Is YML a better choice for configuration file?

[haojianzong]

Currently we are using JSON, but YML requires less characters and is easier to modify in CLI. What do you think?

Example from a similar code generator lib: https://github.com/krzysztofzablocki/Sourcery/blob/master/SourceryTests/Stub/Configs/multi.yml

[haven2world]

I think we can support both?
But we'd better keep JSON, for many front-end engineers, they're more familiar with JSON and maybe have no idea what yml is.

[MikeChongCan]

yaml is also good.
I think we can find a way to support both yaml, json and even TypeScript (example).

IMO, these configuration files are portable to difference languages. For example,
https://github.com/spf13/viper is a Golang configuration solution for

JSON, TOML, YAML, HCL, envfile and Java properties config files