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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 promise with all npm packages installed. Try it out:

var promise = require("promise")

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promise v8.3.0

Bare bones Promises/A+ implementation

RunKit is a free, in-browser JavaScript dev environment for prototyping Node.js code, with every npm package installed. Sign up to share your code.
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