_unescapeHtmlEntities()

in Readability.js [1615:1635]

• 17 lines of code
• 8 McCabe index (conditional complexity)

  _unescapeHtmlEntities(str) {
    if (!str) {
      return str;
    }

    var htmlEscapeMap = this.HTML_ESCAPE_MAP;
    return str
      .replace(/&(quot|amp|apos|lt|gt);/g, function (_, tag) {
        return htmlEscapeMap[tag];
      })
      .replace(/&#(?:x([0-9a-f]+)|([0-9]+));/gi, function (_, hex, numStr) {
        var num = parseInt(hex || numStr, hex ? 16 : 10);

        // these character references are replaced by a conforming HTML parser
        if (num == 0 || num > 0x10ffff || (num >= 0xd800 && num <= 0xdfff)) {
          num = 0xfffd;
        }

        return String.fromCodePoint(num);
      });
  },