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add datadog exampes (#602)
* add examples for datadog * rename cdk folder and add it to repo * fix config path * unused file
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‎examples/datadog-zip/.gitignore

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cdk.out
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node_modules

‎examples/datadog-zip/README.md

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# Datadog support for Lambda Web Adapter
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This folder contains examples using Lambda Web Adapter and Datadog instrumentation in nodejs (expressjs) using a zipfile and layers instead of a container.
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The examples use aws cdk to deploy and curl to test, so make sure they are installed.
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# How to use
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Instructions are for expressjs
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## Install dependencies
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Install aws cdk dependencies
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```sh
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cd expressjs/cdk
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npm i
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cd -
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```
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## Deploy and Run
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Deploy with
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```sh
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cd expressjs/cdk
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cdk deploy
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cd -
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```
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After confirming the deployment, a log will show a public Lambda URL to invoke the endpoint with
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```sh
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Outputs:
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lwa-stack.LambdaFunctionUrl = https://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.lambda-url.us-east-1.on.aws/
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```
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and the function can be invoked with (note the call_lwa at the end of the URL)
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```sh
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curl https://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.lambda-url.us-east-1.on.aws/call_lwa
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```
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NB
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this deployment will create a publicly accessible URL link with no security restriction and usage limits! Make sure to run
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```sh
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cd expressjs/cdk
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cdk destroy
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cd -
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```
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after the example test is done

‎examples/datadog-zip/expressjs/cdk/README.md

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# Welcome to your CDK TypeScript project
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This is a blank project for CDK development with TypeScript.
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The `cdk.json` file tells the CDK Toolkit how to execute your app.
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## Useful commands
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* `npm run build` compile typescript to js
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* `npm run watch` watch for changes and compile
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* `npm run test` perform the jest unit tests
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* `npx cdk deploy` deploy this stack to your default AWS account/region
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* `npx cdk diff` compare deployed stack with current state
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* `npx cdk synth` emits the synthesized CloudFormation template

‎examples/datadog-zip/expressjs/cdk/app/cdk.ts

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import { App, CfnOutput, Duration, Stack, StackProps } from "aws-cdk-lib";
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import * as lambda from "aws-cdk-lib/aws-lambda";
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import { FunctionUrlAuthType, Code } from "aws-cdk-lib/aws-lambda";
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import * as path from "path";
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const app = new App();
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class LwaStack extends Stack {
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constructor(scope: App, id: string, props?: StackProps) {
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super(scope, id, props);
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const lwa_lambda = new lambda.Function(this, id, {
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code: Code.fromAsset(path.join(__dirname, "../../lambda-asset/src")),
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runtime: lambda.Runtime.NODEJS_20_X,
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handler: "run.sh",
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functionName: id + "-lambda",
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timeout: Duration.seconds(9),
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});
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const functionUrl = lwa_lambda.addFunctionUrl({
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authType: FunctionUrlAuthType.NONE,
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});
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new CfnOutput(this, "LambdaFunctionUrl", {
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value: functionUrl.url,
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description: "The Lambda Function URL",
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});
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lwa_lambda.addEnvironment(
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"AWS_LWA_LAMBDA_RUNTIME_API_PROXY",
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"127.0.0.1:9002",
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);
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lwa_lambda.addEnvironment("DD_TRACE_PARTIAL_FLUSH_MIN_SPANS", "1");
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lwa_lambda.addEnvironment("DD_TRACE_PARTIAL_FLUSH_ENABLED", "false");
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lwa_lambda.addEnvironment("DD_API_KEY", process.env.DD_API_KEY || "");
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lwa_lambda.addEnvironment("DD_SERVICE", id);
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lwa_lambda.addEnvironment("AWS_LAMBDA_EXEC_WRAPPER", "/opt/bootstrap");
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const lwa_lambda_layer = lambda.LayerVersion.fromLayerVersionArn(
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this,
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"lwa_lambda-layer",
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"arn:aws:lambda:us-east-1:753240598075:layer:LambdaAdapterLayerX86:25",
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);
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const dd_layer = lambda.LayerVersion.fromLayerVersionArn(
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this,
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"lwa_lambda-dd-layer",
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"arn:aws:lambda:us-east-1:464622532012:layer:Datadog-Extension:77",
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);
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lwa_lambda.addLayers(lwa_lambda_layer, dd_layer);
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}
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}
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new LwaStack(app, "lwa-stack", {});

‎examples/datadog-zip/expressjs/cdk/cdk.context.json

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{
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"acknowledged-issue-numbers": [
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32775
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]
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}

