Attempted pattern matching ternary

[bbrk24]

trafficstars

undo := => engine = Engine.fromJSON json if json? := history.pop()

const undo = () =>(const json? = history.pop()? engine = Engine.fromJSON(json):void 0)

Workaround: put the function body on the next line

undo := =>
  engine = Engine.fromJSON json if json? := history.pop()

[edemaine]

A workaround for now:

undo := =>
  engine = Engine.fromJSON json if json? := history.pop()

So this is probably specific to the "don't wrap fat arrow in braces if it's a one-line expression" rule.

[STRd6]

Looks like this works now with the recent changes: https://civet.dev/playground?code=dW5kbyA6PSA9PiBlbmdpbmUgPSBFbmdpbmUuZnJvbUpTT04ganNvbiBpZiBqc29uPyA6PSBoaXN0b3J5LnBvcCgpCg%3D%3D

[edemaine]

Indeed! Probably this commit: https://github.com/DanielXMoore/Civet/pull/1441/commits/bc49fe964b2c8cca4a35e909c7e5a8a0ae2c3e84 which makes fat arrows treat postfix if like an expressionized statement.