1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
|
tests/cases/compiler/destructureTupleWithVariableElement.ts(9,1): error TS18048: 's1' is possibly 'undefined'.
tests/cases/compiler/destructureTupleWithVariableElement.ts(10,1): error TS18048: 's2' is possibly 'undefined'.
tests/cases/compiler/destructureTupleWithVariableElement.ts(18,1): error TS18048: 's5' is possibly 'undefined'.
==== tests/cases/compiler/destructureTupleWithVariableElement.ts (3 errors) ====
// repro from #52302
type NonEmptyStringArray = [string, ...Array<string>]
const strings: NonEmptyStringArray = ['one', 'two']
const [s0, s1, s2] = strings;
s0.toUpperCase()
s1.toUpperCase()
~~
!!! error TS18048: 's1' is possibly 'undefined'.
s2.toUpperCase()
~~
!!! error TS18048: 's2' is possibly 'undefined'.
declare const strings2: [string, ...Array<string>, string]
const [s3, s4, s5] = strings2;
s3.toUpperCase()
s4.toUpperCase()
s5.toUpperCase()
~~
!!! error TS18048: 's5' is possibly 'undefined'.
|