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What is core built with?

core is a TypeScript repo. It makes its content with parse5 and pixelmatch and is tested with Puppeteer and Jest. It has 180,037 written lines, with 1,020 test files.

Read on November 10, 2026, at commit bb880de. Read it as markdown

Frontend

Styles 5

Interface 1

Support

Content 2

Testing 2

  • Puppeteer9 files
  • Jest4 files

Tools 9

  • TypeScript101 files
  • rollup28 files
  • glob2 files
  • terser2 files
  • @yarnpkg/lockfile1 file
  • Ionic1 file
  • Prettier1 file
  • magic-string5 files
  • merge-source-map1 file

Other 7

  • SemVer4 files
  • node-fetch1 file
  • graceful-fs9 files
  • minimatch2 files
  • ansi-colors1 file
  • open1 file
  • ws1 file

Other repos with a similar stack

Ordered by how much of its stack they share with core, then by stars.

Frequently asked questions

What language is core written in?
core is written in TypeScript, with 180,037 written lines.
Does core have tests?
Yes. core has 1,020 test files and is tested with Puppeteer and Jest.
Which repos have a stack like core's?
The ones that share most of its stack:HumanSignal/label-studioshadcn-ui/uigatsbyjs/gatsby

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