Subtract breaks when there is a 0 between two values

[johnfrancisgit]

If you do a subtraction with a 0 in the list of values to subtract, the results is incorrect.
Example: {"-": [10, 0, 100]} should be -90 but it returns 10 for some reason

[jwadhams]

It's actually ignoring the third arg. In the docs https://jsonlogic.com/operations.html#arithmetic----- we say because + and * are associative, they take 1-to-n arguments.
- only takes one arg (make negative) and two args (subtract) it does not process args after the second.

[jwadhams]

Here's the relevant snippet of code, comparing - to +. I don't think it's covered one way or the other by unit tests, arguably we could make it take a list and use a reducer, but I'm not sure its "intuitive"

https://github.com/jwadhams/json-logic-js/blob/master/logic.js#L92-L108

[johnfrancisgit]

Ah, I see. Thanks for the clarification @jwadhams
I think it would be useful to do subtraction with more than 2 values.
The workaround I suppose is to nest them like {"-": [{"-": [10, 0]}, 100]}