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Add regression test

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This commit is contained in:
Anders Hejlsberg 2018-12-27 14:05:14 -10:00
parent 5e1d490e58
commit a400a8afec
1 changed files with 8 additions and 2 deletions
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10
tests/cases/compiler/typeArgumentDefaultUsesConstraintOnCircularDefault.ts
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@ -1,5 +1,11 @@
type Test<T extends string = T> = { value: T };
type Test<T extends string = T> = { value: T }; // Error
let zz: Test = { foo: "abc" }; // should error on comparison with Test<string>
let zzy: Test = { value: {} }; // should error
let zzy: Test = { value: {} };
// Simplified repro from #28873
class C1<T extends C1 = any> {}
class C2<T extends C2<any> = any> {}