@saeris/graphql-scalars/dist-src/ipv6.js

A collection of scalar types using Joi for validation

import { GraphQLScalarType, GraphQLError, Kind } from "graphql";
import { string as yupString } from "yup";
const decOctect = `(?:0{0,2}\\d|0?[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])`;
const ipv4address = `(?:${decOctect}\\.){3}${decOctect}`;
const hexDigit = `\\dA-Fa-f`;
const hexDigitOnly = `[${hexDigit}]`;
const h16 = `${hexDigitOnly}{1,4}`;
const ls32 = `(?:${h16}:${h16}|${ipv4address})`;
const IPv6SixHex = `(?:${h16}:){6}${ls32}`;
const IPv6FiveHex = `::(?:${h16}:){5}${ls32}`;
const IPv6FourHex = `(?:${h16})?::(?:${h16}:){4}${ls32}`;
const IPv6ThreeHex = `(?:(?:${h16}:){0,1}${h16})?::(?:${h16}:){3}${ls32}`;
const IPv6TwoHex = `(?:(?:${h16}:){0,2}${h16})?::(?:${h16}:){2}${ls32}`;
const IPv6OneHex = `(?:(?:${h16}:){0,3}${h16})?::${h16}:${ls32}`;
const IPv6NoneHex = `(?:(?:${h16}:){0,4}${h16})?::${ls32}`;
const IPv6NoneHex2 = `(?:(?:${h16}:){0,5}${h16})?::${h16}`;
const IPv6NoneHex3 = `(?:(?:${h16}:){0,6}${h16})?::`;
const ipv6address = `(?:${IPv6SixHex}|${IPv6FiveHex}|${IPv6FourHex}|${IPv6ThreeHex}|${IPv6TwoHex}|${IPv6OneHex}|${IPv6NoneHex}|${IPv6NoneHex2}|${IPv6NoneHex3})`;

const validate = value => yupString().strict(true).typeError(`Value is not string: ${value}`).matches(new RegExp(`^(?:${ipv6address}(?:\\/(?:0{0,2}\\d|0?[1-9]\\d|1[01]\\d|12[0-8]))?)$`), `Value is not a valid IPv6 address: ${value}`).validateSync(value);

export const IPv6Scalar = `scalar IPv6`;
export const IPv6 = new GraphQLScalarType({
  name: `IPv6`,
  description: `A field whose value is a IPv6 address: https://en.wikipedia.org/wiki/IPv6.`,

  serialize(value) {
    return validate(value);
  },

  parseValue(value) {
    return validate(value);
  },

  parseLiteral(ast) {
    if (ast.kind !== Kind.STRING) {
      throw new GraphQLError(`Can only validate strings as IPv6 addresses but got a: ${ast.kind}`);
    }

    return validate(ast.value);
  }

});