Someone else already mentioned JSON5 (https://json5.org/ https://json5.org/), which is JSON with a few ergonomic improvements, including comments. Hjson (https:

Someone else already mentioned JSON5 (https://json5.org/ https://json5.org/), which is JSON with a few ergonomic improvements, including comments. Hjson (https://hjson.org/ https://hjson.org/) is a similar, slightly more complex format with a few extra features such as unquoted strings for object values.