Yarn : Fast, reliable, and secure dependency management tool for javascript.
tracing-framework : Rich tools for instrumenting, analyzing, and visualizing web apps.
Prepack : Prepack is a tool that optimizes JavaScript source code: Computations that can be done at compile-time instead of run-time get eliminated. Prepack rep...
A JavaScript Code Quality Tool. JSHint is a tool that helps to detect errors and potential problems in your JavaScript code.