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Node.js

npm install bluebird

Then:

var Promise = require("bluebird");

Browsers

(See also Installation.)

There are many ways to use bluebird in browsers:

When using script tags the global variables Promise and P (alias for Promise) become available. Bluebird runs on a wide variety of browsers including older versions. We'd like to thank BrowserStack for giving us a free account which helps us test that.