Test cases are not running

Hi,

I am trying to run the test cases with npm on my system, and each item I am facing this issue, the system does not proceed further from this.
```
root@a213ad56268a:/shreya/base64# npm test

> base-64@0.1.0 test /shreya/base64
> node tests/tests.js

Please wait.
```
I have look into the issue, the error is coming the quint-extras.js file present in node_modules/qunit-extras/qunit-extras.js directory.
Quint-extras is one of the dev dependencies of the package.

Please suggest what can be done to resolve the error.

Envirnonment -
1- npm version 6.4.1
2- node version v10.8.0

Start by running npm test and reading tests/tests.js to identify where execution stops after “Please wait.” Then inspect the referenced node_modules/qunit-extras/qunit-extras.js file and the dev-dependency setup. Done means npm test proceeds beyond that point and the test command completes.

Written by the indexing model from the issue text.