3 rules for writing idiomatic TypeScript

TypeScript, a typed superset of JavaScript, has gained significant popularity in the development community, becoming a preferred choice over vanilla JavaScript for many projects due to its type safety and ease of adoption by JavaScript developers. Despite its benefits, some developers do not fully leverage TypeScript's strengths, often writing code as if they were still using JavaScript, which leads to missed opportunities for improved code quality through features like interfaces and type checking. The article discusses common mistakes such as neglecting interfaces, overusing the any type, and improper use of index signatures, all of which can undermine the advantages of TypeScript. Through examples, it illustrates how to better utilize TypeScript’s capabilities, particularly in React projects, to enhance code reliability and maintainability. This focus on best practices aims to help developers effectively harness the power of TypeScript and avoid pitfalls that could compromise the development experience.