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Add regression test

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This commit is contained in:
Anders Hejlsberg 2017-12-23 19:28:13 -08:00
parent 5d3ecaebad
commit 319ad71b15
1 changed files with 14 additions and 0 deletions
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14
tests/cases/conformance/controlFlow/switchWithConstrainedTypeVariable.ts Normal file
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// @strict: true
// Repro from #20840
function function1<T extends 'a' | 'b'>(key: T) {
switch (key) {
case 'a':
key.toLowerCase();
break;
default:
key.toLowerCase();
break;
}
}