title: Npm run command in child directory
body: <p>I have the following directory structure: </p>
  
  <pre><code>- a
    -node_modules
    -package.json
    -b
     -package.json
  </code></pre>
  
  <p>In the <code>a</code> directory, I'm running <code>npm i del</code>. When I add to the <code>package.json</code> of <code>b</code> the following script:</p>
  
  <pre><code>{
    "name": "b",
    "scripts": {
      "del": "del file.txt"
    }
  }
  </code></pre>
  
  <p>I'm getting an error:</p>
  
  <blockquote>
    <p>sh: del: command not found</p>
  </blockquote>
  
  <p>How can I use the parent bin inside the child? (I don't want to install anything in the child directory)</p>