Function codePointToSymbol

misc/test-browser/mocha.js:10580–10608

(codePoint, strict)

  	// Modified version of `ucs2encode`; see https://mths.be/punycode.
  	var codePointToSymbol = function(codePoint, strict) {
  		var output = '';
  		if ((codePoint >= 0xD800 && codePoint <= 0xDFFF) || codePoint > 0x10FFFF) {
  			// See issue #4:
  			// “Otherwise, if the number is in the range 0xD800 to 0xDFFF or is
  			// greater than 0x10FFFF, then this is a parse error. Return a U+FFFD
  			// REPLACEMENT CHARACTER.”
  			if (strict) {
  				parseError('character reference outside the permissible Unicode range');
  			}
  			return '\uFFFD';
  		}
  		if (has(decodeMapNumeric, codePoint)) {
  			if (strict) {
  				parseError('disallowed character reference');
  			}
  			return decodeMapNumeric[codePoint];
  		}
  		if (strict && contains(invalidReferenceCodePoints, codePoint)) {
  			parseError('disallowed character reference');
  		}
  		if (codePoint > 0xFFFF) {
  			codePoint -= 0x10000;
  			output += stringFromCharCode(codePoint >>> 10 & 0x3FF | 0xD800);
  			codePoint = 0xDC00 | codePoint & 0x3FF;
  		}
  		output += stringFromCharCode(codePoint);
  		return output;
  	};

  	var hexEscape = function(codePoint) {
  		return '&#x' + codePoint.toString(16).toUpperCase() + ';';