changed to pre-commit

src/Operations.js

@@ -0,0 +1,11 @@
+/* @flow */
+
+class Operation { //eslint-disable-line no-unused-vars
+  i : number;
+  constructor (op) {
+    this.i = op.i;
+  }
+  yay () {
+    return this.i;
+  }
+}