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Is @storybook/builder-webpack5 ESM-only? Can you require() it?

A Storybook builder to dev and build with Webpack

Last verified Sep 9, 2026 against @storybook/builder-webpack5@10.6.0. JSON

No JS entry point No JavaScript entry point

@storybook/builder-webpack5 does not expose a JavaScript entry point in package.json. It is likely a CLI, a stylesheet, a type-definition package, or an asset bundle, so require() and import are not the way to use it.

Latest
10.6.0 (Sep 2, 2026)
Module format
No JS entry point
Last CommonJS version
9.1.20
Native ESM since
7.0.0
TypeScript types
Bundled
Node engines
not declared
License
MIT

Does @storybook/builder-webpack5@10.6.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("@storybook/builder-webpack5") from a CommonJS file and import "@storybook/builder-webpack5" from an ES module.

Runtimerequire("@storybook/builder-webpack5")import "@storybook/builder-webpack5"
Node.js 18✗ failsERR_REQUIRE_ESM✓ works
Node.js 20✓ works✓ works
Node.js 22✓ works✓ works
Node.js 24✓ works✓ works
Node.js 26✓ works✓ works
Bun 1.4✓ works✓ works

A failing require() on a CommonJS package usually means the package needs a browser/DOM global, a peer dependency, or a native binary that is not available in a bare Node.js process.

How to import @storybook/builder-webpack5

ES modules (import)

import builderWebpack5 from "@storybook/builder-webpack5";

CommonJS (require)

Not applicable.

Module format by version

Derived from the type, main and exports fields of every stable release on npm (318 versions; the newest 60 shown).

VersionsFormatFirst published
10.3.0 – 10.6.0No JS entry pointMar 18, 2026
10.0.7 – 10.2.19ESM-onlyNov 11, 2025

Frequently asked

Is @storybook/builder-webpack5 ESM-only?

@storybook/builder-webpack5@10.6.0 has no importable main entry. @storybook/builder-webpack5 does not expose a JavaScript entry point in package.json. It is likely a CLI, a stylesheet, a type-definition package, or an asset bundle, so require() and import are not the way to use it.

Does @storybook/builder-webpack5 work in Bun?

Yes. import "@storybook/builder-webpack5" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does @storybook/builder-webpack5 ship TypeScript types?

Yes. @storybook/builder-webpack5 bundles its own type declarations; no @types package is needed.

Links

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