build: webpack config for jupyuter lite

package.json

@@ -232,6 +232,7 @@
     "extension": "./lib/jupyterlab/index.js",
     "outputDir": "datalayer/labextension",
     "schemaDir": "schema",
+    "webpackConfig": "./webpack.lab-config.js",
     "sharedPackages": {
       "@jupyter/docprovider": {
         "bundled": true,

webpack.config.js

@@ -112,6 +112,29 @@ module.exports = {
         test: /\.(png|jpg|jpeg|gif|ttf|woff|woff2|eot)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
         use: [{ loader: 'url-loader', options: { limit: 10000 } }],
       },
+      // Ship the JupyterLite service worker.
+      {
+        resourceQuery: /text/,
+        type: 'asset/resource',
+        generator: {
+          filename: '[name][ext]',
+        },
+      },
+      // Rule for pyodide kernel
+      {
+        test: /pypi\/.*/,
+        type: 'asset/resource',
+        generator: {
+          filename: 'pypi/[name][ext][query]',
+        },
+      },
+      {
+        test: /pyodide-kernel-extension\/schema\/.*/,
+        type: 'asset/resource',
+        generator: {
+          filename: 'schema/[name][ext][query]',
+        },
+      }
      ]
   },
   plugins: [

webpack.lab-config.js

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021-2023 Datalayer, Inc.
+ *
+ * MIT License
+ */
+
+module.exports = {
+  module: {
+    rules: [
+      // Rule to deal with the service-worker.ts file
+      // It will include the transpiled file as a text file named `[name][ext]`
+      // That file is available from the static folder of this extension. That
+      // requires to overwrite the `workerUrl` in '@datalayer/jupyter-kernels:browser-service-worker'
+      // see https://github.com/jupyterlite/jupyterlite/blob/1a1bbcaab83f3c56fde6747a8c9b83d3c2a9eb97/packages/server/src/tokens.ts#L5
+      {
+        resourceQuery: /text/,
+        type: 'asset/resource',
+        generator: {
+          // Must match the filename in jupyter_kernels/handlers/service_worker/handler.py
+          filename: 'lite-[name][ext]',
+        },
+      },
+      // Rules for pyodide kernel assets
+      {
+        test: /pypi\/.*/,
+        type: 'asset/resource',
+        generator: {
+          filename: 'pypi/[name][ext][query]',
+        },
+      },
+      {
+        test: /pyodide-kernel-extension\/schema\/.*/,
+        type: 'asset/resource',
+        generator: {
+          filename: 'schema/[name][ext][query]',
+        },
+      },
+    ],
+  },
+};