29     var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;
46     function isDecimalDigit(ch) {  argument
47         return 0x30 <= ch && ch <= 0x39;  // 0..9
50     function isHexDigit(ch) {  argument
51         return 0x30 <= ch && ch <= 0x39 ||  // 0..9
52             0x61 <= ch && ch <= 0x66 ||     // a..f
53             0x41 <= ch && ch <= 0x46;       // A..F
56     function isOctalDigit(ch) {  argument
57         return ch >= 0x30 && ch <= 0x37;  // 0..7
70     function isWhiteSpace(ch) {  argument
71         return ch === 0x20 || ch === 0x09 || ch === 0x0B || ch === 0x0C || ch === 0xA0 ||
72             ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
77     function isLineTerminator(ch) {  argument
78         return ch === 0x0A || ch === 0x0D || ch === 0x2028 || ch === 0x2029;
91     for(ch = 0; ch < 0x80; ++ch) {
92         IDENTIFIER_START[ch] =
93             ch >= 0x61 && ch <= 0x7A ||  // a..z
94             ch >= 0x41 && ch <= 0x5A ||  // A..Z
95             ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
99     for(ch = 0; ch < 0x80; ++ch) {
100         IDENTIFIER_PART[ch] =
101             ch >= 0x61 && ch <= 0x7A ||  // a..z
102             ch >= 0x41 && ch <= 0x5A ||  // A..Z
103             ch >= 0x30 && ch <= 0x39 ||  // 0..9
104             ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
107     function isIdentifierStartES5(ch) {  argument
108 …return ch < 0x80 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
111     function isIdentifierPartES5(ch) {  argument
112 …  return ch < 0x80 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
115     function isIdentifierStartES6(ch) {  argument
116 …return ch < 0x80 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
119     function isIdentifierPartES6(ch) {  argument
120 …  return ch < 0x80 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));