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sockjs is a npm library included in the Tidelift Subscription

Tidelift is working with the maintainers of sockjs and thousands of other projects to deliver commercial support and maintenance for the open source dependencies you use to build your applications.

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About sockjs

SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication.

SockJS defines a set of protocol tests to quarantee a server compatibility with sockjs client library and various browsers.

SockJS has over 4 million downloads per week and is a critical component to the Node ecosystem. Sock JS is used by over 147,000 open source repositories, according to Libraries.io, including popular projects such as React, Storybook, Gatsby, Angular, and Webpack.

Check our our blog post about Sock JS here.

SockJS is available via the npm package manager. Learn more about Sock JS here.

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