Incorrect type inference with discriminated unions.

interface DifferenceCreate {
    type: "CREATE";
    value: any;
}

interface DifferenceRemove {
    type: "REMOVE";
    oldValue: any;
}

interface DifferenceChange {
    type: "CHANGE";
    value: any;
    oldValue: any;
}

export type Difference = DifferenceCreate | DifferenceRemove | DifferenceChange;

function myFunction(): Difference {
    return { type: 'CREATE', value: 1 }
}

const test:Difference = await client.test.query();

Type '{ type: "CREATE"; value?: any; } | { type: "REMOVE"; oldValue?: any; } | { type: "CHANGE"; value?: any; oldValue?: any; }' is not assignable to type 'Difference'.
  Type '{ type: "CREATE"; value?: any; }' is not assignable to type 'Difference'.
    Type '{ type: "CREATE"; value?: any; }' is not assignable to type 'DifferenceCreate'.
      Property 'value' is optional in type '{ type: "CREATE"; value?: any; }' but required in type 'DifferenceCreate'.