Fix Cloudflare Pages Node Version Error

Cloudflare Pages may build with a different Node version than your local machine. Pin NODE_VERSION and test a clean build.

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Common symptoms

Build log shows unsupported engine.
Syntax or package install errors happen only on Cloudflare.
The project needs Node 18 or 20.

What to check first

Platform: Cloudflare Pages
Error: Node version error

Cloudflare Pages may build with a different Node version than your local machine. Pin NODE_VERSION and test a clean build.

Step-by-step fix

Check local node -v and package.json engines.
Set NODE_VERSION in Cloudflare Pages environment variables.
Use npm ci or the correct package manager lockfile.
Redeploy after clearing build cache.

NODE_VERSION=20

# package.json
"engines": { "node": "20.x" }

Common mistake to avoid

Do not depend on the platform default Node version.

Still stuck?

Send the deploy log, repository link, target platform, and expected URL. ShipFast Deploy Rescue is a fixed-price debugging service for indie projects and MVPs.

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