web-vitals/src/types/polyfills.ts

Easily measure performance metrics in JavaScript

/*
 * Copyright 2022 Google LLC
 *
 * 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
 *
 *     https://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.
 */

export type FirstInputPolyfillEntry = Omit<PerformanceEventTiming, 'processingEnd'>;

export interface FirstInputPolyfillCallback {
  (entry: FirstInputPolyfillEntry): void;
}

export type NavigationTimingPolyfillEntry = Omit<PerformanceNavigationTiming,
    'initiatorType' | 'nextHopProtocol' | 'redirectCount' | 'transferSize' |
    'encodedBodySize' | 'decodedBodySize' | 'type'> & {
  type: PerformanceNavigationTiming['type'];
}