[js] Add missing file

src/vm/js/nqp-runtime/code-ref-with-statevars.js

@@ -0,0 +1,34 @@
+var CodeRef = require('./code-ref.js');
+class CodeRefWithStateVars extends CodeRef {
+  freshBlock() {
+    return this.closureTemplate();
+  }
+
+  $$clone() {
+    var clone = new CodeRefWithStateVars(this.name, undefined);
+    clone.$$call = this.freshBlock();
+    clone.codeObj = this.codeObj;
+    clone.staticCode = this.staticCode;
+    clone.closureTemplate = this.closureTemplate;
+    clone.outerCtx = this.outerCtx;
+    return clone;
+  }
+
+  closure(block) {
+    /* TODO cloning won't work with a closureTemplate */
+    throw 'CodeRefWithStateVars.closure NYI';
+  }
+
+  closureCtx(outerCtx) {
+    var closure = new CodeRefWithStateVars(this.name, this.cuid);
+    closure.codeObj = this.codeObj;
+    closure.$$call = this.freshBlock();
+    closure.closureTemplate = this.closureTemplate;
+    closure.staticCode = this;
+
+    closure.outerCtx = outerCtx;
+
+    return closure;
+  }
+};
+module.exports = CodeRefWithStateVars;