Poor autocomplete inside object literal as the return value of a getter about typescript HOT 1 OPEN

interface Test1 {
  foo: (arg: number) => void;
}

const t1: Test1 = {
  get foo() {
    // Parameter 'arg' implicitly has an 'any' type.(7006)
    return (arg) => {};
  },
};

interface Test2 {
  bar: [string]
}

const t2: Test2 = {
  get bar() {
    // Type 'string[]' is not assignable to type '[string]'.
    //   Target requires 1 element(s) but source may have fewer.(2322)
    return ['']
  },
};