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fix: null check on elapsedTime for some browsers (#7213)

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eddie 2023-08-23 10:53:51 -07:00 committed by GitHub
parent 8c7315760a
commit bcc57e4612
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1 changed files with 2 additions and 1 deletions
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src/tracing/utils.ts
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@ -2,7 +2,8 @@
* Returns the time elapsed between page load and now.
* @param markName the identifier for the performance mark to be created and measured.
*/
export function calculateElapsedTimeWithPerformanceMark(markName: string): number {
export function calculateElapsedTimeWithPerformanceMark(markName: string): number | undefined {
const elapsedTime = performance.mark(markName)
if (!elapsedTime) return undefined
return elapsedTime.startTime
}