RunKit + 
Try any Node.js package right in your browser
This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including mad-utils. Try it out:
require("@types/react/package.json"); // @types/react is a peer dependency.
require("@types/react-dom/package.json"); // @types/react-dom is a peer dependency.
require("express/package.json"); // express is a peer dependency.
require("moment/package.json"); // moment is a peer dependency.
require("pretty-error/package.json"); // pretty-error is a peer dependency.
require("react/package.json"); // react is a peer dependency.
require("react-dom/package.json"); // react-dom is a peer dependency.
var madUtils = require("mad-utils")
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awaitany promise instead of using callbacks (example)- create your own embedded node.js snippets
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