Compared to Github’s 40 million developers and 100 million managed code, npm is also more than a quarter of the size by number of developers.
The exact amount of the acquisition was not disclosed. But the way the two developer communities announced their “marriage” was also special, with the two bosses posting a blog each to get a glimpse of the different moods.
Excitement and kindness
GitHub CEO Nat Friedman, who is clearly no stranger to acquisitions, has been looking for Nat as CEO since Microsoft’s $7.5 billion acquisition of GitHub in June 2018 and Nat’s appointment as CEO in October.
Above, GitHub CEO Nat Friedman
During this time, Nat was constantly acquiring and stocking up, first Withabot, a tool that helps developers monitor dependencies, then Pull Panda, a team-developing tool, and then Semmle, a semantic analytics engine that identifies security vulnerabilities through community-driven. To npm, it is already the fourth target.
With a rich father, from then on two into a family. Github hosts code under development, and npm is packaged stable code, which is a perfect match. This addresses the important global issue of open source security, which, with better integration, can improve the security of the open source supply chain, allowing developers to track changes from requests pulled from GitHub to fixing its npm package version, Nat said.
For paid users, npm has Premium, Team, Enterprise customers, while Github has its own multilingual package manager, Github Packages, which will converge later this year.
Isaac Z. Schlueter, npm’s founder, has published an exhilarating and sentimental blog compared to Nat Bowen. 
Above, npm founder Isaac Schluiter
Even in 2012, when Ryan Dahl, the founder of Node.js, left, Isaac helped manage it for a while. They were both colleagues at Joyent in San Francisco.
It’s really not easy to work while maintaining the open source community. At the end of 2013, when npm was in trouble and the community could n’or Greal is unable to survive on donations, Isaac founded npm, Inc., in 2014 to support the community and more than 10 million users.
After the seed round, npm added another $8 million Round of A in 2015. The team increased from 1 to 35. Isaac says running a company is hard, and money has never been enough.
Once the acquisition is complete, npm will continue to improve and will be a strategic asset to GitHub, the world’s largest developer community, serving GitHub’s mission to eliminate transaction costs in software development.
Wired magazine commented that Microsoft will soon be controlling more open source software development ecosystems.
In the open source world, ecology, tools and communities are complex, after all, no one wants to reinvent the wheel. Developers often combine programs and open source packages to handle common functions such as password verification or network communication.
npm’s customers include both individual developers and fortune 500 companies such as Netflix, VISA, Adobe, salesforce, and Nike.
Node.js’ open source libraries, mostof hosted at npm, form a strong developer ecosystem, including community activities such as NodeConf.
Microsoft Family Bucket
The world open source is a family, now my father called Microsoft.
On the Reddit forum, various comments also blew up. 
Some netizens believe that this is a win-win for Microsoft and open source, Microsoft’s Azure can provide better services. Microsoft missed out on a mobile platform, and cloud computing is the next computing platform. Microsoft has a 40-year record of attracting developers.
Some netizens believe that more than half of the development kits on hand are provided by Microsoft, including GitHub, npm, VS Code, TypeScript, a company monopolizing the developer world is not a good thing.
Some netizens believe that the negative impression of Microsoft is too long, and that this is out of date, microsoft is now the biggest contributor to open source software, much more open than any company including Google, Amazon, Apple, Oracle, IBM.