ローカルテストができるようになった

Author: to-higashiguchi

hello_lambda_ts/package-lock.json

@@ -4,13 +4,15 @@
   "description": "",
   "main": "dist/index.js",
   "scripts": {
+    "start": "ts-node src/index.ts",
     "build": "esbuild src/index.ts --bundle --minify --sourcemap --platform=node --target=node20 --outfile=dist/index.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "devDependencies": {
     "@types/aws-lambda": "^8.10.138",
     "@types/node": "^20.12.12",
     "esbuild": "^0.25.9",
+    "ts-node": "^10.9.2",
     "typescript": "^5.4.5"
   }
-}
+}

hello_lambda_ts/package.json

@@ -8,4 +8,14 @@ export const handler: APIGatewayProxyHandler = async (event, context) => {
       message: 'hello from TypeScript!',
     }),
   };
-};
+};
+
+// スクリプトが直接実行された場合にテストコードを呼び出す
+if (require.main === module) {
+  console.log("--- Running Local Test ---");
+  // @ts-ignore
+  handler({}, {}).then(result => {
+    console.log(JSON.parse(result.body));
+  });
+  console.log("--- End of Local Test ---");
+}