Factorio Forums

When exporting data using the new --dump-data flag, the resulting JSON is invalid. There are multiple properties like:

`"literal_value": inf`

Since `inf` is not quoted, it is invalid JSON and the file cannot be parsed.

Assuming these represent positive / negative infinity, there doesn't seem to be a supported way to represent those in JSON. I would personally find `null`, or`"inf"/"-inf"`, or `"Infinity" / "-Infinity"` acceptable (as long as those strings are quoted in order to be valid JSON).

Bilka pointed out that the new 'dump data raw' dumps using the format our parser can handle which includes inf/nan. Looking online it seems it's not an uncommon issue other people have run into across multiple other languages/parsers.

I glossed over this comment from Rseding91 in Discord on 1/28/23 at the time but I think this describes the exact issue.

Generally I would say if JavaScript can't parse your JavaScript Object Notation you've got a problem, but if this is known and can't be resolved easily, I can always run a dirty little regex against it before I try to parse it.

I've changed it for the next release so it will write infinite as "inf" and "-inf".