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path: root/shared/logger/node_modules/@sentry-internal/tracing/esm/browser/web-vitals/lib/initMetric.js
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import { WINDOW } from '../../types.js';
import { generateUniqueID } from './generateUniqueID.js';
import { getActivationStart } from './getActivationStart.js';
import { getNavigationEntry } from './getNavigationEntry.js';

/*
 * 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.
 */

const initMetric = (name, value) => {
  const navEntry = getNavigationEntry();
  let navigationType = 'navigate';

  if (navEntry) {
    if (WINDOW.document.prerendering || getActivationStart() > 0) {
      navigationType = 'prerender';
    } else {
      navigationType = navEntry.type.replace(/_/g, '-') ;
    }
  }

  return {
    name,
    value: typeof value === 'undefined' ? -1 : value,
    rating: 'good', // Will be updated if the value changes.
    delta: 0,
    entries: [],
    id: generateUniqueID(),
    navigationType,
  };
};

export { initMetric };
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