[Bug]: Storybook couldn't evaluate your

[ZhuravelAndreyVladimirov]

Describe the bug

when I try to run it gives an error:

SB_CORE-SERVER_0007 (MainFileEvaluationError): Storybook couldn't evaluate your .storybook\main.ts file.

Original error:
Error: Transform failed with 1 error:
(define name):1:0: ERROR: Expected identifier but found "import"
    at failureErrorWithLog (\node_modules\esbuild\lib\main.js:1476:15)
    at responseCallbacks.<computed> (\node_modules\esbuild\lib\main.js:622:9)
    at Socket.readFromStdout (\node_modules\esbuild\lib\main.js:600:7)
    at Socket.emit (node:events:520:28)
    at addChunk (node:internal/streams/readable:559:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:510:3)
    at Readable.push (node:internal/streams/readable:390:5)
    at Pipe.onStreamRead (node:internal/stream_base_commons:191:23)
    at loadMainConfig (.\node_modules\@storybook\core\dist\common\index.cjs:17511:11)
    at async buildDevStandalone (.\node_modules\@storybook\core\dist\core-server\index.cjs:37134:11)
    at async withTelemetry (.\node_modules\@storybook\core\dist\core-server\index.cjs:35757:12)
    at async dev (.\node_modules\@storybook\core\dist\cli\bin\index.cjs:2591:3)
    at async s.<anonymous> (.\node_modules\@storybook\core\dist\cli\bin\index.cjs:2643:74)

WARN Broken build, fix the error above.
WARN You may need to refresh the browser.

I use next js version 14
I found answers for Vite but couldn't find one that suited me

Reproduction link

https://stackblitz.com/edit/github-p7lfsqcw?file=.storybook%2Fmain.ts,.storybook%2Fpreview.ts&preset=node

Reproduction steps

No response

System

System:
    OS: Windows 10 10.0.19045
    CPU: (12) x64 AMD Ryzen 5 2600X Six-Core Processor
  Binaries:
    Node: 22.0.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.22 - C:\Program Files\nodejs\yarn.CMD <----- active
    npm: 10.5.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (129.0.2792.89)
  npmPackages:
    @storybook/addon-essentials: 8.4.2 => 8.4.2
    @storybook/addon-interactions: 8.4.2 => 8.4.2
    @storybook/addon-onboarding: 8.4.2 => 8.4.2
    @storybook/blocks: 8.4.2 => 8.4.2
    @storybook/nextjs: ^8.4.2 => 8.4.7
    @storybook/preview-api: ^8.4.2 => 8.4.7
    @storybook/react: 8.4.2 => 8.4.2
    @storybook/test: 8.4.2 => 8.4.2
    eslint-plugin-storybook: ^0.11.0 => 0.11.1
    storybook: 8.4.2 => 8.4.2

Additional context

No response

[greptile-apps]

** Disclaimer** This information might be inaccurate, due to it being generated automatically
This error occurs because esbuild is unable to process the TypeScript imports in your .storybook/main.ts file. For Next.js 14, modify your .storybook/main.ts to use the following format:

import type { StorybookConfig } from '@storybook/nextjs';

const config: StorybookConfig = {
  framework: '@storybook/nextjs',
  stories: ['../src/**/*.mdx', '../src/**/*.stories.@(js|jsx|mjs|ts|tsx)'],
  addons: [
    '@storybook/addon-links',
    '@storybook/addon-essentials',
    '@storybook/addon-onboarding',
    '@storybook/addon-interactions',
  ],
};

export default config;

Ensure you have @storybook/nextjs installed and that your TypeScript configuration (tsconfig.json) includes the Storybook directory.

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[ZhuravelAndreyVladimirov]

I switched to using "@storybook/nextjs": "8.4.1" and the problem was solved

[nathan-schmidt-viget]

I was running into this same problem and it has to do with esbuild. esbuild released a new version so updating the lock files should fix it.
It was originally tracked in this issue

[valentinpalkovic]

@ZhuravelAndreyVladimirov Does updating your lock file fix the issue (updating the transitive dependency esbuild)?

[birksy89]

I have this issue after deleting my lock file and reinstalling

[matthew-gladman-oua]

I had similar issues, with the latest storybook and esbuild, also make sure you're using main.ts instead of main.tsx. That was our issue

[birksy89]

For me, I solved the problem I was having by clearing the npx cache

I was running into this issue while trying to run an upgrade command, which I spotted was using the npx cache.

I'd seen in other threads that there was an issue with ESbuild (which had been fixed by the time I was reading) but I wondered if perhaps my npx cache still had that version.

Not saying that was the exact issue, but after clearing the cache - I was able to proceed.

[sjoqvist]

I got the same error code when upgrading from Storybook 8.4.7 to 8.5.0, although maybe for a different reason:

@storybook/core v8.5.0

SB_CORE-SERVER_0007 (MainFileEvaluationError): Storybook couldn't evaluate your .storybook/main.ts file.

Original error:
SyntaxError: The requested module '@storybook/react-vite' does not provide an export named 'StorybookConfig'
    at ModuleJobSync.runSync (node:internal/modules/esm/module_job:385:37)
    at ModuleLoader.importSyncForRequire (node:internal/modules/esm/loader:363:47)
    at loadESMFromCJS (node:internal/modules/cjs/loader:1569:24)
    at Module._compile (node:internal/modules/cjs/loader:1721:5)
    at Object.loadTS [as .ts] (node:internal/modules/cjs/loader:1831:10)
    at Module.load (node:internal/modules/cjs/loader:1473:32)
    at Function._load (node:internal/modules/cjs/loader:1285:12)
    at TracingChannel.traceSync (node:diagnostics_channel:322:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:234:24)
    at Module.require (node:internal/modules/cjs/loader:1495:12)
    at loadMainConfig (./node_modules/@storybook/core/dist/common/index.cjs:17550:11)
    at async buildDevStandalone (./node_modules/@storybook/core/dist/core-server/index.cjs:37127:11)
    at async withTelemetry (./node_modules/@storybook/core/dist/core-server/index.cjs:35750:12)
    at async dev (./node_modules/@storybook/core/dist/cli/bin/index.cjs:2591:3)
    at async s.<anonymous> (./node_modules/@storybook/core/dist/cli/bin/index.cjs:2643:74)

WARN Broken build, fix the error above.
WARN You may need to refresh the browser.

My fix:

diff --git a/images/web/.storybook/main.ts b/images/web/.storybook/main.ts
index 7eb6921..44d8c39 100644
--- a/images/web/.storybook/main.ts
+++ b/images/web/.storybook/main.ts
@@ -1,4 +1,4 @@
-import { StorybookConfig } from '@storybook/react-vite';
+import type { StorybookConfig } from '@storybook/react-vite';
 import { mergeConfig } from 'vite';

 const config: StorybookConfig = {

[dottodot]

I've started getting the same SB_CORE-SERVER_0007 error, tried all the suggestion and can't seem to find a way to get it working again.

[ViditaRustagi]

We are also getting the same issue while upgrading Sb from 7 to 8

[Ecolina05]

Hello, in my case it was solved by reinstalling dependencies with version 20 of node