npm passes the 1 millionth package milestone! What can we learn?

June 4th is a historic date. Not only is it our very own Liran Tal’s birthday (Mazal Tov, Liran!) but it is also the date that the millionth package was indexed into the npm registry. npm is a package manager for JavaScript packages. The core component of npm is its public registry, hosting JavaScript packages that can be accessed by the npm client to build JavaScript applications.

If you’re a user of npm and are interested in how you can use it more securely, be sure to read our npm security cheatsheet, listing ten top best practices on how to use npm safely.

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A brief history of npm, including security incidents

  • January 2010: npm was created by Isaac Z. Schlueter, written in JavaScript.
  • March 2016: popular JavaScript package, left-pad, was unpublished from the npm repository due to a naming dispute. After much disruption among the JavaScript world, tightened up its unpublishing policy.
  • July 2018: a malicious version of the eslint-scope package was released which exposed npm credentials of users to the attacker.
  • November 2018: the malicious package, flatmap-stream, was released to npm which was added as a dependency to the popular event-stream package. The package targeted Copay the bitcoin wallet.
  • June 4th 2019: npm indexes its one-millionth package.

npm’s top ten packages

The npm website lists its top ten most popular packages. These are as listed below, with vulnerability information included. Interestingly, the request package has seen 17 typosquatting attempts.

lodash3 vulnerabilities (1 high sev)
request1 vulnerability (17 typosquatting attempts)
chalk0 vulnerabilities (1 typosquatting attempt)
react2 vulnerabilities (1 high sev)
express1 vulnerability
commander0 vulnerabilities
moment3 vulnerabilities
debug1 vulnerability
async0 vulnerabilities
prop-types0 vulnerabilities

If we consider popularity as the number of total downloads we can see which libraries are used heavily both as direct and indirect dependencies:

debug>40 million weekly downloads
kind-of>34 million weekly downloads
supports-color>34 million weekly downloads
readable-stream>31 million weekly downloads
source-map>30 million weekly downloads
yargs>27 million weekly downloads
camelcase>26 million weekly downloads
minimist>25 million weekly downloads
strip-ansi>25 million weekly downloads
chalk>25 million weekly downloads

Out of the above 10 packages, only debug was found to contain a security vulnerability.

npm by numbers

The sheer scale of the popularity and growth of npm is staggering as we can see from this graph, showing the number of indexed packages over just the last couple of years. In fact, we see a 250% growth of the platform in just over 2 years, since January 2017.

Even month-by-month the growth of npm usage is visible, as we can see from the number of packages that are downloaded each month in 2019.

Here are some more npm stats:

  • 1 million indexed packages (+ those that have been indexed since this post was written!)
  • 10.9 billion downloads last week
  • 46.9 billion downloads last month
  • The top package is debug and accounts for more than 40 million weekly downloads
  • The 1000th most downloaded package is merge-stream and accounts for about 3.5 million downloads a week
  • 250k packages added to npm in 2018
  • 110k packages added to npm in 2019, so far
  • 144k downloads of the Snyk CLI npm package each week!
  • 41 packages are owned by Snyk, yay!

GitHub user, dominykas, and a friend from NearForm, provided some stats in a GitHub issue as part of some work being done in the Node.js Foundation’s Package Maintenance working group. Their data shows how general package maintenance varies significantly between authors.

PercentileLast commitLast publish
10%4 days old11 days old
20%5 days old37 days old
30%19 days old88 days old
40%57 days old157 days old
50%119 days old246 days old
60%194 days old369 days old
70%328 days old559 days old
80%563 days old777 days old
90%887 days old1098 days old
95%1194 days old1372 days old
100%2201 days old2792 days old


We’d like to send our congratulations to npm for running and maintaining the largest open source language repository, and to the great maintainers and developers in the community who power the ecosystem and assisted in reaching this great achievement. It’s extremely important to make sure that when you use open source packages, you use versions that do not contain known vulnerabilities. It’s straightforward to test your applications for free against the industry-leading Snyk vulnerability database. Try it now, and see the scan results instantly.

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