diff options
| author | altaf-creator <dev@altafcreator.com> | 2025-11-16 19:08:29 +0800 |
|---|---|---|
| committer | altaf-creator <dev@altafcreator.com> | 2025-11-16 19:08:29 +0800 |
| commit | 434aa8343fdcbb4d5002f934979913c099489bee (patch) | |
| tree | 55bab4ec5a6151be57797d34f61faf5ea744471b /frontend-old/node_modules/web-vitals/src/lib/observe.ts | |
| parent | 893c388d4e99442a36005e5971a87730623f946e (diff) | |
sdk, del
Diffstat (limited to 'frontend-old/node_modules/web-vitals/src/lib/observe.ts')
| -rw-r--r-- | frontend-old/node_modules/web-vitals/src/lib/observe.ts | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/frontend-old/node_modules/web-vitals/src/lib/observe.ts b/frontend-old/node_modules/web-vitals/src/lib/observe.ts deleted file mode 100644 index f3127a3..0000000 --- a/frontend-old/node_modules/web-vitals/src/lib/observe.ts +++ /dev/null @@ -1,66 +0,0 @@ -/* - * 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. - */ - -interface PerformanceEntryMap { - 'event': PerformanceEventTiming[]; - 'first-input': PerformanceEventTiming[]; - 'layout-shift': LayoutShift[]; - 'largest-contentful-paint': LargestContentfulPaint[]; - 'long-animation-frame': PerformanceLongAnimationFrameTiming[]; - 'paint': PerformancePaintTiming[]; - 'navigation': PerformanceNavigationTiming[]; - 'resource': PerformanceResourceTiming[]; -} - -/** - * Takes a performance entry type and a callback function, and creates a - * `PerformanceObserver` instance that will observe the specified entry type - * with buffering enabled and call the callback _for each entry_. - * - * This function also feature-detects entry support and wraps the logic in a - * try/catch to avoid errors in unsupporting browsers. - */ -export const observe = <K extends keyof PerformanceEntryMap>( - type: K, - callback: (entries: PerformanceEntryMap[K]) => void, - opts?: PerformanceObserverInit, -): PerformanceObserver | undefined => { - try { - if (PerformanceObserver.supportedEntryTypes.includes(type)) { - const po = new PerformanceObserver((list) => { - // Delay by a microtask to workaround a bug in Safari where the - // callback is invoked immediately, rather than in a separate task. - // See: https://github.com/GoogleChrome/web-vitals/issues/277 - Promise.resolve().then(() => { - callback(list.getEntries() as PerformanceEntryMap[K]); - }); - }); - po.observe( - Object.assign( - { - type, - buffered: true, - }, - opts || {}, - ) as PerformanceObserverInit, - ); - return po; - } - } catch (e) { - // Do nothing. - } - return; -}; |
