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 @excentone/spfx-property-pane. Try it out:
require("react/package.json"); // react is a peer dependency.
require("react-dom/package.json"); // react-dom is a peer dependency.
require("@fluentui/react/package.json"); // @fluentui/react is a peer dependency.
require("@excentone/spfx-core-lib/package.json"); // @excentone/spfx-core-lib is a peer dependency.
require("@excentone/spfx-utilities/package.json"); // @excentone/spfx-utilities is a peer dependency.
require("@excentone/spfx-value-types/package.json"); // @excentone/spfx-value-types is a peer dependency.
require("@microsoft/sp-property-pane/package.json"); // @microsoft/sp-property-pane is a peer dependency.
var spfxPropertyPane = require("@excentone/spfx-property-pane")
- 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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