TypeScript

Results

• 70% reduction in runtime errors
• Improved developer productivity with better tooling
• Clear interfaces between system modules
• Seamless integration with legacy systems

Results

• Zero critical bugs in production since launch
• 50% faster onboarding for new developers
• Comprehensive type safety across the codebase
• Successful audit by financial regulators

What are the advantages of TypeScript over JavaScript?

TypeScript offers several key advantages over JavaScript: static type checking catches errors during development rather than at runtime; enhanced IDE support provides better autocomplete, navigation, and refactoring tools; improved code quality through interfaces, generics, and other advanced type features; built-in documentation through type definitions; better scalability for large codebases and teams; and easier maintenance and refactoring. While TypeScript adds some initial development overhead, these benefits typically lead to significant time savings and quality improvements over a project's lifecycle.

Can TypeScript be integrated with existing JavaScript projects?

Yes, TypeScript can be gradually integrated into existing JavaScript projects. TypeScript is designed for incremental adoption - you can start by adding a tsconfig.json file and renaming some .js files to .ts, then gradually add type annotations. The allowJs compiler option lets you mix JavaScript and TypeScript files. For third-party libraries, you can use DefinitelyTyped (@types packages) to add type definitions without changing the libraries themselves. We have extensive experience with this migration process and can help plan and execute it with minimal disruption.

How strict should TypeScript configuration be?

The appropriate strictness level depends on your project's needs. For new projects, we typically recommend enabling most strict options (strict: true in tsconfig.json) to gain the full benefits of TypeScript. For existing projects being migrated from JavaScript, we often start with less strict settings and gradually increase strictness as the codebase matures. We can help determine the optimal configuration based on your team's experience, project requirements, and quality goals, finding the right balance between type safety and development velocity.

Do you use TypeScript with frontend frameworks?

Yes, we use TypeScript with all major frontend frameworks including React, Angular, Vue, and Svelte. Angular is built with TypeScript in mind, while React, Vue, and other frameworks have excellent TypeScript support. We leverage framework-specific type definitions and patterns to create type-safe components, manage state, and handle events. TypeScript is particularly valuable in frontend development for type-checking props, state, and API responses, significantly reducing common bugs and improving developer experience.

How do you handle TypeScript in a full-stack application?

In full-stack applications, we use TypeScript consistently across frontend and backend to create a seamless development experience. We define shared interfaces for API requests/responses and database models, ensuring type safety throughout the application. For Node.js backends, we use frameworks like NestJS, Express with ts-node, or Next.js API routes with TypeScript. We set up build pipelines that type-check and compile both frontend and backend code, and implement practices like schema validation at runtime boundaries to ensure type safety beyond compile time.