xhr: add new key for ProgressEvent constructor option types#3137
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captainbrosset
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Jul 10, 2025
ddbeck
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xhr: add new keyxhr: add new key for ProgressEvent constructor option types
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As far as I can tell, this is a (dubious) "feature" that changes the underlying supported types, which only has the effect of allowing negative JavaScript number values, which were previously forbidden. I think this barely matters, so I folded into the regular XHR feature.
Related:
ProgressEvent()constructor optionsloaded+totalaccept double in Chrome 136 + Firefox 138 mdn/browser-compat-data#26956