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Next.js: Handle v14 compatibility for draftMode import #33341

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Merged
valentinpalkovic merged 1 commit into from
Dec 15, 2025
Merged

Next.js: Handle v14 compatibility for draftMode import #33341

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16 changes: 14 additions & 2 deletions code/frameworks/nextjs/src/export-mocks/headers/index.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
import { draftMode as originalDraftMode } from 'next/dist/server/request/draft-mode';
import * as headers from 'next/dist/server/request/headers';
import { fn } from 'storybook/test';

Expand All @@ -10,5 +9,18 @@ export { headers } from './headers';
export { cookies } from './cookies';

// passthrough mocks - keep original implementation but allow for spying
const draftMode = fn(originalDraftMode ?? (headers as any).draftMode).mockName('draftMode');
// In Next.js 14, draftMode is exported from 'next/dist/client/components/headers'
// In Next.js 15+, draftMode is exported from 'next/dist/server/request/draft-mode'
// The webpack alias handles this, but we need to avoid the top-level import
// to prevent build errors when the module doesn't exist
let originalDraftMode: any;
try {
// This will be resolved by webpack alias to the correct location based on Next.js version
originalDraftMode = require('next/dist/server/request/draft-mode').draftMode;
} catch {
// Fallback to the location in the headers module (Next.js 14)
originalDraftMode = (headers as any).draftMode;
}

const draftMode = fn(originalDraftMode).mockName('draftMode');
export { draftMode };
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