‎examples/datadog-zip/expressjs/cdk/cdk.json

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{
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"app": "npx ts-node --prefer-ts-exts app/cdk.ts",
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"watch": {
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"include": ["**"],
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"exclude": [
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"README.md",
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"cdk*.json",
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"**/*.d.ts",
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"**/*.js",
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"tsconfig.json",
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"package*.json",
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"yarn.lock",
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"node_modules",
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"test"
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]
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},
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"context": {
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"@aws-cdk/aws-lambda:recognizeLayerVersion": true,
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"@aws-cdk/core:checkSecretUsage": true,
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"@aws-cdk/core:target-partitions": ["aws", "aws-cn"],
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"@aws-cdk-containers/ecs-service-extensions:enableDefaultLogDriver": true,
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"@aws-cdk/aws-ec2:uniqueImdsv2TemplateName": true,
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"@aws-cdk/aws-ecs:arnFormatIncludesClusterName": true,
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"@aws-cdk/aws-iam:minimizePolicies": true,
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"@aws-cdk/core:validateSnapshotRemovalPolicy": true,
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"@aws-cdk/aws-codepipeline:crossAccountKeyAliasStackSafeResourceName": true,
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"@aws-cdk/aws-s3:createDefaultLoggingPolicy": true,
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"@aws-cdk/aws-sns-subscriptions:restrictSqsDescryption": true,
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"@aws-cdk/aws-apigateway:disableCloudWatchRole": true,
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"@aws-cdk/core:enablePartitionLiterals": true,
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"@aws-cdk/aws-events:eventsTargetQueueSameAccount": true,
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"@aws-cdk/aws-ecs:disableExplicitDeploymentControllerForCircuitBreaker": true,
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"@aws-cdk/aws-iam:importedRoleStackSafeDefaultPolicyName": true,
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"@aws-cdk/aws-s3:serverAccessLogsUseBucketPolicy": true,
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"@aws-cdk/aws-route53-patters:useCertificate": true,
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"@aws-cdk/customresources:installLatestAwsSdkDefault": false,
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"@aws-cdk/aws-rds:databaseProxyUniqueResourceName": true,
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"@aws-cdk/aws-codedeploy:removeAlarmsFromDeploymentGroup": true,
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"@aws-cdk/aws-apigateway:authorizerChangeDeploymentLogicalId": true,
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"@aws-cdk/aws-ec2:launchTemplateDefaultUserData": true,
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"@aws-cdk/aws-secretsmanager:useAttachedSecretResourcePolicyForSecretTargetAttachments": true,
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"@aws-cdk/aws-redshift:columnId": true,
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"@aws-cdk/aws-stepfunctions-tasks:enableEmrServicePolicyV2": true,
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"@aws-cdk/aws-ec2:restrictDefaultSecurityGroup": true,
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"@aws-cdk/aws-apigateway:requestValidatorUniqueId": true,
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"@aws-cdk/aws-kms:aliasNameRef": true,
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"@aws-cdk/aws-autoscaling:generateLaunchTemplateInsteadOfLaunchConfig": true,
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"@aws-cdk/core:includePrefixInUniqueNameGeneration": true,
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"@aws-cdk/aws-efs:denyAnonymousAccess": true,
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"@aws-cdk/aws-opensearchservice:enableOpensearchMultiAzWithStandby": true,
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"@aws-cdk/aws-lambda-nodejs:useLatestRuntimeVersion": true,
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"@aws-cdk/aws-efs:mountTargetOrderInsensitiveLogicalId": true,
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"@aws-cdk/aws-rds:auroraClusterChangeScopeOfInstanceParameterGroupWithEachParameters": true,
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"@aws-cdk/aws-appsync:useArnForSourceApiAssociationIdentifier": true,
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"@aws-cdk/aws-rds:preventRenderingDeprecatedCredentials": true,
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"@aws-cdk/aws-codepipeline-actions:useNewDefaultBranchForCodeCommitSource": true,
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"@aws-cdk/aws-cloudwatch-actions:changeLambdaPermissionLogicalIdForLambdaAction": true,
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"@aws-cdk/aws-codepipeline:crossAccountKeysDefaultValueToFalse": true,
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"@aws-cdk/aws-codepipeline:defaultPipelineTypeToV2": true,
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"@aws-cdk/aws-kms:reduceCrossAccountRegionPolicyScope": true,
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"@aws-cdk/aws-eks:nodegroupNameAttribute": true,
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"@aws-cdk/aws-ec2:ebsDefaultGp3Volume": true,
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"@aws-cdk/aws-ecs:removeDefaultDeploymentAlarm": true,
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"@aws-cdk/custom-resources:logApiResponseDataPropertyTrueDefault": false,
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"@aws-cdk/aws-s3:keepNotificationInImportedBucket": false,
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"@aws-cdk/aws-ecs:reduceEc2FargateCloudWatchPermissions": true,
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"@aws-cdk/aws-ec2:ec2SumTImeoutEnabled": true,
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"@aws-cdk/aws-appsync:appSyncGraphQLAPIScopeLambdaPermission": true,
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"@aws-cdk/aws-rds:setCorrectValueForDatabaseInstanceReadReplicaInstanceResourceId": true,
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"@aws-cdk/core:cfnIncludeRejectComplexResourceUpdateCreatePolicyIntrinsics": true,
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"@aws-cdk/aws-lambda-nodejs:sdkV3ExcludeSmithyPackages": true
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}
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}

‎examples/datadog-zip/expressjs/cdk/jest.config.js

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module.exports = {
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testEnvironment: 'node',
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roots: ['<rootDir>/test'],
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testMatch: ['**/*.test.ts'],
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transform: {
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'^.+\\.tsx?$': 'ts-jest'
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}
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};

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