/**
 * Copyright 2019, OpenCensus Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { TimeSeries, Timestamp } from '../export/types';
export interface CumulativePoint {
    /** Reset cumulative metric. */
    reset(): void;
    /**
     * Increment the cumulative metric.
     * @param val The new value.
     */
    inc(val?: number): void;
    /**
     * Returns the TimeSeries with one or more Point.
     *
     * @param now The time at which the cumulative is recorded.
     * @returns The TimeSeries.
     */
    getTimeSeries(now: Timestamp): TimeSeries;
}