Upgrade Next.js to 14

Upgraded Next.js from 13 to 14. Below are two changes I made.

v14 Summary

The minimum Node.js version has been bumped from 16.14 to 18.17

Changed Cloudflare default Node.js version to my current local version of 20.9.0.

Cloudflare: Workers & Pages -> [blog] -> Settings -> Environment variables

# Before
NODE_VERSION: 16.15.0
 
# After
NODE_VERSION: 20.9.0

The next export command is deprecated in favor of output: 'export'

Removed "next export" from build command.

Cloudflare: Workers & Pages -> [blog] -> Settings -> Build & deployments

# Before
Build command: next build && next export
 
# After
Build command: next build

Things previously done when upgrading to 13 that is also required in 14:

// next.config.js
 
const nextConfig = {
  output: "export",
}

// package.json
 
// before
{
  "build": "next build && next export",
}
 
// after
{
  "build": "next build",
}