recommend-webpack-4-latest-patch

What This Rule Detects

This rule detects repositories using webpack 4.x at a version below 4.47.

Why It Matters

webpack 4.47 is the final stable release in the 4.x line and includes:

• Performance improvements accumulated across the 4.x lifecycle
• Bug fixes and compatibility updates
• Better tree-shaking and module resolution

Upgrading to 4.47 first is a low-risk step that prepares the codebase for a future webpack 5 migration. It isolates 4.x-specific changes from the larger webpack 5 breaking changes.

Suggested Action

Upgrade webpack to ^4.47.0 in your package.json. Review the webpack 4 changelog for any breaking changes between your current version and 4.47.

Measurement

Compare CI build time before and after the upgrade. Verify that the build output and behavior remain unchanged.

Compatibility Notes

• webpack 4.47 is the last 4.x release and is well-tested
• Most projects can upgrade from 4.x to 4.47 without configuration changes
• After upgrading to 4.47, consider using webpack migrate to prepare for webpack 5