[plugins] Expected method for hook '${hook}' in plugin '${hookObj.id}' not found, skipping.`);
 			}
-			return next(null, params);
+			return params;
 		}
-		const returned = hookObj.method(params, next);
-		if (utils.isPromise(returned)) {
-			returned.then(
-				payload => setImmediate(next, null, payload),
-				err => setImmediate(next, err)
-			);
+
+		if (hookObj.method.constructor && hookObj.method.constructor.name === 'AsyncFunction') {
+			return await hookObj.method(params);
 		}
-	});
-	// breaks plugins that use a non-async function ie emoji-one parse.raw
-	// for (const hookObj of hookList) {
-	// 	if (typeof hookObj.method !== 'function') {
-	// 		if (global.env === 'development') {
-	// 			winston.warn(`[plugins] Expected method for hook '${hook}' in plugin '${hookObj.id}' not found, skipping.`);
-	// 		}
-	// 	} else {
-	// 		let hookFn = hookObj.method;
-	// 		if (hookFn.constructor && hookFn.constructor.name !== 'AsyncFunction') {
-	// 			hookFn = util.promisify(hookFn);
-	// 		}
-	// 		// eslint-disable-next-line
-	// 		params = await hookFn(params);
-	// 	}
-	// }
-	// return params;
+		return new Promise((resolve, reject) => {
+			const returned = hookObj.method(params, (err, result) => {
+				if (err) reject(err); else resolve(result);
+			});
+
+			if (utils.isPromise(returned)) {
+				returned.then(
+					payload => resolve(payload),
+					err => reject(err)
+				);
+				return;
+			}
+			if (returned) {
+				resolve(returned);
+			}
+		});
+	}
+	for (const hookObj of hookList) {
+		// eslint-disable-next-line
+		params = await fireMethod(hookObj, params);
+	}
+	return params;
 }
 
 async function fireActionHook(hook, hookList, params) {

test/plugins.js

@@ -47,7 +47,7 @@ describe('Plugins', () => {
 		});
 	});
 
-	it('should register and fire a filter hook having 2 methods, one returning a promise and the other calling the callback', (done) => {
+	it('should register and fire a filter hook having 3 methods, one returning a promise, one calling the callback and one just returning', async () => {
 		function method1(data, callback) {
 			data.foo += 1;
 			callback(null, data);
@@ -58,15 +58,17 @@ describe('Plugins', () => {
 				resolve(data);
 			});
 		}
+		function method3(data) {
+			data.foo += 1;
+			return data;
+		}
 
 		plugins.hooks.register('test-plugin', { hook: 'filter:test.hook2', method: method1 });
 		plugins.hooks.register('test-plugin', { hook: 'filter:test.hook2', method: method2 });
+		plugins.hooks.register('test-plugin', { hook: 'filter:test.hook2', method: method3 });
 
-		plugins.hooks.fire('filter:test.hook2', { foo: 1 }, (err, data) => {
-			assert.ifError(err);
-			assert.equal(data.foo, 7);
-			done();
-		});
+		const data = await plugins.hooks.fire('filter:test.hook2', { foo: 1 });
+		assert.strictEqual(data.foo, 8);
 	});
 
 	it('should register and fire a filter hook that returns a promise that gets rejected', (done) => {