import { PipeTransform, ArgumentMetadata } from './pipe-protocol';
export declare class ValidationPipe implements PipeTransform<any> {
    protected options: any;
    readonly priority = 1000;
    transform(value: any, metadata: ArgumentMetadata): Promise<any>;
    private toValidate;
    private toEmptyIfNil;
    private stripProtoKeys;
    private isPrimitive;
}
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