feat(calendar-web): add Rollup configuration for modern client support

Author: samuelreichert

packages/pluggableWidgets/calendar-web/rollup.config.mjs

@@ -0,0 +1,31 @@
+import commonjs from "@rollup/plugin-commonjs";
+
+export default args => {
+    const result = args.configDefaultConfig;
+    return result.map(config => {
+        config.output.inlineDynamicImports = true;
+        if (config.output.format !== "es") {
+            return config;
+        }
+        return {
+            ...config,
+            plugins: [
+                ...config.plugins.map(plugin => {
+                    if (plugin && plugin.name === "commonjs") {
+                        // replace common js plugin that transforms
+                        // external requires to imports
+                        // this is needed in order to work with modern client
+                        return commonjs({
+                            extensions: [".js", ".jsx", ".tsx", ".ts"],
+                            transformMixedEsModules: true,
+                            requireReturnsDefault: "auto",
+                            esmExternals: true
+                        });
+                    }
+
+                    return plugin;
+                })
+            ]
+        };
+    });
+};