regex

Ensures the value of field under validation, passes the regex test. The regex can be defined as a string or a RegExp object.

For complex regex, always use the rule method.
const rules = {
  age: [
    rule('regex', /[a-z]+/)
  ]
}

// or
const rules = {
  age: [
    rule('regex', new RegExp('[a-z]+'))
  ]
}

For customized build, you can import this rule as follows.

import { regex } from 'indicative/builds/validations'