<ul><li>Next.js provides built-in support for many core-js methods by default.</li><li>Running 'next build' generates an optimized version of your application for production.</li><li>The project plans to switch from using Babel to SWC as the compiler for Next.js.</li><li>There is an existing dependency on core-js and regenerator-runtime that needs evaluation.</li><li>A step-by-step guide is provided for transitioning from Babel to SWC in Next.js.</li><li>Solution 1 to remove Babel configuration faced issues due to Enzyme dependency.</li><li>Solution 2 involves using SWC for production and development, and Babel for testing.</li><li>Comparisons of bundle size, first load JS, and build time show SWC performing better than Babel.</li><li>To prevent fallback to using Babel, ensure no Babel configuration files are present in the production environment.</li><li>Adding console messages in the configuration files can help identify which compiler is being used.</li></ul>

Switching Next.js Compiler from Babel to SWC

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