Should I Use Javascript Or Typescript With React?

When It Makes Sense

• Good fit: A new codebase where you control the architecture and have a team comfortable with static typing.
• Good fit: A project that will grow large, with many contributors, and where catching type errors early reduces bugs.

When You Should Avoid It

• Warning sign: A short‑lived prototype or hackathon where setup overhead outweighs benefits.
• Warning sign: A team with little or no TypeScript experience and no time for training.

Pros and Cons

Pros

• Early detection of type errors, leading to more reliable code.
• Improved IDE support, autocomplete, and refactoring confidence.

Cons

• Additional compilation step and build configuration complexity.
• Learning curve for developers unfamiliar with TypeScript’s type system.

Decision Checklist

• Do I have sufficient time to set up a TypeScript configuration and integrate it into the build pipeline?
• Will the codebase be maintained by multiple developers over a long period?
• Am I comfortable handling TypeScript errors and possibly adjusting existing libraries or typings?

Alternatives to Consider

You might use Flow as an alternative static type checker, add JSDoc annotations to plain JavaScript for limited type safety, or adopt TypeScript incrementally by converting files one at a time. Each option balances safety with setup effort differently.

Final Recommendation

If your React project is expected to evolve, involve several contributors, and you have the capacity to invest in initial setup, TypeScript is generally the stronger choice. For quick experiments, learning exercises, or very small teams, sticking with JavaScript keeps development fast and simple. In all cases, weigh team expertise, timeline, and long‑term maintenance needs, and consider consulting a senior developer when the decision impacts critical production systems.