simplify running lambda locally

Author: cemms1

ab-testing/notification-lambda/README.md

@@ -22,6 +22,12 @@ install dependencies:
 
 Call the `run.ts` script (this will send emails to owners of tests which are close to expiry or which have expired in your local [/ab-testing/config/abTests.ts](/ab-testing/config/abTests.ts) file):
 
+```bash
+ pnpm dev
+```
+
+or
+
 ```bash
  node src/run.ts
 ```

ab-testing/notification-lambda/package.json

@@ -5,6 +5,7 @@
 	"main": "index.ts",
 	"type": "module",
 	"scripts": {
+		"dev": "node src/run.ts",
 		"build": "rollup -c rollup.config.js",
 		"test": "node --test --experimental-test-module-mocks --test-reporter spec './**/*.test.ts'",
 		"lint": "eslint .",

ab-testing/notification-lambda/src/run.ts

@@ -9,60 +9,16 @@
  *   - AWS credentials for the frontend account must be configured
  */
 
-import type { CloudFormationCustomResourceEvent, Context } from "aws-lambda";
 import { handler } from "./index.ts";
 
 process.env.EMAIL_DOMAIN = `abtesting.code.dev-gutools.co.uk`;
 
-// Create a mock CloudFormation event
-const mockEvent: CloudFormationCustomResourceEvent = {
-	RequestType: "Create",
-	ServiceToken:
-		"arn:aws:lambda:eu-west-1:123456789012:function:mock-function",
-	ResponseURL:
-		"https://cloudformation-custom-resource-response.s3.amazonaws.com/mock-url",
-	StackId:
-		"arn:aws:cloudformation:eu-west-1:123456789012:stack/mock-stack/mock-id",
-	RequestId: "mock-request-id",
-	LogicalResourceId: "MockResource",
-	ResourceType: "Custom::DictionaryDeployer",
-	ResourceProperties: {
-		ServiceToken:
-			"arn:aws:lambda:eu-west-1:123456789012:function:mock-function",
-	},
-};
-
-// Create a mock Lambda context
-const mockContext: Context = {
-	callbackWaitsForEmptyEventLoop: false,
-	functionName: "ab-testing-notification-lambda-local",
-	functionVersion: "$LATEST",
-	invokedFunctionArn:
-		"arn:aws:lambda:eu-west-1:123456789012:function:mock-function",
-	memoryLimitInMB: "512",
-	awsRequestId: "mock-request-id",
-	logGroupName: "/aws/lambda/ab-testing-notification-lambda-local",
-	logStreamName: "2025/11/19/[$LATEST]mock-stream",
-	getRemainingTimeInMillis: () => 300000,
-	done: () => {},
-	fail: () => {},
-	succeed: () => {},
-};
-
 console.log(`Running lambda handler locally\n`);
 console.log(`EMAIL_DOMAIN=${process.env.EMAIL_DOMAIN}\n`);
 
-// Run the handler
-// Cast to unknown then to the correct function type to work around typing issues
-const runHandler = handler as unknown as (
-	event: CloudFormationCustomResourceEvent,
-	context: Context,
-	callback: () => void,
-) => Promise<void>;
-
 void (async () => {
 	try {
-		await runHandler(mockEvent, mockContext, () => {});
+		await handler();
 		console.log("\n✅ Lambda handler completed successfully");
 		process.exit(0);
 	} catch (error) {