#utils #validation #js

regex-validator.js

export const is = {
  blank: /^\s*$/,
  string: /^[a-zA-Z]+$/,
  email: /^[a-z0-9._%+-]+@[a-z0-9.-]+.[a-z]{2,4}$/,
  tel: /^(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$/,
  specialNumeric: /^(?:[\d,\/().]*[a-zA-Z][a-zA-Z\d,\/().]*)?$/,
  streetAddress: /^\d+\s[A-z]+\s[A-z]+/,
  stateZip: /([A-Z]{2}) (\d{5})$/,
  number: /^\d+$/,
  alphaNumeric: /^[a-zA-Z0-9]+$/,
  image: /[\/.](gif|jpe?g|tiff|png|svg|pdf)$/,
  pdf: /[\/.]pdf$/,
  filepath: /(\\\\?([^\\/]*[\\/])*)([^\\/]+)$/,
  url: /^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/,
};

export const validate = (validator, value, not) => is[validator].test(value);

export const isEmail = (str) => is.email.test(str);
export const isEmpty = (str) => !str || 0 === str.length;
export const isBlank = (str) => !str || /^\s*$/.test(str);
export const isString = (str) => {
  return typeof str === "string" && !isEmpty(str) && !isBlank(str);
};

export const patterns = {
  blank: "^s*$",
  string: "^[a-zA-Z]+$",
  email: "^[a-z0-9._%+-]+@[a-z0-9.-]+.[a-z]{2,4}$",
  tel:
    "^(?:(?:+?1s*(?:[.-]s*)?)?(?:(s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])s*)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))s*(?:[.-]s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})s*(?:[.-]s*)?([0-9]{4})(?:s*(?:#|x.?|ext.?|extension)s*(d+))?$",
  specialNumeric: "^(?:[d,/().]*[a-zA-Z][a-zA-Zd,/().]*)?$",
  streetAddress: "^d+s[A-z]+s[A-z]+",
  stateZip: "([A-Z]{2}) (d{5})$",
  number: "^d+$",
  alphaNumeric: "^[a-zA-Z0-9]+$",
  image: "[/.](gif|jpe?g|tiff|png|svg|pdf)$",
  pdf: "[/.]pdf$",
  filepath: "(\\\\?([^\\/]*[\\/])*)([^\\/]+)$",
  url:
    "^(http://www.|https://www.|http://|https://)?[a-z0-9]+([-.]{1}[a-z0-9]+)*.[a-z]{2,5}(:[0-9]{1,5})?(/.*)?$",
};

export function isEmpty(s) {
  return !s.length;
}

export function isBlank(s) {
  return isEmpty(s.trim());
}

validator.js

export const is = {
  string(str) {
    return typeof str === "string" || str instanceof String;
  },
  integer(num) {
    return num === parseInt(num, 10);
  },
  function(fn) {
    return typeof fn === "function";
  },
  object(obj) {
    return (obj && obj.constructor === Object) || obj === Object(obj);
  },
  empty(value) {
    // returns true when any of the conditions are met --
    // indicating that the value is considered empty

    if (value === null) return true;
    if (value === undefined) return true;
    // is empty string
    if (is.string(value) && value.trim().length === 0) return true;
    // is empty array
    if (Array.isArray(value) && value.length === 0) return true;
    // is empty object
    if (is.object(value) && Object.keys(value).length === 0) return true;
  },
  nan(num) {
    return isNaN(num);
  },
};