diff --git a/meta.js b/meta.js
index 7c47536..63f0468 100644
--- a/meta.js
+++ b/meta.js
@@ -1,67 +1,74 @@
 // This is a copy of https://github.com/pd4d10/userscript-meta/blob/master/index.js
-'use strict'
+"use strict";
 
 function isUndefined(val) {
-  return typeof val === 'undefined'
+  return typeof val === "undefined";
 }
 
 function isObject(val) {
-  return typeof val === 'object' && val !== null
+  return typeof val === "object" && val !== null;
 }
 
 // Parse metadata to an object
 function parse(meta) {
-  if (typeof meta !== 'string') {
-    throw new Error('`Parse`\'s first argument should be a string')
+  if (typeof meta !== "string") {
+    throw new Error("`Parse`'s first argument should be a string");
   }
 
-  return meta.split(/[\r\n]/)
-    .filter(function (line) { // remove blank line
-      return /\S+/.test(line) &&
-        line.indexOf('==UserScript==') === -1 &&
-        line.indexOf('==/UserScript==') === -1
+  return meta
+    .split(/[\r\n]/)
+    .filter(function (line) {
+      // remove blank line
+      return (
+        /\S+/.test(line) &&
+        line.indexOf("==UserScript==") === -1 &&
+        line.indexOf("==/UserScript==") === -1
+      );
     })
     .reduce(function (obj, line) {
-      var arr = line.trim().replace(/^\/\//, '').trim().split(/\s+/)
-      var key = arr[0].slice(1)
-      var value = arr.slice(1).join(' ')
+      var arr = line.trim().replace(/^\/\//, "").trim().split(/\s+/);
+      var key = arr[0].slice(1);
+      var value = arr.slice(1).join(" ");
 
       if (isUndefined(obj[key])) {
-        obj[key] = value
+        obj[key] = value;
       } else if (Array.isArray(obj[key])) {
-        obj[key].push(value)
+        obj[key].push(value);
       } else {
-        obj[key] = [obj[key], value]
+        obj[key] = [obj[key], value];
       }
 
-      return obj
-    }, {})
+      return obj;
+    }, {});
 }
 
 function getLine(key, value) {
   // For field which has multiple values, like `match`
   if (Array.isArray(value)) {
-    return value.map(function (value) {
-      return getLine(key, value)
-    }).join('')
+    return value
+      .map(function (value) {
+        return getLine(key, value);
+      })
+      .join("");
   }
 
-  return '// @' + key + ' ' + value + '\n'
+  return "// @" + key + " " + value + "\n";
 }
 
 // Stringify metadata from an object
 function stringify(obj) {
   if (!isObject(obj)) {
-    throw new Error('`Stringify`\'s first argument should be an object')
+    throw new Error("`Stringify`'s first argument should be an object");
   }
 
   var meta = Object.keys(obj)
     .map(function (key) {
-      return getLine(key, obj[key])
-    }).join('')
+      return getLine(key, obj[key]);
+    })
+    .join("");
 
-  return '// ==UserScript==\n' + meta + '// ==/UserScript==\n'
+  return "// ==UserScript==\n" + meta + "// ==/UserScript==\n";
 }
 
-exports.parse = parse
-exports.stringify = stringify
\ No newline at end of file
+exports.parse = parse;
+exports.stringify = stringify;