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core-js vs React Router: who uses which

core-js is on more sites: 2,697,064 against 12,141 for React Router, about 222.1 times as many. Here's how they compare across the websites we've indexed, and where each one does best.

Where each one is used

Domaincore-jsReact Router
.com on .com1,737,5646,011
.org on .org168,333298
.uk in the UK119,622191
.de in Germany66,751273
.net on .net65,392198
.au in Australia50,707109
.ca in Canada45,709256
.ch in Switzerland42,04955

23 sites run both at once.

Questions

Which is more popular, core-js or React Router?

core-js is on more sites: 2,697,064 against 12,141 for React Router, about 222.1 times as many, across the sites StackGrep has indexed.

Do sites use core-js and React Router together?

23 sites load both. That's often a switch in progress, or two teams picking different tools.

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