LabelingSystem/web/apps/lq_label/webpack.config.js

const { composePlugins, withNx } = require('@nx/webpack');
const { withReact } = require('@nx/react');
const webpack = require('webpack');

const css_prefix = 'lsf-';

// Nx plugins for webpack.
module.exports = composePlugins(
  withNx({
    // Skip TypeScript type checking during build to avoid UI library type errors
    skipTypeChecking: true,
  }),
  withReact({
    // Uncomment this line if you don't want to use SVGR
    // See: https://react-svgr.com/
    // svgr: false
  }),
  (config) => {
    // Enable WebAssembly support
    config.experiments = {
      ...config.experiments,
      asyncWebAssembly: true,
      syncWebAssembly: true,
      topLevelAwait: true,
    };

    // Add fallbacks for Node.js core modules
    config.resolve = {
      ...config.resolve,
      fallback: {
        ...config.resolve.fallback,
        path: false,
        fs: false,
        crypto: false,
        stream: false,
        buffer: false,
        util: false,
        process: false,
      },
      // Provide empty module for problematic audio decoder
      alias: {
        ...config.resolve.alias,
        '@humansignal/audio-file-decoder': require.resolve('./src/utils/empty-module.js'),
      },
    };

    // Ignore source map warnings and module not found errors
    config.ignoreWarnings = [
      /Failed to parse source map/,
      /export .* was not found/,
      /Can't resolve 'a'/,
      /decode-audio\.wasm/,
      /audio-file-decoder/,
      /Critical dependency: the request of a dependency is an expression/,
    ];

    // Add plugins
    config.plugins = [
      ...config.plugins,
      // Replace audio decoder with empty module
      new webpack.NormalModuleReplacementPlugin(
        /@humansignal\/audio-file-decoder/,
        require.resolve('./src/utils/empty-module.js')
      ),
      // Ignore specific modules that cause issues
      new webpack.IgnorePlugin({
        resourceRegExp: /^\.\/locale$/,
        contextRegExp: /moment$/,
      }),
      // Define CSS_PREFIX for LabelStudio
      new webpack.DefinePlugin({
        'process.env.CSS_PREFIX': JSON.stringify(css_prefix),
      }),
    ];

    // Configure CSS modules with lsf- prefix for LabelStudio editor styles
    config.module.rules.forEach((rule) => {
      const testString = rule.test?.toString() || '';
      const isScss = testString.includes('scss');
      const isCssModule = testString.includes('.module');

      if (rule.test?.toString().match(/scss|sass/) && !isCssModule) {
        const r = rule.oneOf?.filter((r) => {
          // we don't need rules that don't have loaders
          if (!r.use) return false;

          const testString = r.test?.toString() || '';

          // we also don't need css modules as these are used directly
          // in the code and don't need prefixing
          if (testString.match(/module|raw|antd/)) return false;

          // we only target pre-processors that has 'css-loader included'
          return testString.match(/scss|sass/) && r.use.some((u) => u.loader && u.loader.includes('css-loader'));
        });

        r?.forEach((_r) => {
          const cssLoader = _r.use.find((use) => use.loader && use.loader.includes('css-loader'));

          if (!cssLoader) return;

          const isSASS = _r.use.some((use) => use.loader && use.loader.match(/sass|scss/));

          if (isSASS) _r.exclude = /node_modules/;

          if (cssLoader.options) {
            cssLoader.options.modules = {
              localIdentName: `${css_prefix}[local]`, // Add lsf- prefix
              getLocalIdent(_ctx, _ident, className) {
                if (className.includes('ant')) return className;
              },
            };
          }
        });
      }
    });

    // Add rule for XML files and WASM
    config.module = {
      ...config.module,
      rules: [
        ...config.module.rules,
        {
          test: /\.xml$/,
          type: 'asset/source',
        },
        {
          test: /\.wasm$/,
          type: 'webassembly/async',
        },
      ],
    };

    return config;
  }
);