How it can support sourcemap for third party libarary installed node_modules

[tianyingchun]

Are you trying to transpile a local package or an npm package?
@dimjs/utils

Describe the bug
how it can support sourcemap for third party libarary installed node_modules

i tried install thrid party libarary in node-modules in next app, import function from node_modules it seems it could not load source map file in chrome, e.g. i. have module file is-null.js & is-null.js.map the is-null.js.map indicates the source ts file.

but it can not display is-null.ts in chrome sources panel. is there missed some configuratins?

To Reproduce
see vercel/next.js#34026

Expected behavior
see vercel/next.js#34026

Setup

• Next.js version:
• next-transpile-modules version: latest
• Node.js version:
• npm/yarn version: npm 8
• Operating System:
• Webpack 4 or 5: 5

Additional context
next 12

[ronenempathy]

having the same issue .

any workaround found around that?

[ronenempathy]

why is this closed?

[martpie]

cf. #291