Vercel Deployment Failure - Package Version Compatibility Issue

[ulysses-ck]

Problem Description

The current project is failing to deploy on Vercel due to incompatible package versions and dependency resolution issues. The main failure occurs during the installation of the Holded API client and its dependencies. Additionally, the .api folder is git ignored, which means the Holded API client needs to be regenerated during each deployment.

Current Package Versions

• Next.js: 15.0.4 (experimental/unreleased version)
• React: 18.3.1 (experimental/unreleased version)
• React DOM: 18.3.1 (experimental/unreleased version)
• TypeScript: 5.6.3

Deployment Error Details

Error: Command "npx api install -l ts -y @holded/v1.0#2tq2om5ntgl42 && pnpm install --no-frozen-lockfile" exited with 1

The deployment fails due to:

• ESLint peer dependency conflicts
• Unsupported URL Type error with link:dummy.js
• npm package resolution timeouts
• Conflicts between different versions of ESLint plugins
• .api folder not being versioned (git ignored), requiring regeneration on each deploy

Repository

The project repository is available at: https://github.com/ulysses-ck/holded-nextjs/

[ulysses-ck]

I get a workaround with this setting in vercel. Also versioning .api folder
Install Command:

pnpm install --no-frozen-lockfile && cd .api/apis/holded && npm install && cd ../../..

Build Command:

next build

I'm unsure if this is the best solution. But build time goes from 5m to 1m30s

Also, is good to versioning .api ?

[davidalvarezr]

I think the problem is that the api package tries to install the dependency with npm instead of pnpm

I ended up doing the following:

• version the .api folder (without its node_modules)
• added this under package.json > scripts: "preinstall": "npm --prefix ./.api/apis/my-api install"
  Then, when I do a pnpm i, it correctly installs the node_modules in the api folder and then the node_modules in the main package

[ulysses-ck]

That's a really good solution