export interface FilePickerAcceptType {
    /** A string that describes the file type. */
    description?: string;
    /** An array of content types or file extensions that can be selected. */
    accept: Record<string, string[]>;
}
export interface ShowOpenFilePickerOptions {
    /** A boolean that indicates whether the picker should let the user apply file type filters. By default, this is `false`. */
    excludeAcceptAllOption?: boolean;
    /** An ID to be associated with the directory. If the same ID is used for another picker, it will open the same directory. */
    id?: boolean;
    /** A boolean that indicates whether the user can select multiple files. By default, this is `false`. */
    multiple?: boolean;
    /** A well known directory ("desktop", "downloads") or `FileSystemHandle` to open the dialog in. */
    startIn?: string | FileSystemDirectoryHandle;
    /** An array of file types that can be selected. */
    types?: FilePickerAcceptType[];
}
declare global {
    function showOpenFilePicker(
    /** An object containing options that control the file picker's behavior. */
    options?: ShowOpenFilePickerOptions): Promise<FileSystemFileHandle[]>;
}
export declare const showOpenFilePicker: typeof global.showOpenFilePicker;