Add a cdk app capable of building and publishing Lambda Layer

Author: Florian Chazal

layer-publisher/.npmignore

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+*.ts
+!*.d.ts
+
+# CDK asset staging directory
+.cdk.staging
+cdk.out

layer-publisher/README.md

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

layer-publisher/bin/layer-publisher.ts

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+#!/usr/bin/env node
+import 'source-map-support/register';
+import * as cdk from 'aws-cdk-lib';
+import { LayerPublisherStack } from '../src/layer-publisher-stack';
+
+const app = new cdk.App();
+new LayerPublisherStack(app, 'LayerPublisherStack');

layer-publisher/cdk.json

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+{
+  "app": "npx ts-node --prefer-ts-exts bin/layer-publisher.ts",
+  "watch": {
+    "include": [
+      "**"
+    ],
+    "exclude": [
+      "README.md",
+      "cdk*.json",
+      "**/*.d.ts",
+      "**/*.js",
+      "tsconfig.json",
+      "package*.json",
+      "yarn.lock",
+      "node_modules",
+      "test"
+    ]
+  },
+  "context": {
+    "@aws-cdk/aws-apigateway:usagePlanKeyOrderInsensitiveId": true,
+    "@aws-cdk/core:stackRelativeExports": true,
+    "@aws-cdk/aws-rds:lowercaseDbIdentifier": true,
+    "@aws-cdk/aws-lambda:recognizeVersionProps": true,
+    "@aws-cdk/aws-cloudfront:defaultSecurityPolicyTLSv1.2_2021": true,
+    "@aws-cdk-containers/ecs-service-extensions:enableDefaultLogDriver": true,
+    "@aws-cdk/aws-ec2:uniqueImdsv2TemplateName": true,
+    "@aws-cdk/core:target-partitions": [
+      "aws",
+      "aws-cn"
+    ]
+  }
+}

layer-publisher/jest.config.js

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