'extract to function' for variable that is assigned in switch

[mjbvz]

TypeScript Version: typescript@3.7.0-dev.20190910

Search Terms:

• refactor
• extract

Code

let value: string;
switch (Date.now()) {
    case 1:
        value = 'one';
        break;
    default:
        value = 'other';
        break;
}

console.log(value);

Select everything from let value to the end of the switch statement

Expected behavior:
A refactoring for extract to function is offered. It should change the code to something like:

let value = newFunction();

console.log(value);

function newFunction() {
    let value: string;
    switch (Date.now()) {
        case 1:
            value = 'one';
            break;
        default:
            value = 'other';
            break;
    }
    return value;
}

Actual behavior:
No refactoring offered

Playground Link:

Related Issues:

[DanielRosenwasser]

Thanks @a-tarasyuk!