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 ui-widget-toolkit. Try it out:
require("ag-grid-community/package.json"); // ag-grid-community is a peer dependency.
require("@angular/core/package.json"); // @angular/core is a peer dependency.
require("pixi.js/package.json"); // pixi.js is a peer dependency.
require("d3/package.json"); // d3 is a peer dependency.
require("react-dom/package.json"); // react-dom is a peer dependency.
require("es6-promise/package.json"); // es6-promise is a peer dependency.
require("@angular/common/package.json"); // @angular/common is a peer dependency.
require("@angular/platform-browser/package.json"); // @angular/platform-browser is a peer dependency.
require("d3-sankey/package.json"); // d3-sankey is a peer dependency.
require("dagre/package.json"); // dagre is a peer dependency.
require("react/package.json"); // react is a peer dependency.
var uiWidgetToolkit = require("ui-widget-toolkit")
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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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