in src/scanner.ts [1228:1246]
public scanRegExp(): RawToken {
const start = this.index;
const pattern = this.scanRegExpBody();
const flags = this.scanRegExpFlags();
const value = this.testRegExp(pattern, flags);
return {
type: Token.RegularExpression,
value: '',
pattern: pattern,
flags: flags,
regex: value,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: start,
end: this.index
};
}