Comment by tuukkah
5 years ago
Can you give an example of tooling that is not compatible with encountering the $: label? I can only think of a linter complaining about an unused label "$" or a redefined label "$".
Compare this e.g. with how React linting has to know which functions are actually (custom) hooks, and they cannot have any idea about the semantics of custom hooks.
I'm sure it will let you make that label, but it won't be able to make any sense of it. Maybe I was slightly wrong that only syntax highlighting will be helped by the "standard" syntax, but the point remains that none of the (existing) tooling can properly make sense of those parts of the code. That $ isn't really a label, it's a reaction, which your linter knows nothing about and can't help you with; at best it can "work around" it.