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Lucas Amos

Cloud Software Engineer

Recent posts

Using nodejs source maps with AWS Lambda

2 minute read
Debug your code even when it is minified

How to type NodeJS environment variables using TypeScript

1 minute read
Fix the error Type 'undefined' is not assignable to type 'string'

Creating an API rate limiter using Next.js middleware

5 minute read
Protect your endpoints

Mocking the AWS SDK with Python

4 minute read
Never hit those API endpoints

Javascript closures. What, why and how

2 minute read
Simulate private variables using closures

Retrieving bucket access history via cloudwatch log insights

2 minute read
Query your logs for auditing and informational purposes

Mock network requests using Jest and node-fetch

2 minute read
Ensure your application functions correctly by simulating server responses

Using git repositories as Terraform module sources

3 minute read
Reuse your terraform modules in multiple repositories

Using Jest to selectively mock functions and classes

2 minute read
Level up your testing by using spies to isolate specific functions

Eight things I learned managing GitHub infrastructure using Terraform

3 minute read
Use Infrastructure as Code to manage your AWS resources but make sure to watch out for these pitfalls

Web scraping using AWS Lambda and API Gateway

4 minute read
Get authoritative near real-time stock market data without an expensive license "

Easily mock the AWS SDK using jest

4 minute read
Create resilient and repeatable unit tests by replacing the AWS SDK with your own implementation

Reducing Secrets Manager costs via caching

4 minute read
Only make API calls when Lambda cold starts or scales out

Using EventBridge to unlock AWS event-driven architectures

4 minute read
Run code in response to events and decouple your applications

How to create chainable functions using Javascript

3 minute read
something().pretty().cool().is().happening().here()

Testing an express API using SuperTest

6 minute read
Testing is an essential part of any application. Learn how to use SuperTest to ensure that your Express API functions as intended and confidently make changes to your code without breaking it

Why I rewrote my website using Gatsby

3 minute read
Blazing fast load times, built on react and with image optimization as standard