diff --git a/package.json b/package.json
index 85fa378a..4832b66d 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,21 @@
   "license": "MIT",
   "main": "dist/cjs/index.js",
   "module": "dist/esm/index.js",
-  "types": "dist/ts/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./dist/esm/index.js",
+      "require": "./dist/cjs/index.js",
+      "types": "./dist/ts/index.d.ts"
+    },
+    "./is-test-runner": {
+      "import": "./dist/esm/is-test-runner.mjs",
+      "require": "./dist/cjs/is-test-runner.cjs"
+    },
+    "./package.json": "./package.json"
+  },
+  "bin": {
+    "test-storybook": "./bin/test-storybook.js"
+  },
   "files": [
     "bin",
     "dist/**/*",
@@ -30,8 +44,8 @@
   "scripts": {
     "clean": "rimraf ./dist",
     "buildBabel": "concurrently \"yarn buildBabel:cjs\" \"yarn buildBabel:esm\"",
-    "buildBabel:cjs": "babel ./src -d ./dist/cjs --extensions \".js,.jsx,.ts,.tsx\"",
-    "buildBabel:esm": "babel ./src -d ./dist/esm --env-name esm --extensions \".js,.jsx,.ts,.tsx\"",
+    "buildBabel:cjs": "babel ./src -d ./dist/cjs --extensions \".js,.jsx,.ts,.tsx,.cjs,.mjs\"",
+    "buildBabel:esm": "babel ./src -d ./dist/esm --env-name esm --extensions \".js,.jsx,.ts,.tsx,.cjs,.mjs\"",
     "buildTsc": "tsc --declaration --emitDeclarationOnly --outDir ./dist/ts",
     "prebuild": "yarn clean",
     "build": "concurrently \"yarn buildBabel\" \"yarn buildTsc\"",
@@ -52,9 +66,6 @@
     "generate-dynamic-stories": "node scripts/generate-dynamic-stories.js",
     "prepare": "husky install"
   },
-  "bin": {
-    "test-storybook": "./bin/test-storybook.js"
-  },
   "devDependencies": {
     "@auto-it/released": "^10.37.1",
     "@babel/cli": "^7.12.1",
diff --git a/src/is-test-runner/is-test-runner.cjs b/src/is-test-runner/is-test-runner.cjs
new file mode 100644
index 00000000..2bbabd78
--- /dev/null
+++ b/src/is-test-runner/is-test-runner.cjs
@@ -0,0 +1,8 @@
+/**
+ * Returns whether the story is rendering inside of the Storybook test runner.
+ */
+module.exports = {
+  isTestRunner: function () {
+    return process?.env?.STORYBOOK_TEST_RUNNER === 'true';
+  }
+}
diff --git a/src/is-test-runner.ts b/src/is-test-runner/is-test-runner.mjs
similarity index 58%
rename from src/is-test-runner.ts
rename to src/is-test-runner/is-test-runner.mjs
index eb546e12..1907dec4 100644
--- a/src/is-test-runner.ts
+++ b/src/is-test-runner/is-test-runner.mjs
@@ -2,12 +2,9 @@
  * Returns whether the story is rendering inside of the Storybook test runner.
  */
 export function isTestRunner() {
-  const isTestRunnerInNode = process?.env?.STORYBOOK_TEST_RUNNER === 'true';
-  const isTestRunnerInBrowser = !!(
+  return!!(
     typeof window !== 'undefined' &&
     window &&
     window.navigator.userAgent.match(/StorybookTestRunner/)
   );
-
-  return isTestRunnerInNode || isTestRunnerInBrowser;
 }