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 cosmos-router. Try it out:
require("@types/lodash/package.json"); // @types/lodash is a peer dependency.
require("@types/react/package.json"); // @types/react is a peer dependency.
require("@types/react-router-dom/package.json"); // @types/react-router-dom is a peer dependency.
require("react/package.json"); // react is a peer dependency.
require("react-router-dom/package.json"); // react-router-dom is a peer dependency.
require("lodash/package.json"); // lodash is a peer dependency.
require("tslib/package.json"); // tslib is a peer dependency.
var cosmosRouter = require("cosmos-router")
- all documents on RunKit are public
require()any package directly from npm- use arrow functions, classes, template strings, and most of ES6
awaitany promise instead of using callbacks (example)- create your own embedded node.js snippets
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