code: void reportError(Node n, Var var, String name) {
      JSDocInfo info = NodeUtil.getBestJSDocInfo(n);
      if (info == null || !info.getSuppressions().contains("const")) {
        Node declNode = var.getNode();
        String declaredPosition = declNode.getSourceFileName() + ":" + declNode.getLineno();
        compiler.report(JSError.make(n, CONST_REASSIGNED_VALUE_ERROR, name, declaredPosition));
      }
    }
docs: Reports a reassigned constant error.