aws s3 bucket name validation RegEx

valiadion.js

{
  bucketNameValidationRules: [
    // rules from https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-s3-bucket-naming-requirements.html
    v => !!v || 'Name is required',
    v => (v && /^[\a-z\d\.\-]*$/.test(v)) || 'The bucket name can contain only lower-case characters, numbers, periods, and dashes.',
    v => (v && /^[\a-z\d]/.test(v)) || 'The bucket name must start with a lowercase letter or number.',
    v => (v && !/\-$/.test(v)) || `The bucket name can't end with a dash`,
    v => (v && !/\.+\./.test(v)) || `The bucket name can't have consecutive periods`,
    v => (v && !/\-+\.$/.test(v)) || `The bucket name can't end with dash adjacent to period`,
    v => (v && !/^(?:(?:^|\.)(?:2(?:5[0-5]|[0-4]\d)|1?\d?\d)){4}$/.test(v)) || `The bucket name can't be formatted as an IP address`,
    v => (v && (v.length >= 3 && v.length <= 63)) || 'The bucket name can be between 3 and 63 characters long.'
  ]
}