How to incrementally migrate a Gatsby app to TypeScript

TypeScript's increasing popularity among developers is attributed to its ability to introduce static typing to JavaScript, which enhances code safety and maintainability. The text addresses concerns about the complexity of migrating existing projects to TypeScript, advocating for an incremental approach to ease the transition, especially in large codebases or when working within teams. It provides a detailed guide on setting up TypeScript in an existing Gatsby app, including changing file extensions, installing necessary dependencies, and configuring TypeScript to coexist with JavaScript. The article also highlights the benefits of static typing over prop types in React applications, noting the challenges that arise when TypeScript and JavaScript components interact. It suggests using the `InferProps` function from the prop-types library to mitigate these issues during the gradual transition. The text concludes by emphasizing the advantages of TypeScript and encourages developers to adopt it without major disruptions to existing codebases, offering practical solutions and examples available on GitHub.