Brotli support

[emilbader]

• Operating System: macOS Mojave (10.14.3)
• Node Version: 10.15.2
• NPM Version: 6.4.1
• webpack Version: 4.28.4
• webpack-defaults Version: N/A

Feature Proposal

Node 11.7.0 has native support for Brotli compression in its zlib module.

Feature Use Case

• Smaller files compared to Gzip:

  • credit: https://blog.kowalczyk.info/article/c11d3c20753445618b98d18be5ce037e/zopfli-vs.-brotli-vs.-gzip.html

• Not having to rely on external libraries like iltorb used in brotli-webpack-plugin

[alexander-akait]

Feel free to send a PR

[khalwat]

I'm happy to report that this already "just works" (no need for a PR). You just need to be running Node 11.7.0 or later:

new CompressionPlugin({
        filename: '[path].br[query]',
        algorithm: 'brotliCompress',
        test: /\.(js|css|html|svg)$/,
        compressionOptions: { level: 11 },
        threshold: 10240,
        minRatio: 0.8,
        deleteOriginalAssets: false
    }),
new CompressionPlugin({
        filename: '[path].gz[query]',
        algorithm: 'gzip',
        test: /\.(js|css|html|svg)$/,
        compressionOptions: { level: 9 },
        threshold: 10240,
        minRatio: 0.8,
        deleteOriginalAssets: false
    }),

output:

-rw-rw-r--   1 andrew  staff    61K Mar  9 10:37 vendors~amplitudeplayer.161a2c2f6376e617a7f5.js
-rw-rw-r--   1 andrew  staff   9.0K Mar  9 10:37 vendors~amplitudeplayer.161a2c2f6376e617a7f5.js.br
-rw-rw-r--   1 andrew  staff    10K Mar  9 10:42 vendors~amplitudeplayer.161a2c2f6376e617a7f5.js.gz
-rw-rw-r--   1 andrew  staff    14K Mar  9 10:37 vendors~vuetable.64419ea49293de11cc61.js
-rw-rw-r--   1 andrew  staff   4.5K Mar  9 10:37 vendors~vuetable.64419ea49293de11cc61.js.br
-rw-rw-r--   1 andrew  staff   5.1K Mar  9 10:42 vendors~vuetable.64419ea49293de11cc61.js.gz
-rw-rw-r--   1 andrew  staff    96K Mar  9 10:37 vendors~vue~vueclickaway.6fb24bd01d62bc0ff86c.js
-rw-rw-r--   1 andrew  staff    31K Mar  9 10:37 vendors~vue~vueclickaway.6fb24bd01d62bc0ff86c.js.br
-rw-rw-r--   1 andrew  staff    35K Mar  9 10:42 vendors~vue~vueclickaway.6fb24bd01d62bc0ff86c.js.gz

Additional options can be found here: https://github.com/nodejs/node/blob/master/doc/api/zlib.md#compressor-options

[alexander-akait]

@khalwat can you send a PR to Example section? Thanks!

[khalwat]

@evilebottnawi done -> #119

[ahmad2smile]

Any way to support with npm install brotli for use case when we can't upgrade node version even in build system. I'm on node:8-jessie