constants.ts

export const CONSTANTS = {
  REGEX_VALID_URL: new RegExp(
    "^" +
      // protocol identifier
      "(?:(?:https?|ftp)://)" +
      // user:pass authentication
      "(?:\\S+(?::\\S*)?@)?" +
      "(?:" +
      // IP address exclusion
      // private & local networks
      "(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
      "(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
      "(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" +
      // IP address dotted notation octets
      // excludes loopback network 0.0.0.0
      // excludes reserved space >= 224.0.0.0
      // excludes network & broacast addresses
      // (first & last IP address of each class)
      "(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
      "(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
      "(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
      "|" +
      // host name
      "(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" +
      // domain name
      "(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" +
      // TLD identifier
      "(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
      // TLD may end with dot
      "\\.?" +
      ")" +
      // port number
      "(?::\\d{2,5})?" +
      // resource path
      "(?:[/?#]\\S*)?" +
      "$",
    "i"
  ),

  REGEX_CONTENT_TYPE_IMAGE: new RegExp("image/.*", "i"),

  REGEX_CONTENT_TYPE_AUDIO: new RegExp("audio/.*", "i"),

  REGEX_CONTENT_TYPE_VIDEO: new RegExp("video/.*", "i"),

  REGEX_CONTENT_TYPE_TEXT: new RegExp("text/.*", "i"),

  REGEX_CONTENT_TYPE_APPLICATION: new RegExp("application/.*", "i")
};