TS2345 Error when using string literal types in array.map #11054

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1. nippur72 commented on Sep 22, 2016

   

   nino-porcino (nippur72)

   on Sep 22, 2016

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   It doesn't depend specifically on map, it's because the constant {type:'folder'} is misinterpreted as {type:string}:

   interface FolderContentItem{
       type: "folder";
   }
   
   function foo() {  // return type is { type: string }
      return {type:'folder'};
   }
   
   let a:FolderContentItem = foo();  // error
2. mhegazy commented on Sep 26, 2016

   

   Mohamed Hegazy (mhegazy)

   on Sep 26, 2016

   Contributor

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   The issue here is the type of a is never used. i have filed a new issue to track this change: #11152
3. Mohamed Hegazy (mhegazy)

   closed this as completedon Sep 26, 2016
4. microsoft

   locked and limited conversation to collaborators on Jun 19, 2018