Chai assertion error if in text are hyphen
<p>There are uncaught assertion error in Chai with Cucumber-js. If in the DocString there are a hyphen - assertion does not work.
So if I have scenario DocString, like</p>

<pre><code>Then I see message:
'''
somewhat1
somewhat2
somewhat3 - somewhat4
'''
</code></pre>

<p>I cannot use <code>assert.equal</code> or a<code>ssert.include</code> assertions because recieve an assertion error, although both arguments is absolutely identical.
If I use DocString without hyphen, like</p>

<pre><code>Then I see message:
'''
somewhat1
somewhat2
somewhat3
'''
</code></pre>

<p>there are no any troubles.</p>

<p>Why I recieve an error when use hyphen?
There are any idea how can I use hyphen right in DocString?
Thanks.</p>