export interface FilePickerIntake {
    accept(sessionId: string, files: Iterable<File>): void;
}
export declare class FilePickerController {
    private readonly intake;
    private readonly input;
    private sessionId;
    constructor(intake: FilePickerIntake, documentValue?: Document);
    open(sessionId: string): void;
    dispose(): void;
    private readonly onChange;
}