import { Event, FileChangeEvent, FileStat, FileSystemProvider, FileSystemProviderCapabilities, Uri } from '@opensumi/ide-core-common';
export declare class DesignThemeFileSystemProvider implements FileSystemProvider {
    readonly capabilities: FileSystemProviderCapabilities;
    readonly onDidChangeCapabilities: Event<any>;
    onDidChangeFile: Event<FileChangeEvent>;
    stat(uri: Uri): Promise<void | FileStat>;
    readFile(uri: Uri): Promise<Uint8Array>;
    private toBuffer;
    readDirectory(): never;
    createDirectory(): never;
    rename(): never;
    delete(): never;
    watch(): never;
    writeFile(): never;
}
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