How to camelize a hyphen-delimited string in JS

We need to write a function that uniformly converts hello-world to helloWorld

const camelizeRE = /-(\w)/g;

const camelize = cached((str) => {
  return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ""));
});

camelize("hello-world");
// "helloWorld"