Expose existing qp serialization util as a helper

ui/app/helpers/qp-deserialize.js

@@ -0,0 +1,16 @@
+import { helper } from '@ember/component/helper';
+import { deserialize } from 'nomad-ui/utils/qp-serialize';
+
+/**
+ * Query Param Serialize
+ *
+ * Usage: {{qp-deserialize string}}
+ *
+ * Turns a serialized query param value string back into
+ * an array of values.
+ */
+export function qpDeserialize([str]) {
+  return deserialize(str);
+}
+
+export default helper(qpDeserialize);

ui/app/helpers/qp-serialize.js

@@ -0,0 +1,16 @@
+import { helper } from '@ember/component/helper';
+import { serialize } from 'nomad-ui/utils/qp-serialize';
+
+/**
+ * Query Param Serialize
+ *
+ * Usage: {{qp-serialize array}}
+ *
+ * Turns an array of values into a safe url encoded query param
+ * value. This serialization is used throughout the app for facets.
+ */
+export function qpSerialize([values]) {
+  return serialize(values);
+}
+
+export default helper(qpSerialize);