refactor: less.render already returns promise

rename callback to next to match other controllers

src/controllers/accounts/posts.js

@@ -140,7 +140,7 @@ postsController.getTopics = async function (req, res, next) {
 	await getPostsFromUserSet('account/topics', req, res, next);
 };
 
-async function getPostsFromUserSet(template, req, res, callback) {
+async function getPostsFromUserSet(template, req, res, next) {
 	const data = templateToData[template];
 	const page = Math.max(1, parseInt(req.query.page, 10) || 1);
 
@@ -150,7 +150,7 @@ async function getPostsFromUserSet(template, req, res, callback) {
 	]);
 
 	if (!userData) {
-		return callback();
+		return next();
 	}
 	const itemsPerPage = data.type === 'topics' ? settings.topicsPerPage : settings.postsPerPage;
 	const start = (page - 1) * itemsPerPage;

src/controllers/accounts/settings.js

@@ -141,17 +141,11 @@ const doUnsubscribe = async (payload) => {
 };
 
 settingsController.unsubscribe = async (req, res) => {
-	let payload;
 	try {
-		payload = await jwtVerifyAsync(req.params.token);
+		const payload = await jwtVerifyAsync(req.params.token);
 		if (!payload || !unsubscribable.includes(payload.template)) {
 			return;
 		}
-	} catch (err) {
-		throw new Error(err);
-	}
-
-	try {
 		await doUnsubscribe(payload);
 		res.render('unsubscribe', {
 			payload: payload,

src/controllers/topics.js

@@ -20,14 +20,14 @@ const url = nconf.get('url');
 const relative_path = nconf.get('relative_path');
 const upload_url = nconf.get('upload_url');
 
-topicsController.get = async function getTopic(req, res, callback) {
+topicsController.get = async function getTopic(req, res, next) {
 	const tid = req.params.topic_id;
 
 	if (
 		(req.params.post_index && !utils.isNumber(req.params.post_index) && req.params.post_index !== 'unread') ||
 		!utils.isNumber(tid)
 	) {
-		return callback();
+		return next();
 	}
 	let postIndex = parseInt(req.params.post_index, 10) || 1;
 	const [
@@ -51,7 +51,7 @@ topicsController.get = async function getTopic(req, res, callback) {
 		invalidPagination ||
 		(topicData.scheduled && !userPrivileges.view_scheduled)
 	) {
-		return callback();
+		return next();
 	}
 
 	if (!userPrivileges['topics:read'] || (!topicData.scheduled && topicData.deleted && !userPrivileges.view_deleted)) {
@@ -334,12 +334,12 @@ topicsController.teaser = async function (req, res, next) {
 	res.json(postData[0]);
 };
 
-topicsController.pagination = async function (req, res, callback) {
+topicsController.pagination = async function (req, res, next) {
 	const tid = req.params.topic_id;
 	const currentPage = parseInt(req.query.page, 10) || 1;
 
 	if (!utils.isNumber(tid)) {
-		return callback();
+		return next();
 	}
 
 	const [userPrivileges, settings, topic] = await Promise.all([
@@ -349,7 +349,7 @@ topicsController.pagination = async function (req, res, callback) {
 	]);
 
 	if (!topic) {
-		return callback();
+		return next();
 	}
 
 	if (!userPrivileges.read || !privileges.topics.canViewDeletedScheduled(topic, userPrivileges)) {

src/meta/configs.js

@@ -4,7 +4,6 @@
 const nconf = require('nconf');
 const path = require('path');
 const winston = require('winston');
-const util = require('util');
 
 const db = require('../database');
 const pubsub = require('../pubsub');
@@ -237,22 +236,15 @@ function ensureInteger(data, field, min) {
 	}
 }
 
-function lessRender(string, callback) {
-	const less = require('less');
-	less.render(string, {
-		compress: true,
-		javascriptEnabled: true,
-	}, callback);
-}
-
-const lessRenderAsync = util.promisify(lessRender);
-
 async function saveRenderedCss(data) {
 	if (!data.customCSS) {
 		return;
 	}
-
-	const lessObject = await lessRenderAsync(data.customCSS);
+	const less = require('less');
+	const lessObject = await less.render(data.customCSS, {
+		compress: true,
+		javascriptEnabled: true,
+	});
 	data.renderedCustomCSS = lessObject.css;
 }