elm/core

modBy runtime error when passing 0 as an argument

Opened this issue · 1 comments

glensargent commented

modBy takes any integer as an input and therefore it's possible (and quite frequent if you're running it on indexes) to attempt to divide by 0 which provides a runtime error:
image

The elm lsp/compiler provides no warning for this and it successfully compiles, which contradicts the 'no runtime exceptions' rule

Easy issue to replicate, just pass 0 in to modBy. I'm unsure if this is intentional behaviour or not but after a day of writing elm it caught me off guard to have my first runtime error

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