Bolt
deployment
TypeScript Compilation Error - Type Mismatch
TypeScript reports type errors that prevent build. Type checking fails even though code appears correct.
Build exits with 'TypeScript error found' message.
Error Messages You Might See
Type 'string | null' is not assignable to type 'string'
Property 'name' does not exist on type 'unknown'
Argument of type 'string' not assignable to parameter of type 'number'
Cannot find name 'SomeType'
Common Causes
- Variable assigned wrong type
- Function argument type mismatch
- Null/undefined not handled properly
- Object or array structure mismatch
- Missing type definitions for library
How to Fix It
Read error message carefully - shows exact line and issue
Use 'as' type assertion sparingly: value as string only when you're sure
Fix null/undefined: use optional chaining (obj?.prop) and nullish coalescing (val ?? default)
For library missing types: npm install @types/library-name
Temporary: add // @ts-ignore above problematic line, then fix later
Real developers can help you.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Kingsley Omage
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prajwalfullstack
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rayush33
JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
Expertise:
š” Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
šļø Sharing insights through technical writing, blogging, and open-source contributions.
š¤ Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
šÆ Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
š Launched Compose101 ā a Jetpack Compose starter kit to speed up Android development.
š Open source contributions on Github & StackOverflow for Flutter & Dart
šļø Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
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Been around fixing other peoples code for 20 years.
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Iām a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle ā turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
Anthony Akpan
Developer with 8 years of experience building softwares fro startups
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
What's the difference between unknown and any?
unknown is safe - requires type checking. any bypasses checking entirely. Always prefer unknown
How do I handle null/undefined?
Use optional chaining: obj?.prop?. Use nullish coalescing: val ?? default
Should I use 'as' type assertion?
Rarely. It bypasses type checking. Use when you're 100% sure of the type