ref: 4fd18f1c27d3f1eba10c849a3c9cdb7d9dc33abc dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]