Here’s a summary of the Webpack guide on Code Splitting:

Overview

• Code splitting is a technique used to divide your application’s code into smaller chunks. This method helps improve application performance by optimizing loading times.

Key Concepts

1. Dynamic Imports

• Definition: Use import() syntax to load modules asynchronously.
• Benefit: Facilitates code splitting at logical breakpoints allowing modules to load only when required.
• Example:

  import(/* webpackChunkName: "myChunk" */ './myModule').then(module => {
      // Use the loaded module
  });

2. Lazy Loading

• Definition: Only load code when it is needed, enhancing user experience and minimizing initial load times.
• Implementation: Typically executed through dynamic imports, allowing modules to load in response to user actions (e.g., button clicks).
• Example: A route-based lazy loading in a web app can delay fetching a component until the user navigates to that route.

3. Tree Shaking

• Definition: A method to eliminate unused code based on the static structure of ES2015 (ES6) modules.
• Benefit: Reduces the size of the final output bundle by removing unnecessary code that isn’t used in the application.
• Implementation: Ensure that modules are structured correctly and that you’re using ES module syntax.

Additional Resources

For more detailed exploration, consider checking out:

• Lazy Loading Guide
• Tree Shaking Guide

This fundamental understanding of code splitting can significantly enhance the performance of your applications when properly implemented. Would you like to dive deeper into any of these concepts, or do you have any specific areas you’re interested in exploring further?