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SpaceFinder app productionisation - TS and bundling of lambdas - Coggle…

- - - - and bundles it using esbuild
        
        a very fast JavaScript bundler
        
        if it's available
        
        npm install --save-dev esbuild@0
      - that automatically transpiles TypeScript
      - use this instead of Function
        
        in SpaceStack.ts
        
        import { NodejsFunction } from 'aws-cdk-lib/aws-lambda-nodejs'; export class SpaceStack extends Stack { constructor(scope: Construct, id: string, props: StackProps) { super(scope, id, props); const helloLambda = new NodejsFunction(this, 'helloLambda', { entry: join(__dirname, '..', 'services', 'node-lambda', 'hello.ts'), handler: 'handler', }); } }
  - - - so far it hasn't been a problem
        
        with our implementation code
        
        because CDK uses ts-node
        
        to compile and execute it
      - this is not the case for the Node environment in AWS Lambda
  - - - import { v4 } from 'uuid'; export async function handler(event: any, context: any) { return { statusCode: 200, // Add a random string using an external package // to show how bundling of dependencies works body: 'Hello from lambda!' + v4(), }; }