import { SerialTaskExecuteContext, SerialHandler } from '../../handler';
import { BusinessParams, SystemConfig } from '../../types';
declare class TtsRequest extends SerialHandler<string, string> {
    private webSocketInstance;
    private businessParams;
    private systemConfig;
    initProperty(systemConfig: SystemConfig, businessParams: BusinessParams): void;
    onActive(): void;
    executePreCheck(): boolean;
    execute(context: SerialTaskExecuteContext<string, Blob>): void;
    private generateRequestParams;
    private generateRequestUrl;
    protected onFinish(): void;
}
export default TtsRequest;