Webpack Contenthash Caching

[contenthash] in filenames means a file's name only changes when its content does — so the browser re-downloads only what actually changed. Edit code and watch which hashes move.

1 · Build setup

output uses [contenthash] runtimeChunk: "single" split vendors chunk

2 · Make a change & rebuild

file	built name	browser

Edit something to rebuild and compare hashes.