webpack的filename和chunkFilename有什么区别呢?
比较好的理解如下:
Async Chunk => chunkFilename e.g import(/* webpackChunkName: "foo" */ './file.css') => foo.css
Sync Chunk (e.g an Entrypoint) => filename => e.g import styles from './file.css' (in entry.js) => entry.css