Handle potential error when converting res to JSON

lib/github.js

@@ -12,22 +12,23 @@ import {error} from './error'
 
 const exists = async repoPath => {
   const apiURL = `https://api.github.com/repos/${repoPath}`
+
   let request
+  let response
 
   try {
     request = await fetch(apiURL)
+    response = await request.json()
   } catch (err) {
     error(`Not able to check if repo exists - ${err.message}`)
     return false
   }
 
-  const res = await request.json()
-
-  if (!res.name) {
+  if (!response.name) {
     return false
   }
 
-  return res
+  return response
 }
 
 const downloadRepo = async repoPath => {