import { UploadContext } from './upload-context';
export interface FileUploader<NodeAttributes> {
    /**
     * Inserts the file (but doesn't start the upload operation) and returns an
     * object with this to be uploaded file's attributes.
     */
    insert: (file: File) => NodeAttributes;
    /**
     * Starts the upload operation and returns a promise. The promise will be
     * resolved by a successful upload with uploaded file's attributes, or rejected
     * because of an error.
     *
     * `upload` can update the object `context` to update information during
     * the upload process. `context` will be passed to the render function. The
     * render function can add a listener to `context` by using `context.addListener`
     * to get the updated values. The default render function will try to find the
     * keys `loaded` and `total` in `context`, which are two numbers that
     * represent the progress of the upload.
     */
    upload: (context: UploadContext) => Promise<NodeAttributes>;
    /**
     * Aborts the upload operation.
     */
    abort: () => void;
}