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next.config.js
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next.config.js
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const webpack = require('webpack');
const pkg = require('./package.json');
const withTM = require('next-transpile-modules');
const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
const { findPages } = require('./docs/src/modules/utils/find');
const withTypescript = require('@zeit/next-typescript');
const LANGUAGES = ['en', 'zh', 'ru', 'pt', 'fr', 'es', 'de'];
module.exports = withTypescript({
webpack: (config, options) => {
// Alias @material-ui/core peer dependency imports form the following modules to our sources.
config = withTM({
transpileModules: ['notistack', '@material-ui/pickers', 'material-table'],
}).webpack(config, options);
const plugins = config.plugins.concat([
new webpack.DefinePlugin({
'process.env': {
LIB_VERSION: JSON.stringify(pkg.version),
},
}),
]);
if (process.env.DOCS_STATS_ENABLED) {
plugins.push(
// For all options see https://github.com/th0r/webpack-bundle-analyzer#as-plugin
new BundleAnalyzerPlugin({
analyzerMode: 'server',
generateStatsFile: true,
// Will be available at `.next/stats.json`
statsFilename: 'stats.json',
}),
);
}
config.resolve.alias['react-dom$'] = 'react-dom/profiling';
config.resolve.alias['scheduler/tracing'] = 'scheduler/tracing-profiling';
return Object.assign({}, config, {
plugins,
node: {
fs: 'empty',
},
module: Object.assign({}, config.module, {
rules: config.module.rules.concat([
{
test: /\.(css|md)$/,
loader: 'emit-file-loader',
options: {
name: 'dist/[path][name].[ext]',
},
},
{
test: /\.(css|md)$/,
loader: 'raw-loader',
},
]),
}),
});
},
webpackDevMiddleware: config => config,
// Next.js provides a `defaultPathMap` argument, we could simplify the logic.
// However, we don't in order to prevent any regression in the `findPages()` method.
exportPathMap: () => {
const pages = findPages();
const map = {};
function traverse(pages2, userLanguage) {
const prefix = userLanguage === 'en' ? '' : `/${userLanguage}`;
pages2.forEach(page => {
if (!page.children) {
map[`${prefix}${page.pathname}`] = {
page: page.pathname,
query: {
userLanguage,
},
};
return;
}
traverse(page.children, userLanguage);
});
}
// We want to speed-up the build of pull requests.
if (process.env.PULL_REQUEST === 'true') {
traverse(pages, 'en');
} else {
LANGUAGES.forEach(userLanguage => {
traverse(pages, userLanguage);
});
}
return map;
},
onDemandEntries: {
// Period (in ms) where the server will keep pages in the buffer
maxInactiveAge: 120 * 1e3, // default 25s
// Number of pages that should be kept simultaneously without being disposed
pagesBufferLength: 3, // default 2
},
});