Accessors-override-property error allows possibly-correct synthetic properties #42635
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This is the simplest fix -- I'm going to check whether it's worthwhile to make it stricter next. Fixes #41347
typescript-bot
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Author: Team
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Will this change be incompatible with @RyanCavanaugh's investigation into accessors? Having |
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There might be a merge conflict, but Ryan's investigation would just change the function ('orthogonal' is overused but it applies here.) |
sandersn
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Feb 10, 2021
Originally from #42635, but this version is simpler.
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#41994 now includes this change, so I'll close this PR. |
sandersn
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May 31, 2022
* remove too-late fix * Allow any property from a mapped type * turn off error for any non-class base * Also handle synthetic properties more laxly Originally from #42635, but this version is simpler. * update baselines * Update baselines * createUnionProperty of accessors creates an accessor Seems simple and doesn't break much. I need to double-check the few test failures, however. * Fix computation of write type of accessors * Calculate property-vs-accessor in existing loop Instead of looping over the props list 3 more times. * Undo synthetic accessor change * Minimise diff
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Previously, accessors could not override synthetic properties, such as those created by an intersection, at all if any constituent had the Property symbol flag set. The set of exemptions for abstract or interface-derived properties didn't apply. This PR instead allows those exemptions to apply if they apply to any of the synthetic property's declarations. This allows a mixin pattern used in rush to work.
Fixes #41347