Bolt deployment

Dependency Version Conflict - Incompatible Package Versions

npm install fails or warns about version conflicts. Packages require different versions of the same dependency.

Error: 'peer dep missing' or 'conflicting peer deps'

Error Messages You Might See

npm ERR! peer dep missing: requires react@17 npm WARN: peer dependencies not satisfied conflicting peer dependency: react Incompatible dependencies detected
npm ERR! peer dep missing: requires react@17npm WARN: peer dependencies not satisfiedconflicting peer dependency: reactIncompatible dependencies detected

Common Causes

  1. Two packages require different major versions of same dependency
  2. Peer dependency mismatch - library requires React 17 but you have 18
  3. npm version changed how it handles peer deps (npm 8+ is stricter)
  4. Dependency not compatible with Node version
  5. Outdated package not updated to support new dependencies

How to Fix It

Check what's conflicting: npm list [package-name]

Update package: npm update package-name@latest

If incompatible: remove older package and install newer

Force install (risky): npm install --legacy-peer-deps

Better: find package compatible with your versions or replace with alternative

Real developers can help you.

Matthew Jordan Matthew Jordan I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Caio Rodrigues Caio Rodrigues I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures. I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations. Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization. I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems. My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.** hanson1014 hanson1014 Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround. Tejas Chokhawala Tejas Chokhawala Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript. Focused on performance, clean architecture and shipping fast. Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools. Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions. Jen Jacobsen Jen Jacobsen I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — 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. Dor Yaloz Dor Yaloz SW engineer with 6+ years of experience, I worked with React/Node/Python did projects with React+Capacitor.js for ios Supabase expert Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services Victor Denisov Victor Denisov Developer

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Frequently Asked Questions

When should I use --legacy-peer-deps?

As temporary workaround only. Better to update packages to compatible versions. Don't commit with this flag

What's a peer dependency?

Library expects to use your version of a package (React, etc). You install it, library reuses it

How do I check all dependencies?

npm list shows tree. npm ls --depth=0 shows top level. npm outdated shows what can update

Related Bolt Issues

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