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Graph/0f3f2afd-e574-4a10-9653-8bb31c6091e2

Problemunvalidated

Deploying to Vercel fails to apply the desired npm install flags (e.g., `--legacy-peer-deps`), causing dependency/peer conflicts during deployment.

0f3f2afd-e574-4a10-9653-8bb31c6091e2

Deploying to Vercel fails to apply the desired npm install flags (e.g., --legacy-peer-deps), causing dependency/peer conflicts during deployment.

Node Details

Public graph metadata

Updated4/30/2026

PageRank0.0000

Effectiveness0.000

Connections

50 linked nodes

DESCRIBESQuestion

CAUSED_BYRootCause

Vercel was not executing the configured custom install command (likely because the `vercel.json` configuration or other settings did not override the installation step as expected).

INSTANCE_OFClusterConcept

Deployment Config Drift

INSTANCE_OFProblem

ERROR Unknown option: 'legacy-peer-deps' — pnpm install --legacy-peer-deps. Tension: Did you mean 'strict-peer-dependencies'?

PERTAIN_TODomain

Dependency Resolution

PERTAIN_TODomain

Peer Dependencies

FIXED_BYSolution

Try running — npm config set legacy-peer-deps true. Tension: npm ERR! ERESOLVE unable to resolve dependency tree. Outcome: npm config set legacy-peer-deps true.

FIXED_BYSolution

Outcome: strict-peer-dependencies=false.

FIXED_BYSolution

Update package.json to use firebase@^9.23.0 (and keep firebase-frameworks at 0.10.4) so the peer dependency requirements are satisfied, then reinstall and redeploy.

FIXED_BYSolution

Run vercel build --prod --token=***. Tension: Error: spawn pnpm ENOENT. Outcome: Install Vercel CLI.

FIXED_BYSolution

I have tried different value permutations for the `exclude`/`include` fields — In a Vercel serverless project, I am getting hundreds of typescript errors coming from my `node_modules` directory. Tension: But to no avail. Outcome: I would like to know how I can have vercel CLI properly ignore this `node_modules` directory.

FIXED_BYSolution

The most robust and recommended solution is to make your build script create the directory structure that Vercel expects. — Vercel Build Output API Structure. Tension: This gives you full control over the deployment.

FIXED_BYSolution

Update the deployment setup to use the Vercel-supported React Router v7 configuration (so the required type-route files are generated/resolved during build), and redeploy.

FIXED_BYSolution

Find 【Deploy Hooks】, if there is no hook, just create one — Go to you vercel project setting (url likes 'https://vercel.com/your-team/your-project-name/settings/git'). Tension: the code update would sync to Vercel. Outcome: and the code update would sync to Vercel.

FIXED_BYSolution

Configure turbo.json to expose the needed variables (e.g., add DATABASE_URL under globalPassThroughEnv/globalEnv or under tasks.build.env) so Vercel build tasks receive them during execution.

FIXED_BYSolution

Upgrade the `rollup` package to the latest version and redeploy (e.g., `npm upgrade rollup`).

FIXED_BYSolution

Set the npm install command in Vercel under General > Project Settings > Install Command (using `npm install --force` or the intended flag), then redeploy.

FIXED_BYSolution

Add the `ENABLE_EXPERIMENTAL_COREPACK` variable with value `1` — Settings > Environment Variables page in your project. Tension: on Vercel Corepack needs to be enabled. Outcome: Then deploy a new build.

FIXED_BYSolution

I just deleted every Environment Variables on Vercel I could and set up new variables — Vercel Environment Variables. Tension: it works perfectly. Outcome: made a new deploy to take effect on the new variables and the problem is gone.

FIXED_BYSolution

using sharp version 0.33.1 resolved the issue for me — while deploying my Next.js application on Vercel. Outcome: Removing sharp too.

FIXED_BYSolution

"installCommand": "npm run prebuild && npm install" — including `vercel.json` in the root folder. Tension: This allows my prebuild script to run before Vercel installs dependencies. Outcome: I am then including `vercel.json` in the root folder of my repository.

FIXED_BYSolution

Use Vercel cloud environment for unstable_cache-backed server caching instead of local server execution.

OCCURS_INLanguage

OCCURS_INLanguage

Npx Environment Mismatch

Bundled Runtime Mismatch

Binary Build Dependency Drift

Local Environment Setup Drift

Package Resolution Assumption Drift

Dependency Build Failure

Corepack/Pnpm Verification Breaks

Dependency Version Mismatch

Deployment-Specific Runtime Failures

Dependency-Install Nondeterminism

Version Skew Breaks Integrations

Bundler Externalization Gaps

Prisma Client Engine Missing

Version Drift Dependency Breaks

Environment-Path Postinstall Hang

Runtime Toolchain Mismatch

Corepack Signature Key Drift

Environment-Dependent Install Hang

Wheel Build Incompatibility

Dependency Graph Drift

Non-Reproducible Dependency Installs

Binary Dependency Pinning

CLI Env-Var Passing Mismatch

Service Plan Retirement Confusion

Environment Drift Breaks Builds

Environment-Config Contract Mismatch

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