title: Add refrrence for custom commands declaration in Cypress.io
body: <p>I added some custom commands to my project and I also added a declaration file. According to <a href="https://docs.cypress.io/guides/tooling/intelligent-code-completion.html#Reference-type-declarations-via-tsconfig" rel="nofollow noreferrer">Cypress's documentation</a>, they say <code>&quot;To include the new &quot;.d.ts&quot; file into IntelliSense, I could update tsconfig.json&quot;</code>, so I did and I don't know what is wrong...</p>
  <p>the <code>tsconfig</code> file :</p>
  <pre><code>{
    &quot;compilerOptions&quot;: {
      &quot;target&quot;: &quot;es5&quot;,
      &quot;module&quot;: &quot;commonjs&quot;,
      &quot;allowJs&quot;: true,
      &quot;strict&quot;: true,
      &quot;baseUrl&quot;: &quot;.&quot;,
      &quot;paths&quot;: {
        &quot;cypress&quot;: [
          &quot;../node_modules&quot;
        ],
        &quot;support&quot;: [
          &quot;../support&quot;
        ]
      },
      &quot;types&quot;: [
        &quot;cypress&quot;,
        &quot;support&quot;
      ],
      &quot;esModuleInterop&quot;: true,
      &quot;skipLibCheck&quot;: true,
      &quot;forceConsistentCasingInFileNames&quot;: true
    },
    &quot;include&quot;: [
      &quot;**/*.ts&quot;,
      &quot;**/*.d.ts&quot;
    ],
    &quot;exclude&quot;: [
      &quot;config/config.js&quot;
    ]
  }
  </code></pre>