Merge pull request #3718 from codyrancher/extractUniqueStrings

Putting extractUniqueStrings util back in

lib/shared/addon/utils/util.js

@@ -556,6 +556,15 @@ export function parseCamelcase(str = '') {
   return ucFirst(str).replace(/([A-Z]+)*([A-Z][a-z])/g, '$1 $2')
 }
 
+export function extractUniqueStrings(strings) {
+  const index = strings.reduce((agg, s) => ({
+    ...agg,
+    [s]: true
+  }), {});
+
+  return Object.keys(index);
+}
+
 var Util = {
   absoluteUrl,
   addAuthorization,
@@ -601,6 +610,7 @@ var Util = {
   validateEndpoint,
   requiredError,
   parseCamelcase,
+  extractUniqueStrings
 };
 
 window.Util = Util;