Shopify/batman — comment on commit 7f687a26995c70d663c25371c60a587721719d7c
File: tests/batman/model/encoders_test.coffee line 72
By nciagra:

This really exemplifies why we can't allow this. Having to write a hash with a single key quoted looks weird. You could quote every key, then it looks less weird, but now we have this nasty requirement. My point is, I think all keys should be valid JavaScript. If you really, REALLY have to have some weird key in your app, you can do it (and always use get/set/quoted keys), but we don't need to build support for that into the framework.