function camelize(str) {
  return str.replace(/-(\w)/g, (_, c) => (c ? c.toUpperCase() : ''))
}
`casing.camelCase()` converts the beginning to lowercase,
but does not convert the case of the beginning character when converting with Vue3.
@see https://github.com/vuejs/core/blob/ae4b0783d78670b6e942ae2a4e3ec6efbbffa158/packages/shared/src/index.ts#L105
@param {string} str