Dev server warning: Sourcemap for "..." points to missing source files

[panwauu]

What version of astro are you using?

1.4.6

Are you using an SSR adapter? If so, which one?

vercel

What package manager are you using?

npm

What operating system are you using?

Windows

Describe the Bug

Since upgrading from 1.4.4 to 1.4.6 I get the error messages below. Only during the first call of the website directly after the start of the dev server.

> astro dev

   astro  v1.4.6 started in 233ms

  ┃ Local    http://127.0.0.1:3000/
  ┃ Network  use --host to expose

Sourcemap for "C:/Users/bauma/source/wetter/client/src/pages/index.astro" points to missing source files
Sourcemap for "C:/Users/bauma/source/wetter/client/src/layouts/Layout.astro" points to missing source files
Sourcemap for "C:/Users/bauma/source/wetter/client/src/components/WebcamImages.astro" points to missing source files     
Sourcemap for "C:/Users/bauma/source/wetter/client/src/components/AllgemeinTabelle.astro" points to missing source files 
Sourcemap for "C:/Users/bauma/source/wetter/client/src/components/WeatherOverviewBar.astro" points to missing source files

I tested:

• v1.4.3: No warnings
• v1.4.4: No warnings
• v1.4.5: Warnings
• v1.4.6: Warnings
• v1.4.7: Warnings

So it seems it was introduced in v1.4.5 where there was a quite extensive CHANGELOG.

Reported by:
https://discord.com/channels/830184174198718474/1002802338538463313/1029048088746283110
https://discord.com/channels/830184174198718474/1028832250990710794
https://discord.com/channels/830184174198718474/1028260666722746399

Link to Minimal Reproducible Example

Could not reproduce

Participation

• I am willing to submit a pull request for this issue.

[mandar1jn]

I also encountered this when upgrading from 1.4.4 to 1.4.6

[mandar1jn]

I’m guessing it might have been introduced here

[RobertAKARobin]

I'm getting this too, but only when I include this line:

const isProd = Boolean(import.meta.env.PROD);

Without that the warning doesn't show. (That's my only reference to import.meta.env)

FWIW so far I haven't seen any issues caused by this, but haven't looked very hard.

[rhizodigital]

I'm getting same error with fresh install of astro v1.4.7, error comes after adding tailwind integration.

[rhizodigital]

If I remove tailwind from astro.config.mjs error goes away.

[tony-sull]

I’m guessing it might have been introduced here

That fix shouldn't be related, that fix was just disabling one specific console warning in dev that was related to getStaticPaths()

Really interesting that some people have seen this go away when removing Tailwind, I wonder if there's a tailwind sourcemap being lost along the way?

[kaminskyalexander]

I've also had this exact issue appear on 1.4.5 and 1.4.6 only when the Tailwind integration is installed. Uninstalling it fixes the console warning.

[bluwy]

It may also be caused by #4918 as I added a postprocessing step for all Astro files, though we did return the right sourcemap, I'm not sure how the tailwind integration causes the error too.

[panwauu]

I encounter the problem without the tailwind integration. I am using image and vercel Integrations

[bluwy]

Did a bit of digging and #4990 seems to be causing it. Here's the sourcemap for the with-tailwindcss example src/pages/index.astro:

in 0.26.0:

{
  "version": 3,
  "sources": ["/Users/bjorn/Work/oss/astro/examples/with-tailwindcss/src/pages/index.astro", "astro:runtime"],
  "sourcesContent": ["---\n// Component Imports\nimport Button from '../components/Button.astro';\n\n// Full Astro Component Syntax:\n// https://docs.astro.build/core-concepts/astro-components/\n---\n\n\u003chtml lang=\"en\"\u003e\n\t\u003chead\u003e\n\t\t\u003cmeta charset=\"utf-8\" /\u003e\n\t\t\u003cmeta name=\"viewport\" content=\"width=device-width\" /\u003e\n\t\t\u003clink rel=\"icon\" type=\"image/svg+xml\" href=\"/favicon.svg\" /\u003e\n\t\t\u003cmeta name=\"generator\" content={Astro.generator} /\u003e\n\t\t\u003ctitle\u003eAstro + TailwindCSS\u003c/title\u003e\n\t\u003c/head\u003e\n\n\t\u003cbody\u003e\n\t\t\u003cdiv class=\"grid place-items-center h-screen content-center\"\u003e\n\t\t\t\u003cButton\u003eTailwind Button in Astro!\u003c/Button\u003e\n\t\t\t\u003ca href=\"/markdown-page\" class=\"p-4 underline\"\u003eMarkdown is also supported...\u003c/a\u003e\n\t\t\u003c/div\u003e\n\t\u003c/body\u003e\n\u003c/html\u003e\n", "Please open an issue: https://astro.build/issues"],
  "mappings": ";;;;;;;;;;;;;;;;;AAAA,AAAG,ACAH;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,gBDQC,CAAC,IAAD,CAAK,KAAM,IAAX,CAAe;AAAA,CACd,CAAC,IAAD,CAAK;AAAA,EACJ,CAAC,IAAD,CAAK,QAAS,OAAd,CAAuB;AAAA,EACvB,CAAC,IAAD,CAAK,KAAM,UAAX,CAAqB,QAAS,oBAA9B,CAAoD;AAAA,EACpD,CAAC,IAAD,CAAK,IAAK,MAAV,CAAgB,KAAM,eAAtB,CAAqC,KAAM,cAA3C,CAA2D;AAAA,EAC3D,CAAC,IAAD,CAAK,KAAM,WAAX,iBAA+B,eAAT,aAAtB,CAAkD;AAAA,EAClD,CAAC,KAAD,CAAM,mBAAqB,QAAM;AAAA,CACjC,ACfH,gCDeQ;AAAA;AAAA,CAEN,CAAC,IAAD,CAAK;AAAA,EACJ,CAAC,GAAD,CAAI,MAAO,iDAAX,CAA4D;AAAA,GAC3D,sCAAC,MAAD,ACnBJ,+BDmBW,ACnBX,4BDmBsC,EAAO;AAAA,GACzC,CAAC,CAAD,CAAE,KAAM,gBAAR,CAAwB,MAAO,eAA/B,CAA8C,6BAA+B,IAAE;AAAA,EAC/E,MAAI;AAAA,CACL,OAtBH,ACAA;AAAA;AAAA;",
  "names": []
}

