Method offset_for_line

source/python.js:13542–13544

(line)

                }
            }
            offset_for_line(line) {
                return this._line_starting_offsets[line];
            }
            lineno_for_offset(offset) {
                const iter = this._line_starting_offsets.findIndex((value) => value > offset);
                return (iter === -1 ? this._line_starting_offsets.length : iter) - 1;