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core-js is a npm library with a maintainer paid by Tidelift

The maintainers of core-js get paid by Tidelift to implement industry-leading secure software development practices and document the practices they follow.

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Thanks to maintainers working on projects like core-js, you can use Tidelift to give your teams access to a continuously curated stream of validated data about vetted components they need to make intelligent decisions, faster.

You can feel confident bringing core-js into your application’s dependency tree because the maintainers of core-js are paid by Tidelift to ensure their open source projects follow standardized secure software development practices.

core-js is a part of the Tidelift Subscription

npm core-js is a modular standard library for JavaScript. npm-core-js includes polyfills for ECMAScript up to 2019: promises, symbols, collections, iterators, typed arrays, many other features, ECMAScript proposals, some cross-platform WHATWG / W3C features and proposals like URL. You can load only required features or use it without global namespace pollution.

According to npm, core-js has over 15 million downloads a week and has over 16,000 projects depending on it.

The maintainers of core-js and the maintainers of thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use.

You can learn more about core-js on the project repo.

Proactively reduce your organization’s reliance on bad packages

Tidelift takes a unique, data driven approach to addressing the issue of bad packages. Tidelift partners with the maintainers of thousands of the most-relied-upon open source packages and pays them to implement industry-leading secure software development practices and document the practices they follow. The result is a unique source of cross-ecosystem package intelligence that customers use to identify and eliminate bad packages.

Tidelift’s package intelligence can be easily integrated into your preferred workflows using our flexible APIs or by adopting our web UI and CLI capabilities.

Learn more about Tidelift’s partnership with open source maintainers

The Tidelift maintainer advantage

Tidelift is the only company that partners with open source maintainers and pays them to: 
Implement industry-leading secure software development practices and validate the practices they follow so organizations can have the same confidence in the security of their open source that they have in their own code.
Contractually commit to continue these practices into the future so that organizations can confidently make long term investments in the packages they use.
Learn more
jackson-databind

jackson-databind

Maintainer Tatu Saloranta used income from Tidelift and its customers to completely rearchitect jackson-databind and eliminate the risk of RCE vulnerabilities.
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minimist

Maintainer Jordan Harband saved minimist from deletion when its maintainer decided to delete their projects from GitHub.
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urllib3

urllib3

Maintainer Seth Michael Larson was able to substantially improve urllib3 security practices thanks to income from Tidelift and its customers.
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sockjs

SockJS

When SockJS maintainer Bryce Kahle took a new job that didn’t involve JavaScript, Asif Saif Uddin stepped in as maintainer, ensuring the project wasn’t abandoned.
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Pillow: a Tidelift maintainer case story

Pillow

Maintainer Jeffrey A. Clark  significantly improved security practices used to maintain Pillow, a popular Python Image Library package downloaded 3 million times a day.
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Jordan Harband

Maintainer Jordan Harband used income from Tidelift and its customers to consistently maintain over 450 JavaScript packages during good times and bad.
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mongoose

Mongoose

Maintainer Valeri Karpov of Mongoose implemented additional secure development practices and significantly improved the project’s OpenSSF scorecards score.
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Apache Commons

Apache Commons

Maintainer Gary Gregory of Apache Commons used income from Tidelift and its customers to carve out  time to create a more robust security review process.
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Additional resources

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How to reduce your organization's reliance on "bad" open source packages

Improve the overall health and resilience of the open source you rely on so you can reduce the chances of being impacted by the next xz utils backdoor or Log4Shell.

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The 2023 Tidelift state of the open source maintainer report

Check out the new state of the open source maintainer report which included 11 key headlines coming out of our new survey of over 300 open source maintainers.

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Gartner Hype Cycle for Open Source Sofware 2023

Tidelift mentioned in the Gartner hype cycle for open source software.

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