TypeScript complain “has no initializer and is not definitely assigned in the constructor” about constructors by returning constructed object

Question

TypeScript show following error message to this code samples:

class MyClass {
  someField: boolean;
  constructor() {
    return { someField: true };
  }
}
         


        

Answer 1

Solution 1

Add (!) sign after name:

someField!:string;

Solution 2

Open TypeScript config file tsconfig.json and add this code to compiler options

 "angularCompilerOptions": {
    //   ...
    "strictPropertyInitialization": false
    //   ...
  }

Note: it will make static analysis weaker