Netlify configuration via netlify.toml for reproducible deployments

Netlify site settings configured in the UI are invisible to code review and can be accidentally changed by any team member. Build commands, publish directories, and redirect rules diverge between dev and production.

Commit a netlify.toml at the repository root:

[build]
  command = "npm run build"
  publish = "dist"
  environment = { NODE_VERSION = "20" }

[build.environment]
  NEXT_TELEMETRY_DISABLED = "1"

[[redirects]]
  from = "/api/*"
  to = "https://api.myapp.com/:splat"
  status = 200
  force = true

[[redirects]]
  from = "/*"
  to = "/index.html"
  status = 200

[context.deploy-preview]
  command = "npm run build:preview"

[context.branch-deploy]
  command = "npm run build"

Redirect rules in netlify.toml take precedence over UI-configured rules.

Infrastructure as code: the build configuration lives in the repository, is code-reviewed, versioned, and applied consistently to every deploy. No surprise UI changes affect production.