JoostK
f8af49eb75
When building a library, the `rootDir` option is configured to ensure that all source files are present within the entry-point that is being build. This imposes an extra constraint on the reference emit logic, which does not allow emitting a reference into a source file outside of this `rootDir`. During the generation of type-check blocks we used to make a best-effort estimation of whether a type reference can be emitted into the type-check file. This check was relaxed in #42492 to support emitting more syntax forms and type references, but this change did not consider the `rootDir` constraint that is present in library builds. As such, the compiler might conclude that a type reference is eligible for emit into the type-check file, whereas in practice this would cause a failure. This commit changes the best-effort estimation into a "preflight" reference emit that is fully accurate as to whether emitting a type reference is possible. Fixes #43624 PR Close #44587
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