Rstest Module Federation (Node) Example

Test a local CommonJS remote with @module-federation/rstest, without an HTTP server.

• remote/ builds an ESM library with declarations and uses Rslib's mf format to expose remote/formatPrice and remote/math.
• host/ loads the built container from disk and tests the exposed functions.

What it tests

• Functions exposed by a Node Module Federation remote can be called from an Rstest test without an HTTP server: host/tests/federated-modules.test.ts imports remote/formatPrice and remote/math and checks their results.
• Federated modules are loaded with dynamic import() through their specifiers, so the Module Federation runtime initializes the container first, matching upstream's NodeLocal.dynamic.test.tsx.

Run the example

From host/:

pnpm install
pnpm test

For a remote served over HTTP to a real browser, see the browser example.