- Upgrade to Nuxt 2 with Webpack 4, full ESM support, Babel 7 and new runtime options (nuxt start, nuxt legacy).
- Breaks existing configs: adjust import/export in nuxt.config.js, update asset paths to .nuxt/dist/client, and remove vendor/DLL settings.
- Adds many features (watchQuery, server middleware watchers, HTTPS/unix sockets, postcss preset env) and deprecates vendor array and render.gzip, while improving security via client/server artifact isolation.