Function scanIdentifier

test/fixtures/snapshot/typescript.js:11879–11891

(startCharacter, languageVersion)

            return token; // Still `SyntaKind.Unknown`
        }
        function scanIdentifier(startCharacter, languageVersion) {
            var ch = startCharacter;
            if (isIdentifierStart(ch, languageVersion)) {
                pos += charSize(ch);
                while (pos < end && isIdentifierPart(ch = codePointAt(text, pos), languageVersion))
                    pos += charSize(ch);
                tokenValue = text.substring(tokenPos, pos);
                if (ch === 92 /* CharacterCodes.backslash */) {
                    tokenValue += scanIdentifierParts();
                }
                return getIdentifierToken();
            }
        }
        function reScanGreaterToken() {
            if (token === 31 /* SyntaxKind.GreaterThanToken */) {
                if (text.charCodeAt(pos) === 62 /* CharacterCodes.greaterThan */) {