diff --git a/src/configure.js b/src/configure.js
index 3f73c42..d6400a2 100644
--- a/src/configure.js
+++ b/src/configure.js
@@ -184,6 +184,12 @@ export default async function configure(options) {
 				included: true,
 				served: true,
 			},
+			{
+				pattern: path.resolve(__dirname, './lib/jest-globals.js'),
+				watched: false,
+				included: true,
+				served: true,
+			},
 		].concat(
 			...files.map((pattern) => {
 				// Expand '**/xx' patterns but exempt node_modules and gitignored directories
diff --git a/src/lib/jest-globals.js b/src/lib/jest-globals.js
new file mode 100644
index 0000000..efe9ef7
--- /dev/null
+++ b/src/lib/jest-globals.js
@@ -0,0 +1,74 @@
+function notImplemented() {
+	throw Error(`Not Implemented`);
+}
+
+// @todo expect.extend() et al
+
+global.jest = {
+	addMatchers(matchers) {
+		jasmine.addMatchers(matchers);
+	},
+	advanceTimersByTime(msToRun) {
+		// _getFakeTimers().advanceTimersByTime(msToRun);
+		notImplemented();
+	},
+	advanceTimersToNextTimer(steps) {
+		// _getFakeTimers().advanceTimersToNextTimer(steps);
+		notImplemented();
+	},
+	autoMockOff: notImplemented,
+	autoMockOn: notImplemented,
+	clearAllMocks: notImplemented,
+	clearAllTimers() {
+		// _getFakeTimers().clearAllTimers();
+		notImplemented();
+	},
+	createMockFromModule(moduleName) {
+		// return this._generateMock(from, moduleName);
+		notImplemented();
+	},
+	deepUnmock: notImplemented,
+	disableAutomock: notImplemented,
+	doMock: notImplemented,
+	dontMock: notImplemented,
+	enableAutomock: notImplemented,
+	fn: jasmine.createSpy,
+	genMockFromModule(moduleName) {
+		// return this._generateMock(from, moduleName);
+		notImplemented();
+	},
+	getRealSystemTime: notImplemented,
+	getTimerCount() {
+		// return _getFakeTimers().getTimerCount();
+		notImplemented();
+	},
+	isMockFunction(fn) {
+		// check if spy/mock
+		notImplemented();
+	},
+	isolateModules: notImplemented,
+	mock: jasmine.createSpy, // @todo check
+	requireActual: require,
+	requireMock: notImplemented,
+	resetAllMocks: notImplemented,
+	resetModuleRegistry: notImplemented,
+	resetModules: notImplemented,
+	restoreAllMocks: notImplemented,
+	retryTimes: notImplemented,
+	runAllImmediates() {
+		notImplemented();
+	},
+	runAllTicks: notImplemented,
+	runAllTimers: notImplemented,
+	runOnlyPendingTimers: notImplemented,
+	runTimersToTime: notImplemented,
+	setMock: notImplemented,
+	setSystemTime(now) {
+		notImplemented();
+	},
+	setTimeout,
+	spyOn: jasmine.createSpy, // @todo check
+	unmock: (mock) => mock.restore(), // @todo check
+	useFakeTimers: notImplemented,
+	useRealTimers: notImplemented,
+};