Explanation of closures via lexical scope
One can easily apply too much or wrong type of curry.
You can quickly verify complex logic if you use structured JSON logging.
An example adding a flexible timeout method to promises
Extend promises returned by $q with timeout method
We can extend objects built from JSON strings by pointing to a different prototype object.
Make constructor functions work without "new" keyword in callbacks.
Combining functions into custom iterator callbacks and using _ will be easier if you put callback function first and data second.
Playing with ES6 generators in Node.