Many eslint fixes.

Author: davidlehn

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Fixed
 - Handle compactArrays option in `@graph` compaction.
+- Many eslint fixes.
 
 ## 1.0.1 - 2018-03-01
 

lib/Rdfa.js

@@ -57,7 +57,7 @@ module.exports = class Rdfa {
         continue;
       }
       const predicates = triples.predicates;
-      for(let predicate in predicates) {
+      for(const predicate in predicates) {
         // iterate over objects
         const objects = predicates[predicate].objects;
         for(let oi = 0; oi < objects.length; ++oi) {

lib/RequestQueue.js

@@ -17,7 +17,7 @@ module.exports = class RequestQueue {
   wrapLoader(loader) {
     const self = this;
     self._loader = normalizeDocumentLoader(loader);
-    return function(url) {
+    return function(/* url */) {
       return self.add.apply(self, arguments);
     };
   }