tslib
Runtime library for TypeScript helper functions
serialize-javascript
Serialize JavaScript to a superset of JSON that includes regular expressions and functions.
prelude-ls
prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.
is-what
JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.