In 0.25.0:

{
  "version": 3,
  "sources": ["/Users/bjorn/Work/oss/astro/examples/with-tailwindcss/src/pages/index.astro"],
  "sourcesContent": ["---\n// Component Imports\nimport Button from '../components/Button.astro';\n\n// Full Astro Component Syntax:\n// https://docs.astro.build/core-concepts/astro-components/\n---\n\n\u003chtml lang=\"en\"\u003e\n\t\u003chead\u003e\n\t\t\u003cmeta charset=\"utf-8\" /\u003e\n\t\t\u003cmeta name=\"viewport\" content=\"width=device-width\" /\u003e\n\t\t\u003clink rel=\"icon\" type=\"image/svg+xml\" href=\"/favicon.svg\" /\u003e\n\t\t\u003cmeta name=\"generator\" content={Astro.generator} /\u003e\n\t\t\u003ctitle\u003eAstro + TailwindCSS\u003c/title\u003e\n\t\u003c/head\u003e\n\n\t\u003cbody\u003e\n\t\t\u003cdiv class=\"grid place-items-center h-screen content-center\"\u003e\n\t\t\t\u003cButton\u003eTailwind Button in Astro!\u003c/Button\u003e\n\t\t\t\u003ca href=\"/markdown-page\" class=\"p-4 underline\"\u003eMarkdown is also supported...\u003c/a\u003e\n\t\t\u003c/div\u003e\n\t\u003c/body\u003e\n\u003c/html\u003e\n"],
  "mappings": ";;;;;;;;;;;;;;;;;AAAA,AAAG;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAH;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,gBAQC,CAAC,IAAD,CAAK,KAAM,IAAX,CAAe;AAAA,CACd,CAAC,IAAD,CAAK;AAAA,EACJ,CAAC,IAAD,CAAK,QAAS,OAAd,CAAuB;AAAA,EACvB,CAAC,IAAD,CAAK,KAAM,UAAX,CAAqB,QAAS,oBAA9B,CAAoD;AAAA,EACpD,CAAC,IAAD,CAAK,IAAK,MAAV,CAAgB,KAAM,eAAtB,CAAqC,KAAM,cAA3C,CAA2D;AAAA,EAC3D,CAAC,IAAD,CAAK,KAAM,WAAX,iBAA+B,eAAT,aAAtB,CAAkD;AAAA,EAClD,CAAC,KAAD,CAAM,mBAAqB,QAAM;AAAA,CACjC,AAfH,gCAeQ;AAAA;AAAA,CAEN,CAAC,IAAD,CAAK;AAAA,EACJ,CAAC,GAAD,CAAI,MAAO,iDAAX,CAA4D;AAAA,GAC3D,sCAAC,MAAD,sBAnBJ,SAmBW,yBAnBX,GAmBsC,EAAO;AAAA,GACzC,CAAC,CAAD,CAAE,KAAM,gBAAR,CAAwB,MAAO,eAA/B,CAA8C,6BAA+B,IAAE;AAAA,EAC/E,MAAI;AAAA,CACL,OAtBH;AAAA;AAAA;",
  "names": []
}

There's an extra astro:runtime source in the sourcemap, and I can't seem to find where that came from. cc @natemoo-re

[natemoo-re]

Thanks for investigating @bluwy! I've opened a PR to remove this on the compiler side. withastro/compiler#568

[bluwy]

Closing as the PR has been merged