/
initMetric.ts
34 lines (31 loc) · 1.15 KB
/
initMetric.ts
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/*
* Copyright 2020 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.
*/
import {isBFCacheRestore} from './bfcache.js';
import {generateUniqueID} from './generateUniqueID.js';
import {getNavigationEntry} from './getNavigationEntry.js';
import {Metric} from '../types.js';
export const initMetric = (name: Metric['name'], value?: number): Metric => {
const navigationEntry = getNavigationEntry();
return {
name,
value: typeof value === 'undefined' ? -1 : value,
delta: 0,
entries: [],
id: generateUniqueID(),
navigationType: isBFCacheRestore() ? 'back_forward_cache' :
navigationEntry && navigationEntry.type,
};
};