chore: tidy things up and fix typos

scripts/build-parser-json.js

@@ -1,4 +1,5 @@
 'use strict';
+
 const glob = require('glob');
 const fs = require('fs');
 

scripts/globals.js

@@ -1,6 +1,7 @@
 'use strict';
+
 global.XMLHttpRequest = class extends require('xhr2') {
-  // This is for browser-like environments not nessacarily a browser
-  // So disabling this is okay, sort of
+  // This is for browser-like environments not necessarily a browser.
+  // So disabling this is okay, sort of.
   _restrictedHeaders = {};
 };