Use jest as dev dependency to test package

babel.config.json

@@ -0,0 +1,13 @@
+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "current"
+        }
+      }
+    ],
+    "@babel/preset-typescript"
+  ]
+}

jest.config.cjs

@@ -0,0 +1,11 @@
+module.exports = {
+  preset: "ts-jest/presets/js-with-babel",
+  testEnvironment: "node",
+  transform: {
+    "^.+\\.[tj]sx?$": "babel-jest",
+  },
+  moduleNameMapper: {
+    "^(\\.{1,2}/.*)\\.js$": "$1",
+  },
+  testMatch: ["**/?(*.)+(test).[tj]s?(x)"],
+};

package.json

@@ -24,7 +24,7 @@
     "predev": "run-s clean",
     "clean": "rm -rf dist",
     "typecheck": "tsc --noEmit",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest"
   },
   "keywords": [
     "aws",
@@ -59,8 +59,16 @@
     "ora": "^6.1.2"
   },
   "devDependencies": {
+    "@babel/core": "^7.24.6",
+    "@babel/preset-env": "^7.24.6",
+    "@babel/preset-typescript": "^7.24.6",
+    "@types/jest": "^29.5.12",
     "@types/node": "^18.11.18",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "js-with-babel": "link:ts-jest/presets/js-with-babel",
     "npm-run-all": "^4.1.5",
+    "ts-jest": "^29.1.4",
     "ts-node": "^10.9.1",
     "tsup": "^6.5.0",
     "typescript": "^4.9.4"