TypeScript

First incremental rebuild after a clean build is up to 75× slower than a full check

empty mappings in .d.ts.map for export default of a non-identifier expression

Remove ts-expect-error comments from `promiseTry.ts`

`getChildren()` includes synthetic NodeObjects, that can't easily be discerned from RemoteNodes

[LSP] Memory of configured projects is never released, even after didClose of all files — ~70 MB retained per project (7.0.2 and 7.1.0-dev.20260926.1)

Confusing error message for labels used before definition

TypeScript 7.0.2 scanner does not advance on bare hash

display the inferred return type

TypeScript 7.0.2 silently runs out of memory while typechecking a project that TypeScript 6.0.3 checks successfully

Program.emitToString() silently omits real files due to nondeterministic isSourceFileFromExternalLibrary() misclassification