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 karma-polymer-test. Try it out:
require("karma-chai/package.json"); // karma-chai is a peer dependency.
require("karma-mocha/package.json"); // karma-mocha is a peer dependency.
require("karma-detect-browsers/package.json"); // karma-detect-browsers is a peer dependency.
var karmaPolymerTest = require("karma-polymer-test")
- 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
This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.