tidy

src/keys.js

@@ -38,8 +38,8 @@ let recurse = obj => {
 	}
 }
 
-export default obj => {
+export default args => {
 	array = []
-	recurse(obj)
+	args.forEach(recurse)
 	return array
 }

src/sortSymbols.js

@@ -1,4 +1,3 @@
 let lookup = new Map()
-let get = symbol =>
-	lookup.has(symbol) ? lookup.get(symbol) : (lookup.set(symbol, lookup.size), lookup.size - 1)
+let get = symbol => lookup.get(symbol) || (lookup.set(symbol, lookup.size + 1), lookup.size)
 export default symbols => symbols.sort((a, b) => get(a) - get(b))