What is tree shaking in npm?

What is tree shaking in npm?

Tree shaking is a term commonly used in JavaScript development, particularly with npm, to describe the process of eliminating unused code from your final bundle. This helps reduce the size of your application and improve performance.

How does tree shaking work in practice?

Tree shaking works by analyzing the import and export statements in your code. Tools like Webpack or Rollup can identify which parts of your code are actually used and remove the rest during the build process.

Do I need to configure anything for tree shaking to work?

Yes, you typically need to ensure that your code is using ES6 module syntax (import/export) and configure your bundler properly to enable tree shaking.

Can tree shaking be used with all libraries?

Not all libraries support tree shaking. Libraries that are written in CommonJS format may not be tree-shakable, so it's best to use libraries that are designed with ES6 modules.