Kakao My Subscription switches build tool from Webpack to Vite, reducing initial compilation time by 30x

Kakao's subscription service platform 'My Subscription' replaced its build tool with Vite to resolve dependency conflicts caused by the release of React 19 and the maintenance burden of complex Webpack configurations. As a result of the migration, a total of 6 configuration files, including those for Webpack, Babel, and Storybook, were consolidated into 2 (vite.config.js, vite.config.storybook.js), improving manageability. In terms of performance, the initial compilation time became approximately 30 times faster, dropping from an average of 3,012ms to 129ms, significantly enhancing the developer experience (DX). However, there were some migration constraints, such as changes in environment variable handling (process.env → import.meta.env) and the need to explicitly specify JSX file extensions.