Check Packages

A simple and fully customizable React checkbox input component.

Create JSON Schema validator from TypeScript.

HTML Linter based on HTMLMinifier.

Check if your code is running on Travis

Test your internet connection speed and ping using speedtest.net from the CLI

Type checking, for when you only use JavaScript's Good Parts.

Check if your browser has support for date inputs.

Common types, type guards and type checkers.

Synchronously check if a URL exists.

Check whether a package name is available on bower

code > prettier > stylelint > formatted code

Ensures the working directory is clean and that there are no unpulled changes

json-extra gives you a little more power to json files and strings

System health check helpers

JavaScript Standard Style (for React users)

Returns any kind of object's type.

Hotmart JavaScript Style

unist utility to assert nodes

check for updated package.json dependencies

The simplest way for detecting HTML content.