--description--

A version is one of the required fields of your package.json file. This field describes the current version of your project. Here's an example:

"version": "1.2.0",

--instructions--

Add a version to the package.json file of your project.

--hints--

package.json should have a valid "version" key

fetch(code + '/_api/package.json')
  .then(response => response.json())
  .then(
    data => {
      assert.exists(data.version, '"version" is missing');
    },
    error => {
      throw new Error(error.message || error.responseText);
    }
  );