export declare function startTrace(name: string): FirebaseTrace;
export declare function startHttpMetric(url: string, method: string): FirebaseHttpMetric;
export declare class FirebaseTrace {
	private nativeTrace;
	constructor(nativeTrace: FIRTrace);
	setValue(attribute: string, value: string): void;
	getValue(attribute: string): string;
	getAttributes(): {
		[field: string]: any;
	};
	removeAttribute(attribute: string): void;
	incrementMetric(metric: string, by: number): void;
	stop(): void;
}
export declare class FirebaseHttpMetric {
	private nativeHttpMetric;
	constructor(nativeHttpMetric: FIRHTTPMetric);
	setRequestPayloadSize(size: number): void;
	setHttpResponseCode(responseCode: number): void;
	stop(): void;
}