diff --git a/packages/@uppy/utils/src/findAllDOMElements.js b/packages/@uppy/utils/src/findAllDOMElements.ts
similarity index 75%
rename from packages/@uppy/utils/src/findAllDOMElements.js
rename to packages/@uppy/utils/src/findAllDOMElements.ts
index 904d56660c..61bce36127 100644
--- a/packages/@uppy/utils/src/findAllDOMElements.js
+++ b/packages/@uppy/utils/src/findAllDOMElements.ts
@@ -2,11 +2,8 @@ import isDOMElement from './isDOMElement.ts'
 
 /**
  * Find one or more DOM elements.
- *
- * @param {string|Node} element
- * @returns {Node[]|null}
  */
-export default function findAllDOMElements (element) {
+export default function findAllDOMElements (element: string | Node): Node[] | null {
   if (typeof element === 'string') {
     const elements = document.querySelectorAll(element)
     return elements.length === 0 ? null : Array.from(elements)