TS5069

Option 'declarationMap' cannot be specified without specifying option 'declaration' or option 'composite'.

Broken Code ❌

{
  "compilerOptions": {
    "declaration": false,
    "declarationMap": true
  }
}

Fixed Code ✔️

You have to activate the "declaration" property before you can activate "declarationMap":

{
  "compilerOptions": {
    "declaration": true,
    "declarationMap": true
  }
}