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tests/cases/compiler/indexerAsOptional.ts(3,9): error TS1019: An index signature parameter cannot have a question mark.
tests/cases/compiler/indexerAsOptional.ts(8,9): error TS1019: An index signature parameter cannot have a question mark.
==== tests/cases/compiler/indexerAsOptional.ts (2 errors) ====
interface indexSig {
//Index signatures can't be optional
[idx?: number]: any; //err
~
!!! error TS1019: An index signature parameter cannot have a question mark.
}
class indexSig2 {
//Index signatures can't be optional
[idx?: number]: any //err
~
!!! error TS1019: An index signature parameter cannot have a question mark.
}
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