Comparison
TypeScript vs JavaScript: the type safety debate
TypeScript has become the default for serious web development. Here's why — and when plain JavaScript still makes sense.
TypeScript
Typed superset of JavaScript by Microsoft. Adds static types, interfaces, and compile-time error checking to JavaScript.
JavaScript
The language of the web. Dynamic, flexible, and runs everywhere without a compilation step.
| Feature | TypeScript | JavaScript |
|---|---|---|
| Type Safety | Full static typing | Dynamic — runtime errors only |
| Tooling | Excellent — autocomplete, refactoring | Good — but less precise |
| Learning Curve | Moderate — types on top of JS | Lower — simpler syntax |
| Refactoring | Safe — compiler catches breaking changes | Risky — no compile-time checks |
| Build Step | Required — compilation | None — runs directly |
| Ecosystem | Most libraries have types | Universal compatibility |
| Team Scale | Excels with large codebases/teams | Fine for small projects |
| Error Prevention | Catches bugs before runtime | Bugs found at runtime |
When to choose each
Choose TypeScript
Choose TypeScript for any project beyond a simple script — especially SaaS products, team projects, and applications that will be maintained long-term.
Choose JavaScript
Choose plain JavaScript for quick scripts, prototypes you'll throw away, or very small projects where the type overhead isn't worth it.
Our verdict
We use TypeScript for every project. The upfront investment in types pays for itself many times over in fewer bugs, better refactoring, and improved developer experience. We genuinely can't imagine building production software without it.
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