Function scanNumber

test/fixtures/snapshot/typescript.js:10921–10972

()

            return result + text.substring(start, pos);
        }
        function scanNumber() {
            var start = pos;
            var mainFragment = scanNumberFragment();
            var decimalFragment;
            var scientificFragment;
            if (text.charCodeAt(pos) === 46 /* CharacterCodes.dot */) {
                pos++;
                decimalFragment = scanNumberFragment();
            }
            var end = pos;
            if (text.charCodeAt(pos) === 69 /* CharacterCodes.E */ || text.charCodeAt(pos) === 101 /* CharacterCodes.e */) {
                pos++;
                tokenFlags |= 16 /* TokenFlags.Scientific */;
                if (text.charCodeAt(pos) === 43 /* CharacterCodes.plus */ || text.charCodeAt(pos) === 45 /* CharacterCodes.minus */)
                    pos++;
                var preNumericPart = pos;
                var finalFragment = scanNumberFragment();
                if (!finalFragment) {
                    error(ts.Diagnostics.Digit_expected);
                }
                else {
                    scientificFragment = text.substring(end, preNumericPart) + finalFragment;
                    end = pos;
                }
            }
            var result;
            if (tokenFlags & 512 /* TokenFlags.ContainsSeparator */) {
                result = mainFragment;
                if (decimalFragment) {
                    result += "." + decimalFragment;
                }
                if (scientificFragment) {
                    result += scientificFragment;
                }
            }
            else {
                result = text.substring(start, end); // No need to use all the fragments; no _ removal needed
            }
            if (decimalFragment !== undefined || tokenFlags & 16 /* TokenFlags.Scientific */) {
                checkForIdentifierStartAfterNumericLiteral(start, decimalFragment === undefined && !!(tokenFlags & 16 /* TokenFlags.Scientific */));
                return {
                    type: 8 /* SyntaxKind.NumericLiteral */,
                    value: "" + +result // if value is not an integer, it can be safely coerced to a number
                };
            }
            else {
                tokenValue = result;
                var type = checkBigIntSuffix(); // if value is an integer, check whether it is a bigint
                checkForIdentifierStartAfterNumericLiteral(start);
                return { type: type, value: tokenValue };
            }
        }
        function checkForIdentifierStartAfterNumericLiteral(numericStart, isScientific) {
            if (!isIdentifierStart(codePointAt(text, pos), languageVersion)) {
                return;