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Diffstat (limited to 'frontend-old/node_modules/web-vitals/src/attribution/onFCP.ts')
| -rw-r--r-- | frontend-old/node_modules/web-vitals/src/attribution/onFCP.ts | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/frontend-old/node_modules/web-vitals/src/attribution/onFCP.ts b/frontend-old/node_modules/web-vitals/src/attribution/onFCP.ts deleted file mode 100644 index 079bf91..0000000 --- a/frontend-old/node_modules/web-vitals/src/attribution/onFCP.ts +++ /dev/null @@ -1,76 +0,0 @@ -/* - * 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. - */ - -import {getBFCacheRestoreTime} from '../lib/bfcache.js'; -import {getLoadState} from '../lib/getLoadState.js'; -import {getNavigationEntry} from '../lib/getNavigationEntry.js'; -import {onFCP as unattributedOnFCP} from '../onFCP.js'; -import { - FCPAttribution, - FCPMetric, - FCPMetricWithAttribution, - ReportOpts, -} from '../types.js'; - -const attributeFCP = (metric: FCPMetric): FCPMetricWithAttribution => { - // Use a default object if no other attribution has been set. - let attribution: FCPAttribution = { - timeToFirstByte: 0, - firstByteToFCP: metric.value, - loadState: getLoadState(getBFCacheRestoreTime()), - }; - - if (metric.entries.length) { - const navigationEntry = getNavigationEntry(); - const fcpEntry = metric.entries[metric.entries.length - 1]; - - if (navigationEntry) { - const activationStart = navigationEntry.activationStart || 0; - const ttfb = Math.max(0, navigationEntry.responseStart - activationStart); - - attribution = { - timeToFirstByte: ttfb, - firstByteToFCP: metric.value - ttfb, - loadState: getLoadState(metric.entries[0].startTime), - navigationEntry, - fcpEntry, - }; - } - } - - // Use Object.assign to set property to keep tsc happy. - const metricWithAttribution: FCPMetricWithAttribution = Object.assign( - metric, - {attribution}, - ); - return metricWithAttribution; -}; - -/** - * Calculates the [FCP](https://web.dev/articles/fcp) value for the current page and - * calls the `callback` function once the value is ready, along with the - * relevant `paint` performance entry used to determine the value. The reported - * value is a `DOMHighResTimeStamp`. - */ -export const onFCP = ( - onReport: (metric: FCPMetricWithAttribution) => void, - opts?: ReportOpts, -) => { - unattributedOnFCP((metric: FCPMetric) => { - const metricWithAttribution = attributeFCP(metric); - onReport(metricWithAttribution); - }, opts); -}; |
