Technology Comparison

TypeScript vs JavaScript - Which Should You Use?

Comparing TypeScript and JavaScript for your next project. Honest analysis of performance, ecosystem, and suitability for Australian businesses.

98%

Client Retention

2 weeks

Prototype Delivery

150+

Integrations Available

under 2 seconds

Average Load Time

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Our Development Capabilities

Custom-built solutions for your specific business needs.

Progressive Web Apps

Web applications that feel native on mobile devices. Offline support, push notifications, and app-like performance.

API Development and Integration

RESTful and GraphQL APIs that connect your systems seamlessly. Custom integrations with 150+ business tools.

CI/CD and DevOps

Automated testing, continuous integration, and deployment pipelines that keep your application reliable and easy to update.

Headless CMS Integration

Decouple your content management from your frontend for flexibility, performance, and better developer experience.

Security-First Development

OWASP-compliant development practices, encrypted data handling, and regular security audits built into every project.

Performance Engineering

Server-side rendering, code splitting, and caching strategies that deliver sub-second load times at scale.

Quick Comparison

Side-by-side comparison to help you decide.

Criterion	TypeScript	JavaScript
Type safety	Static types caught at compile time; IDE autocompletion throughout	Dynamic types only; runtime errors for type mismatches
Refactoring safety	Rename a type and the compiler flags every broken callsite	Refactoring requires test coverage and grep - easy to miss callsites
Onboarding new engineers	Types serve as inline documentation; faster ramp-up on unfamiliar code	Engineers must read runtime behaviour to understand expected shapes
Compilation step	Required - tsc or bundler transpiles to JS; adds build config	None - runs directly in Node.js or the browser
Ecosystem support	First-class types in most major libraries; @types/* for the rest	Works with any library but loses type information without stubs
Strictness dial	Configurable via tsconfig.json strict mode; can adopt gradually	No equivalent - all dynamism, all the time
Migration path	Can rename .js to .ts incrementally; allowJs enables gradual adoption	N/A - JavaScript is the migration target's starting state

Our Verdict

Use TypeScript for any project with more than one developer, any project expected to last more than six months, or any codebase where correctness is important. The compile-time feedback loop pays back its setup cost within weeks on a real project. The only legitimate case for plain JavaScript is a personal script, a short-lived prototype, or an environment where a build step genuinely cannot be added. For Australian product teams, TypeScript is the professional standard - any agency or engineer delivering production code without it is taking on technical debt on your behalf.

Choose TypeScript when:

✓ Any production codebase with more than one developer
✓ Building an API or library that other teams will consume
✓ Your codebase will be maintained for more than six months
✓ You are onboarding engineers regularly and want types to serve as documentation

Choose JavaScript when:

✓ Writing a short-lived personal script or one-off data migration
✓ Rapid prototyping where a build step adds friction and the code will be thrown away
✓ An environment that cannot support a compilation step (some legacy hosting setups)

Frequently Asked Questions

Most projects deliver a working prototype in 2 weeks and complete within 4-8 weeks. Complex applications may take longer. We deliver in phases so you see value quickly.

Absolutely. You get 3 months of hands-on support after launch. For ongoing development, we offer flexible retainer packages tailored to your needs.

Yes, our team has experience with both TypeScript and JavaScript. We choose the right tool based on your project needs and recommend accordingly during our free assessment.

It depends on your project requirements. TypeScript and JavaScript each have strengths. Our detailed comparison above covers the trade-offs to help you decide.

We primarily build with Next.js, React, TypeScript, and Node.js. We also work with Python, PostgreSQL, and various cloud platforms. We choose the best technology for your specific requirements.

Every project is scoped individually based on complexity, integrations, and feature requirements. Most projects fall within our standard tiers. Book a free assessment to get a transparent, fixed-price quote.

Yes. We integrate with 150+ business tools and can build custom connectors for specialist software. Your new application will work seamlessly with your existing tech stack.