ref: 7ed35649bb5b7ce79c7a01f1b1d8cb850b8d388a dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]