Incremental Migration
Convert gradually so the product keeps shipping.
JavaScript to TypeScript Migration
JavaScript to TypeScript Migration by SpeedMVPs converts your JS codebase to fully-typed TypeScript in 2-3 weeks. We add incremental types, fix hidden bugs, configure strict mode, and set up CI type checks so your team ships faster with fewer runtime errors.
2-3
Weeks to Delivery
18+
MVPs Shipped
15+
Engineers
100%
Code Ownership
What We Deliver with JS to TypeScript Migration
1
Migration Plan
- Codebase and dependency assessment
- Incremental migration strategy (no big-bang risk)
- tsconfig and strictness roadmap
- Risk and effort estimate
2
Type Conversion
- File-by-file conversion to .ts/.tsx
- Accurate interfaces and types for your domain
- Third-party type definitions wired in
- Hidden type bugs surfaced and fixed
3
Strict Mode & Safety
- Enable strict compiler options safely
- Eliminate any-types where it matters
- Generics and utility types for reuse
- Editor autocompletion and IntelliSense
4
CI & Handoff
- Type checks in CI/CD
- ESLint with TypeScript rules
- Migration guide and conventions
- Team knowledge transfer
JS to TypeScript Migration Services
Safer code, faster shipping, fewer runtime bugs.
Strict Type Safety
Strict mode and precise types catch bugs at compile time.
Tooling & CI
Type checks and linting wired into your pipeline.
JavaScript to TypeScript Migration FAQ
JavaScript to TypeScript migration is the process of adding static types to a JS codebase by converting files to TypeScript. SpeedMVPs migrates incrementally, enables strict mode, and adds CI type checks in 2-3 weeks.
No. We migrate incrementally, file by file, so your app keeps building and shipping throughout. Each step is tested before moving on, eliminating big-bang risk.
Most migrations complete in 2-3 weeks depending on codebase size. Larger or legacy codebases are migrated in phased sprints with working checkpoints.
Migrations start from $6,000 based on codebase size and target strictness. Book a call for an estimate after a quick assessment of your repository.
TypeScript catches bugs at compile time, improves editor autocompletion, makes refactoring safer, and helps teams ship faster with fewer runtime errors — especially as the codebase grows.
Trusted by Global Companies Building AI Products
We've helped startups and enterprises worldwide transform their AI ideas into production-ready MVPs in 2–3 weeks. From fintech platforms to AI assistants, our global MVP development services have launched 18+ AI products serving users across the US, Europe, and Asia.
Portfolio: AI Products Built for Global Startups
From content platforms and AI assistants to analytics dashboards and fintech solutions—see how we've transformed ideas into production-ready MVPs in 2-3 weeks across diverse industries. Each product launched successfully, serving users globally.
UseArticle
AI-powered content creation and management platform that helps teams produce high-quality articles at scale.
AgentHi
Intelligent virtual assistant that streamlines customer support and automates routine business tasks.
StatsHub
Comprehensive analytics dashboard providing real-time insights and data visualization for businesses.
Harimaxx
Personal fitness companion with AI-driven workout plans and nutrition tracking for optimal health.
Vaga
Smart travel planning app that curates personalized itineraries and local experiences.
FoodScan
Nutrition analysis app that scans food items and provides detailed nutritional information instantly.
MyJobReach
Job matching platform connecting talented professionals with their dream opportunities.
TravelGram
Social platform for travelers to share experiences, discover destinations, and connect globally.
SuperStatz
Advanced sports statistics platform delivering in-depth analysis and performance metrics.
Cashbook
Simple expense tracking and budgeting app that helps users manage their finances effortlessly.
TypeFast
Typing speed improvement platform with gamified lessons and real-time performance tracking.
Easy Loan
Streamlined loan management system that simplifies borrowing and lending processes.
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Ready to Build Your MVP?
Schedule a complimentary strategy session. Transform your concept into a market-ready MVP within 2-3 weeks. Partner with us to accelerate your product launch and scale your startup globally.