Add regression test

This commit is contained in:
Anders Hejlsberg 2018-02-05 13:56:22 -08:00
parent 0d3f2166e3
commit 6cf640ed3b

View file

@ -0,0 +1,8 @@
// @declaration: true
// Repro from #21637
interface JSONSchema4 {
a?: number
extends?: string | string[]
}