Jan HestersUnit Testing ReducersPure functions are simple and so should be their tests (when using the correct techniques). Reducers, action creators (which aren’t…4 min read·Oct 13, 2020----
Jan HestersMaster Higher-Order Components in React TodayIn the next ten minutes, you are going to understand how HOCs in React work. You will find out how you can write your own and how to…9 min read·Feb 6, 2020--2--2
Jan HestersMultiple Environments with AWS AmplifyIn this tutorial, you are going to learn how to use Amplify’s env command. We will walk through an example where two people collaborate on…8 min read·Aug 27, 2019----
Jan HestersLambda Triggers & Read-Only Permissions with AWS AmplifyIn this tutorial, you are going to learn how you can trigger a Lambda function on authentication events with AWS Amplify. We are going to…5 min read·Aug 20, 2019--1--1
Jan HestersTesting Lambda Functions (feat. Amplify)You are going to learn how to write unit tests for Lambda functions. We are going to write integration tests, too, and use test-driven…8 min read·Aug 13, 2019--1--1
Jan HestersHow to Access the User in Lambda Functions (with Amplify)In this tutorial, you are going to learn how to get the user who calls the AWS Lambda function. We are going to use function composition…5 min read·Aug 6, 2019--1--1
Jan HestersUnderstanding Arrow FunctionsIn this tutorial you are going to learn the answers to the questions: “What is an arrow function in JavaScript?” and “How is an arrow…3 min read·Jul 30, 2019----
Jan HestersUnderstanding Conditional Rendering in React|| and && (often) don't return booleans. They behave differently than you might think. Do you use them for conditional rendering in React…4 min read·Jul 16, 2019--1--1
Jan HestersHow To Use AWS AppSync in Lambda FunctionsIn this tutorial, you are going to learn how you can execute queries and mutations in a Lambda function on an AppSync GraphQL API. We are…7 min read·Jul 9, 2019--4--4
Jan HestersQuery More Items Using Scans in AWS AmplifyIs the 1000 item limit in AWS Amplify hindering you from building your application? In this tutorial, you are going to learn how to use…4 min read·Jul 2, 2019----