React Native は(デフォルトでは) Tree Shaking をサポートしない

Published: 2023/9/29

React Native (のデフォルト bundler である Metro bundler) は、 Tree Shaking をサポートしていない。

Does React Native perform Tree Shaking?

I am trying to weigh up the benefits of converting moment to date-fns. Moment is currently 316k or 67.6k gzipped. date-fns/format is 3k. We deliver updates through CodePush so minimising the

stackoverflow.com

Tree Shaking を行いたい場合などは、 webpack ベースで React Native のバンドリングを行う Re.Pack などのツールを使うのが、スジが良さそうである。

Re.Pack

A Webpack-based toolkit to build your React Native application with full support of Webpack ecosystem.

re-pack.netlify.app

参考スレッド

Tree shaking while bundling · Issue #227 · facebook/metro

Is it possible anyhow to implement tree shaking during bundling. Suppose I have a file say greetings.js: export const sayHi = (name) => {return `Jarvis says hi to ${name}`}; export const sayBye = (...

github.com