Yup helper functions.

yup_helpers.js

import {string, addMethod } from 'yup';

/**
 * string().isbn()
 * @param {String} message message to display when invalid.
 */
// eslint-disable-next-line no-template-curly-in-string
addMethod(string, 'isbn', function (message = '${path} must be a valid ISBN') {
    const rISBN = /(?:(?=.{17}$)97[89][ -](?:[0-9]+[ -]){2}[0-9]+[ -][0-9]|97[89][0-9]{10}|(?=.{13}$)(?:[0-9]+[ -]){2}[0-9]+[ -][0-9Xx]|[0-9]{9}[0-9Xx])/;
    return this.matches(rISBN, {
        name: 'isbn',
        message,
        excludeEmptyString: false
    });
});

/**
 * string().phone()
 * @param {String} message message to display when invalid.
 */
// eslint-disable-next-line no-template-curly-in-string
addMethod(string, 'phone', function (message = '${path} must be a valid phone number') {
    const rPHONE = /^(1\s*[-/.]?)?(\((\d{3})\)|(\d{3}))\s*[-/.]?\s*(\d{3})\s*[-/.]?\s*(\d{4})\s*(([xX]|[eE][xX][tT])\.?\s*(\d+))*$/;
    return this.matches(rPHONE, {
        name: 'phone',
        message,
        excludeEmptyString: false
    });
});