ref: 6b42532ddf1b3ebfd1c5b9b369f8478a7d8711ea dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]