String Literal Param in Default Type Definition in Interface Function Causes Breakage #1035

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1. frank-weindel commented on Jun 25, 2024

   

   Frank Weindel (frank-weindel)

   on Jun 25, 2024

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   I've confirmed this also occurs with double quoted " string literal types and number literal types. As well as when the extends keyword is used.

   let var1;
   
   interface MyInterface {
     func1<T = Lowercase<'StringLiteral'>>(): T;
     func2<T = Lowercase<"StringLiteral">>(): T;
     func3<T = Lowercase<123>>(): T;
   }
   
   let var2;

   let var1;
   
   interface MyInterface {
     func1<T extends Lowercase<'StringLiteral'>>(): T;
     func2<T extends Lowercase<"StringLiteral">>(): T;
     func3<T extends Lowercase<123>>(): T;
   }
   
   let var2;
2. Frank Weindel (frank-weindel)

   added 2 commits that reference this issue on Jun 25, 2024

   Fix string/number literals in interface method generic parameter defa…

   ...

   This issue will close once commit d84f2b1 is merged into the 'master' branch.

   d84f2b1

   Fix string/number literals in interface method generic parameter defa…

   ...

   This issue will close once commit 6023aad is merged into the 'master' branch.

   6023aad