Edge Function Bundle Size Issues

Edge Functions have a 20MB source code limit. If your function exceeds this limit, deployment will fail.

Check your bundle size

Use the deno info command to analyze your function's dependencies and total size:

bash

deno info /path/to/function/index.ts

Look for the "size" field in the output to see the total bundle size.

How to reduce bundle size

If your bundle is too large, try these strategies:

Remove unused dependencies

Review your imports and remove any packages you're not actively using.

Use selective imports

Instead of importing entire packages, import only the specific modules you need:

tsx

// Good: Import specific submodules
import { specific } from 'npm:package/specific'

// Avoid: Import entire package
import * as everything from 'npm:package'

Split large functions

Consider breaking large functions into smaller, more focused functions. Each function can handle a specific task, reducing the code needed in any single deployment.

Choose lightweight alternatives

Research smaller packages that provide the same functionality. Many NPM packages designed for Node.js include unnecessary polyfills that increase bundle size.