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Where are NextJS sourcemaps stored?

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Polish posted this in #help-forum
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PolishOP
I have two nextjs projects, one that uses app router and one that uses page router. Both are deployed on the Vercel paid plan.

They use TypeScript. Here is my tsconfig.
{
  "compilerOptions": {
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "strict": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "esnext",
    "moduleResolution": "bundler",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,
    "noImplicitAny": false,
    "plugins": [
      {
        "name": "next"
      }
    ],
    "paths": {
      "@/*": ["./src/*"]
    }
  },
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
  "exclude": ["node_modules"]
}


I don't have a webpack config directly defined since Next seems to be handling this for me. Where are the sourcemaps stored?

6 Replies

PolishOP
bump!
PolishOP
bump 2!
PolishOP
Thank you for the link, @American Crow ! Is this behaviour the same for the "backend" code? E.g App routes, server actions, SSR code/server components, etc? ("Browser" makes me think frontend)
There is one reference to a "serverSourceMaps" in the docs but it is only in the context of disabling it: https://nextjs.org/docs/app/building-your-application/optimizing/memory-usage#disable-source-maps

Is this on by default, and if so, where are they stored?
PolishOP
ping 😦