Function PatternString

PatternString(brand: string, pattern: RegExp): ValidatedBrand<string, string>

Create a string brand that matches a regex pattern

Parameters

brand: string
pattern: RegExp

Returns ValidatedBrand<string, string>

Example

const HexColor = PatternString("HexColor", /^#[0-9a-f]{6}$/i)
const red = HexColor.of("#ff0000") // Some(Brand<"HexColor", string>)
const invalid = HexColor.of("red") // None

Example

const PhoneNumber = PatternString("PhoneNumber", /^\+?[1-9]\d{1,14}$/)
const phone = PhoneNumber.from("+1234567890")
  .map(p => formatPhoneNumber(p))
  .getOrElse("Invalid phone number")