- Clone this repo
yarn installyarn build
There is no dist/vendors~pageA~pageB.js chunk generated, since after the CSS is extracted, there should be no common JS code between the two pages.
A dist/vendors~pageA~pageB.js file is generated, and is only 78 bytes after CSS extraction:
$ webpack
clean-webpack-plugin: C:\Users\Ed\src\testcase-webpack-splitchunks-css\dist has been removed.
Hash: 92762fba701da2f64083
Version: webpack 4.8.3
Time: 988ms
Built at: 2018-05-14 20:24:31
Asset Size Chunks Chunk Names
vendors~pageA~pageB.css 138 KiB 0 [emitted] vendors~pageA~pageB
vendors~pageA~pageB.js 78 bytes 0 [emitted] vendors~pageA~pageB
pageB.js 1.09 KiB 1 [emitted] pageB
pageA.js 1.09 KiB 2 [emitted] pageA
Entrypoint pageA = vendors~pageA~pageB.css vendors~pageA~pageB.js pageA.js
Entrypoint pageB = vendors~pageA~pageB.css vendors~pageA~pageB.js pageB.js
[1] ./src/page-b.js 47 bytes {1} [built]
[3] ./src/page-a.js 47 bytes {2} [built]
+ 2 hidden modules
Child mini-css-extract-plugin node_modules/css-loader/index.js!node_modules/bootstrap/dist/css/bootstrap.min.css:
Entrypoint mini-css-extract-plugin = *
2 modules
The minified file contains:
(window.webpackJsonp=window.webpackJsonp||[]).push([[0],[function(n,w,o){}]]);There seems to be two bugs:
- a file containing only webpack helper functions should be removed/optimized away, but isn't
- the
splitChunks.minSizedefault threshold of 30KB seems to not take into account CSS extraction (ie the size should be measured after extraction).