potemkin

import-vars allows functions, macros, and values to be defined in one namespace and exposed in another, solving the conflation of code layout and API design as described in the README for larger libraries like Ring.

def-map-type reduces custom map implementation to just six core functions (get, assoc, dissoc, keys, meta, with-meta) instead of dozens of interfaces, as shown in the LazyMap example.

defprotocol+ only creates new protocol instances when the body changes, preventing No implementation method exceptions during REPL reloads, a common pain point in vanilla Clojure.

definterface+ uses the same convention as defprotocol but generates interfaces for better performance and primitive argument support, addressing overhead issues highlighted in linked benchmarks.