Marc Mintel
5397309103
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{"version":3,"file":"observe.js","sources":["../../../../../src/metrics/web-vitals/lib/observe.ts"],"sourcesContent":["/*\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * https://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ninterface PerformanceEntryMap {\n event: PerformanceEventTiming[];\n 'first-input': PerformanceEventTiming[];\n 'layout-shift': LayoutShift[];\n 'largest-contentful-paint': LargestContentfulPaint[];\n 'long-animation-frame': PerformanceLongAnimationFrameTiming[];\n paint: PerformancePaintTiming[];\n navigation: PerformanceNavigationTiming[];\n resource: PerformanceResourceTiming[];\n // Sentry-specific change:\n // We add longtask as a supported entry type as we use this in\n // our `instrumentPerformanceObserver` function also observes 'longtask'\n // entries.\n longtask: PerformanceEntry[];\n // Sentry-specific change:\n // We add element as a supported entry type for ElementTiming API\n element: PerformanceEntry[];\n}\n\n/**\n * Takes a performance entry type and a callback function, and creates a\n * `PerformanceObserver` instance that will observe the specified entry type\n * with buffering enabled and call the callback _for each entry_.\n *\n * This function also feature-detects entry support and wraps the logic in a\n * try/catch to avoid errors in unsupporting browsers.\n */\nexport const observe = <K extends keyof PerformanceEntryMap>(\n type: K,\n callback: (entries: PerformanceEntryMap[K]) => void,\n opts: PerformanceObserverInit = {},\n): PerformanceObserver | undefined => {\n try {\n if (PerformanceObserver.supportedEntryTypes.includes(type)) {\n const po = new PerformanceObserver(list => {\n // Delay by a microtask to workaround a bug in Safari where the\n // callback is invoked immediately, rather than in a separate task.\n // See: https://github.com/GoogleChrome/web-vitals/issues/277\n // eslint-disable-next-line @typescript-eslint/no-floating-promises\n Promise.resolve().then(() => {\n callback(list.getEntries() as PerformanceEntryMap[K]);\n });\n });\n po.observe({ type, buffered: true, ...opts });\n return po;\n }\n } catch {\n // Do nothing.\n }\n return;\n};\n"],"names":[],"mappings":"AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAqBA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACO,MAAM,UAAU;AACvB,EAAE,IAAI;AACN,EAAE,QAAQ;AACV,EAAE,IAAI,GAA4B,EAAE;AACpC,KAAsC;AACtC,EAAE,IAAI;AACN,IAAI,IAAI,mBAAmB,CAAC,mBAAmB,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE;AAChE,MAAM,MAAM,EAAA,GAAK,IAAI,mBAAmB,CAAC,QAAQ;AACjD;AACA;AACA;AACA;AACA,QAAQ,OAAO,CAAC,OAAO,EAAE,CAAC,IAAI,CAAC,MAAM;AACrC,UAAU,QAAQ,CAAC,IAAI,CAAC,UAAU,IAA6B;AAC/D,QAAQ,CAAC,CAAC;AACV,MAAM,CAAC,CAAC;AACR,MAAM,EAAE,CAAC,OAAO,CAAC,EAAE,IAAI,EAAE,QAAQ,EAAE,IAAI,EAAE,GAAG,IAAA,EAAM,CAAC;AACnD,MAAM,OAAO,EAAE;AACf,IAAI;AACJ,EAAE,EAAE,MAAM;AACV;AACA,EAAE;AACF,EAAE;AACF;;;;"} |