Multiple evaluation is unexpected

[jekor]

It seems that the right-hand side of assignments to signals may be evaluated more than once:

let s = $signal();
// response: Response
s = await response.text();

Failed to execute 'text' on 'Response': body stream already read

Workaround is to first assign to a normal variable:

let s = $signal();
// response: Response
const text = await response.text()
s = text;