workflow build fails with "No loader is configured for .md files" with aliased paths

After upgrading to the latest version of workflow (specifically following the changes in PR 705), the workflow build fails during the "Discovering workflow directives" phase if a scanned TypeScript file imports a Markdown (.md) file with an aliased path.

This is the turbopack config in next.config.js that used to work before beta.40

  turbopack: {
    rules: {
      '*.md': {
        loaders: ['raw-loader'],
        as: '*.js',
      },
    },
  },

Environment
Workflow Version: 4.0.1-beta.41
Next.js Version: 15.x / 16.x
Package Manager: bun
OS: macOS (Darwin 24.6.0)

@ijjk

fyi @ijjk for vis

Hi, could you provide a link to minimal reproduction that was working before and isn't anymore?

next.config.ts

import type { NextConfig } from 'next';
import { withWorkflow } from 'workflow/next';

const config: NextConfig = {
  poweredByHeader: false,
  devIndicators: false,
  experimental: {
    turbopackFileSystemCacheForDev: true,
    authInterrupts: true,
  },
  turbopack: {
    rules: {
      '*.md': {
        loaders: ['raw-loader'],
        as: '*.js',
      },
    },
  },
};

export default withWorkflow(config);

markdown.d.ts

declare module '*.md' {
  const content: string;
  export default content;
}

and simply import an md file with an absolute path from within your code (e.g. import prompt from '@/ai/prompts/prompt.md';)

A link to a repo with this setup would be great!

Initial reproduction for vercel/workflow#724

@ijjk

@ijjk here you go https://github.com/gdaybrice/workflow-md-bug

I've simplified the approach on my PR (#766) can this be looked at please?

@gdaybrice

Should be fixed in #2546 @gdaybrice let us know if you're having any other issues!

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workflow build fails with "No loader is configured for .md files" with aliased paths #724

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workflow build fails with "No loader is configured for .md files" with aliased paths #724

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pranaygp commented on Jan 12, 2026

ijjk commented on Jan 12, 2026

gdaybrice commented on Jan 12, 2026

ijjk commented on Jan 12, 2026

gdaybrice commented on Jan 13, 2026

gdaybrice commented on Jan 23, 2026

NathanColosimo commented on Jul 15, 2026

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