TypeScript/tests/baselines/reference/declarationEmitInferredTypeAlias7.types
Anders Hejlsberg 6aeb8c12cc
Preserve type aliases for union and intersection types (#42149)
* Create separate types for equivalent aliased unions

* Accept new baselines

* Preserve original types for union types

* Accept new baselines

* Preserve intersection origin for union types

* Accept new baselines

* Accept new baselines

* Preserve aliases during relationship checks

* Accept new baselines

* Preserve aliases for intersection and indexed access types

* Accept new baselines

* Compute intersection-of-unions cross product without recursion

* Accept new baselines

* Use denormalized type objects for origin / support 'keyof' origins

* Accept new baselines

* Fix fourslash test

* Recursively extract named union types

* Accept new baselines

* Map on union origin in mapType to better preserve aliases and origins

* Remove redundant call

* Accept new baselines

* Revert back to declared type when branches produce equivalent union

* Accept new baselines

* Don't include denormal origin types in regular type statistics

* Fix issue with unions not being marked primitive-only

* Allow new alias to be associated with type alias instantiation

* Accept new baselines

* Revert "Accept new baselines"

This reverts commit 4507270cc1.

* Revert "Allow new alias to be associated with type alias instantiation"

This reverts commit 2c2d06dfe1.
2021-01-08 15:19:58 -10:00

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=== tests/cases/compiler/0.ts ===
export type Data = string | boolean;
>Data : Data
let obj: Data = true;
>obj : Data
>true : true
=== tests/cases/compiler/1.ts ===
let v = "str" || true;
>v : string | boolean
>"str" || true : true | "str"
>"str" : "str"
>true : true
export { v }
>v : string | boolean