After seeing this post pooh-poohing the new syntax for Symbols as Hash literal keys, I searched around to see if there were any automatic converters for this change. I was surprised to find there are not!
This is the sort of change Laser will be able to do in its sleep, and I've got a local branch presently which performs this conversion. However, Laser currently has a long startup time. Until I switch it to using autoload (which is nontrivial given how Laser bootstraps) I figured I'd whip this one up as a separate gem. Plus, it gave me another chance to use the object_regex gem we developed.
So head on over to hash_syntax and give it a spin. I'll be updating it if this change (the second half of the post) ends up happening, which I personally agree with. In essence, it would generalize the foo: bar syntax to allow quoted symbols, which has come up for me in the past:
{ foo: bar, :"to-19" => baz }
could become
{ foo: bar, "to-19": baz }
if a patch lands.
See the readme for usage, but it's as simple as running this command in a project root:
hash_syntax --to-18
or
hash_syntax --to-19
Anyway, check out hash_syntax. Make a fresh commit before you use it just in case!

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