parsing.ts

function linePairContainerParser():P.Parser<M.FormteilContainer>{
  return P.regexp(/[0-9]+/).map(num => (
    {
      "kind": M.ContainerKind.FormteilContainer,
      uuid: UUID(),
      children: []
    }));
}


// this fails with:
//ERROR in src/app/types/parser.ts(92,3): error TS2322: Type 'Parser<{ "kind": ContainerKind; uuid: string; children: never[]; data: { "kind": FormteilDataKind; number: string; }; }>' is not assignable to type 'Parser<FormteilContainer>'.
//  Type '{ "kind": ContainerKind; uuid: string; children: never[]; data: { "kind": FormteilDataKind; number: string; }; }' is not assignable to type 'FormteilContainer'.
//    Types of property '"kind"' are incompatible.
//      Type 'ContainerKind' is not assignable to type 'ContainerKind.FormteilContainer
//
// while this works just  fine:
  
function linePairContainerParser():P.Parser<M.FormteilContainer>{
  const k: M.ContainerKind.FormteilContainer = M.ContainerKind.FormteilContainer;

  return P.regexp(/[0-9]+/).map(num => (
    {
      "kind": k,
      uuid: UUID(),
      children: []
    }));
}

// ContainerKind looks like this:
export enum ContainerKind {
  FormteilContainer = "FormteilContainer",
  MiscContainer = "MiscContainer",
  ParatextContainer = "ParatextContainer",
  RootContainer = "RootContainer",
  ZeileContainer = "ZeileContainer",
}