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Is @storybook/addon-knobs ESM-only? Can you require() it?

Storybook addon for editing props

Last verified Sep 9, 2026 against @storybook/addon-knobs@8.0.1. Markdown · JSON

CommonJS CommonJS on paper — require() failed in our runtime test

@storybook/addon-knobs declares a CommonJS entry only, but require("@storybook/addon-knobs") failed on every Node.js version in our probe: Cannot find module '@storybook/preview-api'. import "@storybook/addon-knobs" resolves to the same file, so it fails the same way. That usually means a missing peer dependency, a browser-only global, or a package that is not meant to be loaded directly; see the runtime table below.

What to do

  1. require("@storybook/addon-knobs") failed in our probe on every Node.js version (Cannot find module '@storybook/preview-api'); check the package README for peer dependencies or setup before relying on it.
  2. From ES modules use the default import: import addonKnobs from "@storybook/addon-knobs"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
8.0.1 (Jun 19, 2024)
Module format
CommonJS
Last CommonJS version
8.0.1
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
599K
License
MIT

Does @storybook/addon-knobs@8.0.1 actually load? Runtime test results

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

Runtimerequire("@storybook/addon-knobs")import "@storybook/addon-knobs"
Node.js 18✗ failsMODULE_NOT_FOUND✗ failsMODULE_NOT_FOUND
Node.js 20✗ failsMODULE_NOT_FOUND✗ failsMODULE_NOT_FOUND
Node.js 22✗ failsMODULE_NOT_FOUND✗ failsMODULE_NOT_FOUND
Node.js 24✗ failsMODULE_NOT_FOUND✗ failsMODULE_NOT_FOUND
Node.js 26✗ failsMODULE_NOT_FOUND✗ failsMODULE_NOT_FOUND
Bun 1.4.0✗ failsError✗ failsError

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/addon-knobs

ES modules (import)

import addonKnobs from "@storybook/addon-knobs";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

// require("@storybook/addon-knobs") failed in our probe on every Node.js version we test (Cannot find module '@storybook/preview-api'); see the runtime table.
const addonKnobs = require("@storybook/addon-knobs");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (197 versions; the newest 60 shown).

VersionsFormatFirst published
6.0.10 – 8.0.1CommonJSAug 15, 2020

Frequently asked

Is @storybook/addon-knobs ESM-only?

@storybook/addon-knobs@8.0.1 declares a CommonJS entry, but require() fails at runtime. @storybook/addon-knobs declares a CommonJS entry only, but require("@storybook/addon-knobs") failed on every Node.js version in our probe: Cannot find module '@storybook/preview-api'. import "@storybook/addon-knobs" resolves to the same file, so it fails the same way. That usually means a missing peer dependency, a browser-only global, or a package that is not meant to be loaded directly; see the runtime table below.

Can I require @storybook/addon-knobs?

Not in practice. @storybook/addon-knobs declares a CommonJS entry, but require("@storybook/addon-knobs") failed on every Node.js version in our probe: Cannot find module '@storybook/preview-api'. Check the package README for peer dependencies or setup before relying on it.

Can I import @storybook/addon-knobs with ES module syntax?

Yes. import addonKnobs from "@storybook/addon-knobs" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does @storybook/addon-knobs work in Bun?

Importing @storybook/addon-knobs failed in Bun 1.4.0 on Sep 9, 2026: error: Cannot find module '@storybook/preview-api' from '/Users/boat/Projects/top-seo/data/probe-work/@storybook__addon-knobs/node_modules/@storybook/addon-knobs/dist/index.js'

Does @storybook/addon-knobs ship TypeScript types?

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

Links

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