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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 react-focus-lock. Try it out:
require("@types/react/package.json"); // @types/react is a peer dependency.
require("react/package.json"); // react is a peer dependency.
var reactFocusLock = require("react-focus-lock")
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