Webpack Docs - Lazy Loading

SplitChunksPlugin

• When using dynamic imports, chunkFilename determines the name of non-entry chunk files
• Since webpack 4, when importing a CommonJS module, the import will no longer resolve to the value of module.exports, it will instead create an artificial namespace object for the CommonJS module, and module.exports is treated as the default export
• The webpackChunkName comment tells webpack what to call your dynamically loaded import when it creates a chunk for it
• Lazy loading occurs when you dynamically import something at a later time rather than up front. For example, you wait to load a larger bundle until the user clicks a button
• Lazy-loaded files that depend on additional third-party packages will also result in a vendors bundle being created for those packages