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/*
* Copyright (c) 2024 Kristóf Marussy <kristof@marussy.com>
*
* SPDX-License-Identifier: MIT
*/
import { readFile, writeFile } from 'node:fs/promises';
import path from 'node:path';
import { promisify } from 'node:util';
import zlib, { type BrotliOptions, type ZlibOptions } from 'node:zlib';
import pluginSitemap, { type PluginOptions } from '@docusaurus/plugin-sitemap';
import type { LoadContext, Plugin } from '@docusaurus/types';
import { Globby } from '@docusaurus/utils';
import CompressionPlugin from 'compression-webpack-plugin';
const gzipOptions = {
level: 9,
} satisfies ZlibOptions;
const brotliOptions = {
params: {
[zlib.constants.BROTLI_PARAM_QUALITY]: 11,
},
};
const test = /\.(js|css|svg|txt)$/;
const paths = ['**/*.html', 'robots.txt', 'sitemap.xml'];
const gzip = promisify(zlib.gzip);
const brotliCompress = promisify(zlib.brotliCompress);
export default function compressionPlugin(
context: LoadContext,
options: PluginOptions,
): Plugin<void> {
const sitemap = pluginSitemap(context, options);
return {
name: 'marussy-compression-plugin',
configureWebpack: (_config, isServer) =>
isServer
? {}
: {
plugins: [
new CompressionPlugin({
test,
filename: '[path][base].gz',
compressionOptions: gzipOptions,
}),
new CompressionPlugin<BrotliOptions>({
test,
filename: '[path][base].br',
algorithm: 'brotliCompress',
compressionOptions: brotliOptions,
}),
],
},
async postBuild(props) {
await sitemap?.postBuild(props);
const files = await Globby(paths.map((s) => path.join(props.outDir, s)));
for (const file of files) {
console.log(file);
const contents = await readFile(file);
const gzipContents = await gzip(contents, gzipOptions);
await writeFile(`${file}.gz`, gzipContents);
const brotliContents = await brotliCompress(contents, brotliOptions);
await writeFile(`${file}.br`, brotliContents);
}
},
};
}
export { validateOptions } from '@docusaurus/plugin-sitemap';
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