Doesn’t read commonmark when included in unit testing

[dixy-xavier]

I create a util function that uses commonmark to convert markdown to HTML. And then I tried to write a test case for that function, it throws error saying that commonmark is not defined.

Here is my code:

markdown.test.js

const {markdownToHtml} = require('../../services/util/markdown');
const assert = require('assert');

describe('Commonmark plugin', () => {
  it('normal text returns HTML string', () => {
    assert.strictEqual(markdownToHtml('Hello world').toBe('<p>Hello world</p>\n'));
  });
});

markdown.js

const markdownToHtml = (text) => {
  const reader = new commonmark.Parser();
  const writer = new commonmark.HtmlRenderer({safe: true});

  const parsed = reader.parse(text); // parsed is a 'Node' tree
  // transform parsed if you like...
  const result = writer.render(parsed); // result is a String
  return result;
};

module.exports = {markdownToHtml};

I get the following error when I run the test:
ReferenceError: commonmark is not defined

[jgm]

You'll need something like var commonmark = require('commonmark').