Array had the same javascript escaping string issue.

Filed a bug at https://github.com/linkedin/dustjs/issues/802 .

src/bin.rs

@@ -195,6 +195,9 @@ fn apply_filter(
         (serde_json::Value::Number(number), Filter::JavascriptStringEncode) => {
             Ok(serde_json::Value::Number(number.clone()))
         }
+        (serde_json::Value::Array(arr), Filter::JavascriptStringEncode) => {
+            Ok(serde_json::Value::Array(arr.clone()))
+        }
         (serde_json::Value::Object(obj), Filter::JavascriptStringEncode) => {
             Ok(serde_json::Value::Object(obj.clone()))
         }