diff --git a/libraries/settings/Settings.js b/libraries/settings/Settings.js
old mode 100755
new mode 100644
index 7b32d24d27..106de03f13
--- a/libraries/settings/Settings.js
+++ b/libraries/settings/Settings.js
@@ -1,50 +1,67 @@
-fs = require "fs"
-path = require "path"
-env = (process.env.NODE_ENV or "development").toLowerCase()
+/*
+ * decaffeinate suggestions:
+ * DS101: Remove unnecessary use of Array.from
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let defaults, possibleConfigFiles, settingsExist;
+const fs = require("fs");
+const path = require("path");
+const env = (process.env.NODE_ENV || "development").toLowerCase();
 
-merge = (settings, defaults) ->
-	for key, value of settings
-		if typeof(value) == "object" and value not instanceof Array
-			defaults[key] = merge(settings[key], defaults[key] or {})
-		else
-			defaults[key] = value
-	return defaults
+var merge = function(settings, defaults) {
+	for (let key in settings) {
+		const value = settings[key];
+		if ((typeof(value) === "object") && !(value instanceof Array)) {
+			defaults[key] = merge(settings[key], defaults[key] || {});
+		} else {
+			defaults[key] = value;
+		}
+	}
+	return defaults;
+};
 
-defaultSettingsPath = path.normalize(__dirname + "/../../config/settings.defaults")
+const defaultSettingsPath = path.normalize(__dirname + "/../../config/settings.defaults");
 
-if fs.existsSync("#{defaultSettingsPath}.js")
-	console.log "Using default settings from #{defaultSettingsPath}.js"
-	defaults = require("#{defaultSettingsPath}.js")
-	settingsExist = true
-else if fs.existsSync("#{defaultSettingsPath}.coffee")
-	console.warn "CoffeeScript settings file #{defaultSettingsPath}.coffee is deprecated, please convert to JavaScript"
-	console.log "Using default settings from #{defaultSettingsPath}.coffee"
-	defaults = require("#{defaultSettingsPath}.coffee")
-	settingsExist = true
-else
-	defaults = {}
-	settingsExist = false
+if (fs.existsSync(`${defaultSettingsPath}.js`)) {
+	console.log(`Using default settings from ${defaultSettingsPath}.js`);
+	defaults = require(`${defaultSettingsPath}.js`);
+	settingsExist = true;
+} else if (fs.existsSync(`${defaultSettingsPath}.coffee`)) {
+	console.warn(`CoffeeScript settings file ${defaultSettingsPath}.coffee is deprecated, please convert to JavaScript`);
+	console.log(`Using default settings from ${defaultSettingsPath}.coffee`);
+	defaults = require(`${defaultSettingsPath}.coffee`);
+	settingsExist = true;
+} else {
+	defaults = {};
+	settingsExist = false;
+}
 
-if process.env.SHARELATEX_CONFIG?
-	possibleConfigFiles = [process.env.SHARELATEX_CONFIG]
-else
+if (process.env.SHARELATEX_CONFIG != null) {
+	possibleConfigFiles = [process.env.SHARELATEX_CONFIG];
+} else {
 	possibleConfigFiles = [
-		process.cwd() + "/config/settings.#{env}.js"
-		path.normalize(__dirname + "/../../config/settings.#{env}.js")
-		process.cwd() + "/config/settings.#{env}.coffee"
-		path.normalize(__dirname + "/../../config/settings.#{env}.coffee")
-	]
+		process.cwd() + `/config/settings.${env}.js`,
+		path.normalize(__dirname + `/../../config/settings.${env}.js`),
+		process.cwd() + `/config/settings.${env}.coffee`,
+		path.normalize(__dirname + `/../../config/settings.${env}.coffee`)
+	];
+}
 
-for file in possibleConfigFiles
-	if fs.existsSync(file)
-		if file.endsWith('.coffee')
-			console.warn "CoffeeScript settings file #{file} is deprecated, please convert to JavaScript"
-		console.log "Using settings from " + file
-		module.exports = merge(require(file), defaults)
-		settingsExist = true
-		break
+for (let file of Array.from(possibleConfigFiles)) {
+	if (fs.existsSync(file)) {
+		if (file.endsWith('.coffee')) {
+			console.warn(`CoffeeScript settings file ${file} is deprecated, please convert to JavaScript`);
+		}
+		console.log("Using settings from " + file);
+		module.exports = merge(require(file), defaults);
+		settingsExist = true;
+		break;
+	}
+}
 
-if !settingsExist
-	console.warn "No settings or defaults found. I'm flying blind."
+if (!settingsExist) {
+	console.warn("No settings or defaults found. I'm flying blind.");
+}
 
-module.exports = defaults
+module.exports = defaults;