Tag: TS

Angular/TypeScript: How to Access Values Set Inside Promise then/catch When working with Angular and TypeScript, you may encounter situations where you need to access values that are set inside a Promise’s then or catch block. Promises are commonly used for handling asynchronous operations, such as making HTTP requests or querying a database. However, accessing these…

Chutzpah can’t find Typescript Jasmine tests in VS 2022 Test Explorer If you are using TypeScript with Jasmine for your unit tests in Visual Studio 2022, you may encounter an issue where Chutzpah, the test runner, is unable to find your TypeScript Jasmine tests in the Test Explorer. This can be frustrating, but fortunately, there…

How to Create a Type Predicate to Check for 2 Types of setState in React When working with React and TypeScript, it’s common to use the setState function to update component state. However, there are situations where you might want to restrict the types of values that can be passed to setState. In this blog…

You need to provide a parserOptions.project for Eslint If you are using Eslint to lint your TypeScript code, you might have come across the need to provide the parserOptions.project configuration option. This option is used to specify the path to your TypeScript configuration file (tsconfig.json) so that Eslint can understand your project’s TypeScript settings and…

Typescript Conditionally extending an “Array or Object” not working as expected Typescript provides powerful features for creating and manipulating complex data structures. However, there are times when we need to conditionally extend an “Array or Object” in Typescript, and it may not work as expected. In this blog post, we will explore this issue and…

Cannot find module react/jsx-runtime – when using React 17 with TypeScript If you are encountering the “Cannot find module react/jsx-runtime” error while using React 17 with TypeScript, don’t worry, you’re not alone. This issue often occurs when you have upgraded to React 17 and are using TypeScript, as React 17 no longer includes the jsx-runtime…

Defining TypeScript Types for CommonJS Module If you are working with TypeScript and using CommonJS modules, you may encounter situations where you need to define types for CommonJS modules. In this blog post, we will explore different solutions to this problem. Solution 1: Using the `import` statement One way to define types for CommonJS modules…

Typescript: Generating an Interface Object from Another Interface Using keyof, but Renaming the Key Using a String Concatenation As a TypeScript developer, you may often come across situations where you need to generate a new interface object from an existing interface. TypeScript provides a powerful feature called keyof that allows you to extract keys from…

Seeking Advice: Building a Performant TypeScript PDF Generator for Angular – Any Alternatives to CommonJS Libraries? When it comes to building a performant TypeScript PDF generator for Angular, developers often rely on CommonJS libraries. While these libraries are widely used and provide powerful features, it’s worth exploring alternative options to optimize performance and enhance the…

Sequelize not working correctly with TypeScript If you’re working with TypeScript and Sequelize, you may have encountered some issues with the integration of these two technologies. In this blog post, we will explore some common problems and provide solutions to help you get Sequelize working correctly with TypeScript. 1. Incorrect type definitions One common issue…