typer-diff
typer-diff is a library to diff two strings, useful for showing for typing games or for showing differences between two strings. It is a simple library that is easy to use and has no dependencies. It is also very fast and lightweight.
mixin-types
A tiny library providing typing tools for mixin classes and 2 simple JS funcs mixins (mixins and mixinsWith).
typesafe-cli
A simple CLI tool to allow writing Python-like type annotations to JS.
typerio
A simple npm package that writes text character by character.
untyper
a simple typewriter for browser