Object assign was not merging these two arrays correctly.

Author: paulirish

merge-protocol-files.js

@@ -14,8 +14,12 @@ const protocol1 = JSON.parse(protocol1Text);
 const protocol2Text = fs.readFileSync(args[1]);
 const protocol2 = JSON.parse(protocol2Text);
 
+var mergedDomains = [];
+protocol1.domains.forEach(domain => mergedDomains.push(domain))
+protocol2.domains.forEach(domain => mergedDomains.push(domain))
+
 const protocolMerged = {
-  domains: Object.assign(protocol1.domains, protocol2.domains)
+  domains: mergedDomains
 };
 
 console.log(JSON.stringify(protocolMerged, null, '    '));