chore: tiny perf tweak

lukeed · Mar 24, 2020 · 9863715 · 9863715
1 parent 5437ea5
commit 9863715
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -36,13 +36,15 @@ module.exports = function (args, opts) {
 		}
 	}
 
-	opts.boolean.forEach(key => {
-		opts.boolean = opts.boolean.concat(opts.alias[key] = opts.alias[key] || []);
-	});
+	for (i=opts.boolean.length; i-- > 0;) {
+		arr = opts.alias[opts.boolean[i]] || [];
+		for (j=arr.length; j-- > 0;) opts.boolean.push(arr[j]);
+	}
 
-	opts.string.forEach(key => {
-		opts.string = opts.string.concat(opts.alias[key] = opts.alias[key] || []);
-	});
+	for (i=opts.string.length; i-- > 0;) {
+		arr = opts.alias[opts.string[i]] || [];
+		for (j=arr.length; j-- > 0;) opts.string.push(arr[j]);
+	}
 
 	if (defaults) {
 		for (k in opts.default) {