I am trying to find at least one digit in a string but i am getting an error below

Question

I am trying to find at least one digit in a string by using regular expression but i dont know why it is not working

const password = 'sadrFeff4ss5';
const isExistsNumber = /^(?=*[0-9])/.test(password);

const isExistsNumber = /^(?=.[0-9])/.test(password); Here the regex pattern /^(?=[0-9])/ should find one number from the sring 'sadrFeff4ss5' but i am getting an syntax error Module parse failed: Invalid regular expression: /^(?=*[0-9])/: Nothing to repeat (53:28); I can't figure out where the problem is.