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microsoft / TypeScript Public

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Bring back return type narrowing + fixes#61359

Open

gabritto wants to merge 12 commits intomainmicrosoft/TypeScript:mainfrom

gabritto/fixedcondmicrosoft/TypeScript:gabritto/fixedcondCopy head branch name to clipboard

Conversation Commits12 (12)Checks Files changed

Open

Bring back return type narrowing + fixes#61359
gabritto wants to merge 12 commits intomainfrom
gabritto/fixedcond

Commits

Commits on Mar 5, 2025

Revert "Revert return type narrowing (#61136)"
gabritto
committed
add restriction on narrowable type constraint
gabritto
committed
relax restriction on extends type of narrowable conditional type
gabritto
committed
WIP: detect embedded references to a narrowable type parameter
gabritto
committed
Detect and construct narrowable references for embedded type parameters
gabritto
committed
validate optional param/property
gabritto
committed
format
gabritto
committed
rework non-primitive restriction to be based on conditional type branches
gabritto
committed
update tests
gabritto
committed
bring back conditional expression test
gabritto
committed

Commits on Mar 21, 2025

Also support classes. TODO: support parameter properties
gabritto
committed
fix baselines
gabritto
committed

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