Class

examples/react/start-basic-cloudflare/worker-configuration.d.ts:1390–1390

 * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FormData)
 */
declare class FormData {
    constructor();
    /**
     * The **`append()`** method of the FormData interface appends a new value onto an existing key inside a `FormData` object, or adds the key if it does not already exist.