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fix ajax timing calculation #35

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fix ajax timing calculation #35

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Commits on Apr 26, 2024

  1. fix ajax timing calculation 

    ajax timings are derived from `event.timeStamp` values. latest browser improvements in anti-fingerprinting measures made APIs return timestamps with reduced time precision. calculating timings with those values with `new Date().getTime()` will blow up because it returns a different precision value. the solution is to use `performance.now()` in place of `Date()`

https://developer.mozilla.org/en-US/docs/Web/API/Event/timeStamp
https://developer.mozilla.org/en-US/docs/Web/API/DOMHighResTimeStamp
https://developer.mozilla.org/en-US/docs/Web/API/Performance/now

should resolve peek#33
should resolve peek#25
    @glaszig
    glaszig committed Apr 26, 2024
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