diff --git a/babel.config.cjs b/babel.config.cjs
new file mode 100644
index 0000000..f5c1c3c
--- /dev/null
+++ b/babel.config.cjs
@@ -0,0 +1,3 @@
+module.exports = {
+  presets: [['@babel/preset-env', { targets: { node: 'current' } }]]
+}
diff --git a/jest.config.cjs b/jest.config.cjs
new file mode 100644
index 0000000..4db7402
--- /dev/null
+++ b/jest.config.cjs
@@ -0,0 +1,8 @@
+module.exports = {
+  transform: {
+    '^.+\\.svelte$': 'svelte-jester',
+    '^.+\\.js$': 'babel-jest',
+    '^.+\\.ts$': 'ts-jest',
+  },
+  moduleFileExtensions: ['js', 'ts', 'svelte'],
+}
diff --git a/package.json b/package.json
index 57097da..5181cee 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,8 @@
     "check": "svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-check --tsconfig ./tsconfig.json --watch",
     "lint": "prettier --ignore-path .gitignore --check --plugin-search-dir=. . && eslint --ignore-path .gitignore .",
-    "format": "prettier --ignore-path .gitignore --write --plugin-search-dir=. ."
+    "format": "prettier --ignore-path .gitignore --write --plugin-search-dir=. .",
+    "test": "jest"
   },
   "peerDependencies": {
     "svelte": "^3.44.0"