major | preminor | prepatch | prerelease]
</code></pre><h2 id="description">DESCRIPTION</h2>
<p>Run this in a package directory to bump the version and write the new
data back to <code>package.json</code> and, if present, <code>npm-shrinkwrap.json</code>.</p>
<p>The <code>newversion</code> argument should be a valid semver string, <em>or</em> a
valid second argument to semver.inc (one of <code>patch</code>, <code>minor</code>, <code>major</code>,
<code>prepatch</code>, <code>preminor</code>, <code>premajor<