Add support for setupFiles and snapshotSerializers

README.md

@@ -14,6 +14,7 @@ The lists below are not comprehensive: feel free to [start a discussion](https:/
 - Jest function mocks: `jest.fn`, `jest.spyOn`
 - Inline and external snapshots
 - `--testNamePattern`/`-t`, to only run some specific tests
+- Jest config options: `setupFiles`, `snapshotSerializers`
 
 ### Unsupported Jest features
 

src/worker-runner.js

@@ -32,6 +32,22 @@ export default async function ({
 }) {
   port.postMessage("start");
 
+  const {setupFiles, snapshotSerializers} = test.context.config;
+
+  // https://github.com/facebook/jest/issues/11038
+  for (const setupFile of setupFiles) {
+    const { default: setup } = await import(pathToFileURL(setupFile));
+
+    if (typeof setup === 'function') {
+      await setup();
+    }
+  }
+
+  for (const snapshotSerializer of [...snapshotSerializers].reverse()) {
+    const { default: serializer } = await import(pathToFileURL(snapshotSerializer));
+    snapshot.addSerializer(serializer);
+  }
+
   const testNamePatternRE =
     testNamePattern != null ? new RegExp(testNamePattern, "i") : null;