Best way to detect if app is running on Netlify at runtime?

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1

Hi everyone,

I’m looking for the most reliable way to check if my application is running on Netlify at runtime (not during build time).

I know about the build metadata environment variables like process.env.NETLIFY that are available during the build process, but I need to detect if an app is actually running on Netlify.

Here’s my current solution:

function isNetlifyRuntime(): boolean {
  if (typeof process === 'undefined' || !process.env) {
    return false;
  }

  return (
    Boolean(process.env.NETLIFY) ||
    Boolean(process.env.NETLIFY_FUNCTIONS_TOKEN) ||
    (typeof process.env.URL === 'string' && process.env.URL.endsWith('netlify.app'))
  );
}

Thanks for any guidance!

2

Hi there. You can check for the Netlify global: if (globalThis.Netlify).