Polyfill: Fix off-by-1-or-2s error due to FP precision loss #3173
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Discovered by comparing the snapshot tests against other implementations. h/t Tim Chevalier for figuring out where the bug was. The spec is correct, no change needed. Update the snapshots accordingly. Regression from 7b924d4.
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #3173 +/- ##
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Coverage 96.91% 96.91%
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Files 22 22
Lines 10209 10219 +10
Branches 1839 1839
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+ Hits 9894 9904 +10
Misses 266 266
Partials 49 49 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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ptomato
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Bug observed in the proposal-temporal reference code, caused by improper implementation of AddTime (https://tc39.es/proposal-temporal/#sec-temporal-addtime) where the advice in Step 2 was not followed correctly. See tc39/proposal-temporal#3173
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Test262 tests in tc39/test262#4629 |
ptomato
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Oct 31, 2025
Bug observed in the proposal-temporal reference code, caused by improper implementation of AddTime (https://tc39.es/proposal-temporal/#sec-temporal-addtime) where the advice in Step 2 was not followed correctly. See tc39/proposal-temporal#3173
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Discovered by comparing the snapshot tests against other implementations. h/t @catamorphism for figuring out where the bug was.
The spec is correct, no change needed.
Update the snapshots accordingly.
Regression from 7b924d4.