timoschinkel

import { Context } from 'aws-lambda'; /* npm install @types/aws-lambda */

export interface IMiddleware<E, R> {
    process(event: E, context: Context, next: IHandler<E, R>): Promise<R>;
}

export interface IHandler<E, R> {
    handle(event: E, context: Context): Promise<R>;
}
    

timoschinkel

import { APIGatewayProxyEvent, APIGatewayProxyResult } from 'aws-lambda';

export class ApiGatewayCorrelationContextMiddleware implements IMiddleware<APIGatewayProxyEvent, APIGatewayProxyResult> {
    public async process(event: APIGatewayProxyEvent, next: Handler<APIGatewayProxyEvent, APIGatewayProxyResult>): Promise<APIGatewayProxyResult> {
        return next(event);
    }
}

class SomeMiddleware implements IMiddleware<APIGatewayProxyEvent, APIGatewayProxyResult> {
    public async process(event: APIGatewayProxyEvent, next: EventHandler<APIGatewayProxyEvent, APIGatewayProxyResult>): Promise<APIGatewayProxyResult> {

timoschinkel

Assume a template syntax where you can use {x}, {{x}}, and {{{x}}}. How can we leverage regular expressions for this?

Example snippet:

{b} c {{d}} e {{{f}}} g

Option 1 - using JavaScript

timoschinkel

/* eslint-disable max-classes-per-file */

/*
 * An experiment about how we can structure this codebase
 */

/*
 * Request handling infrastructure
 */

timoschinkel

// Using AWS Cognito via TypeScript

import { AdminCreateUserCommand, AdminDeleteUserCommand, CognitoIdentityProviderClient } from '@aws-sdk/client-cognito-identity-provider';

const addresses = [
    // valid
    '[email protected]',
    '[email protected]',
    '"name..name"@example.com',
    'name@localhost',

timoschinkel

'use strict';

import { createServer } from 'node:http';

/*
 * Usage:
 * node server.js
 * 
 * This will pick a random available port on your local machine. You can steer the port and host using environment variables:
 * PORT=8080 HOST=localhost node server.js