JSON gets used for a lot of different use cases. One of it: Config files. For example, you can configure the code editor VS Code via a
settings.json config file.
One downside: The original JSON specification disallows comments. But comments are very useful - for example, you could note why you have selected a specific config value, or write down alternative config values. VS Code allows comments in its config files - it calls this format “JSON with comments”, or
jsonc mode. You can enable
jsonc mode for any file. Therefore, writing JSON with comments is a solved problem.
But: As an application developer - how do you parse such a JSON file with comments, like VS Code does? There is the jsonc-parser library for Node.js by Microsoft themselves, the developers of VS Code.
The most popular JSON5 parser is also one for Node.js, with over 5k stars - but there exist implementations for other languages as well. E.g. for Golang and Rust.
Might be useful for projects where you want to allow configuration via JSON files! 💡
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