fixes #61

Author: theluk

src/rulesRunner.js

@@ -35,10 +35,10 @@ export default function rulesRunner(
   schema,
   uiSchema,
   rules,
-  Engine,
+  engine,
   extraActions
 ) {
-  let engine = new Engine([], schema);
+  engine = typeof engine === "function" ? new engine([], schema) : engine;
   normRules(rules).forEach(rule => engine.addRule(rule));
 
   return formData => {

test/issues/61.test.js

@@ -0,0 +1,21 @@
+import rulesRunner from "../../src/rulesRunner";
+import Engine from "json-rules-engine-simplified";
+
+test("rulesRunner with own Engine instantiation", () => {
+  let rules = [
+    {
+      conditions: { name: { not: "empty" } },
+      event: "foo",
+    },
+  ];
+
+  rulesRunner(
+    // schema
+    { properties: { name: { type: "string" } } },
+    // ui
+    {},
+    // rules
+    rules,
+    new Engine(rules)
+  )({}).then(() => {});
+});