Jan HestersUnleash JavaScript’s Potential with Functional ProgrammingToo many JavaScript developers have no idea what JavaScript is capable of.3d ago3d ago
Jan HestersJavaScript Generators Explained, But On A Senior-LevelGenerators are powerful and underused by JavaScript developers. And many tutorials on generators only scratch the surface. In this article…Oct 7Oct 7
Jan Hesters12 Keys to Write Senior-Level Tests (Test Desiderata in JavaScript)“Desiderata” is derived from the Latin word for “things desired.”Oct 4Oct 4
Jan HestersUnit Testing ReducersPure functions are simple and so should be their tests (when using the correct techniques). Reducers, action creators (which aren’t…Oct 13, 2020Oct 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…Feb 6, 20202Feb 6, 20202
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…Aug 27, 2019Aug 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…Aug 20, 20191Aug 20, 20191
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…Aug 13, 20191Aug 13, 20191
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…Aug 6, 20191Aug 6, 20191
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…Jul 30, 2019Jul 30, 2019