The code I write here is very similar to github.com/json-iterator/go, so you may ask why reinvent the wheel.

For sure that I benefit a lot from the jsoniter library, but i found some inconvenience for me to use it in some condition, for example:

• the iterator methods ReadString accepts null, there is no method which accepts exactly string. I have to do some extra check before calling.
• some behavior is not compatible with the standard library.

On the other hand, I also want to learn how the jsoniter works, so there is this repo.

Here are some of the differences:

• the iterator methods accept the exact type, for example ReadString accepts only string, not null
• the behavior is almost the same as the standard library (when an error returns, the behavior may differ from the standard library)
• the error of the iterator is returned instead of being saved inside iterator

Some features of jsoniter are not implemented, and may be not implemented in the future neither. I choose only the ones I need to implement.