Module not found: Error: Can't resolve '@emotion/styled/base' when running story book

Question

I recently installed Storybook to my project

Dependencies and Dev Dependencies below:

"dependencies": {
    "@emotion/react": "^11.1.4",
    "@emotion/styled": "^11.0.0",
    "@fortawesome/fontawesome-svg-core": "^1.2.34",
    "@fortawesome/free-solid-svg-icons": "^5.15.2",
    "@fortawesome/react-fontawesome": "^0.1.14",
    "@hot-loader/react-dom": "^17.0.1",
    "node-sass": "^5.0.0",
    "react": "^17.0.1",
    "react-content-loader": "^6.0.1",
    "react-dom": "^17.0.1",
    "react-hot-loader": "^4.13.0",
    "react-router-dom": "^5.2.0"
  },
  "devDependencies": {
    "@babel/core": "^7.12.10",
    "@babel/preset-env": "^7.12.11",
    "@babel/preset-react": "^7.12.10",
    "@commitlint/cli": "^11.0.0",
    "@commitlint/config-conventional": "^11.0.0",
    "@emotion/babel-plugin": "^11.1.2",
    "@emotion/babel-preset-css-prop": "^11.0.0",
    "@emotion/jest": "^11.1.0",
    "@emotion/styled-base": "^11.0.0",
    "@storybook/addon-actions": "^6.1.15",
    "@storybook/addon-essentials": "^6.1.15",
    "@storybook/addon-links": "^6.1.15",
    "@storybook/preset-scss": "^1.0.3",
    "@storybook/react": "^6.1.15",
    "@wojtekmaj/enzyme-adapter-react-17": "^0.4.1",
    "babel-eslint": "^10.1.0",
    "babel-jest": "^26.6.3",
    "babel-loader": "^8.2.2",
    "babel-plugin-emotion": "^11.0.0",
    "babel-plugin-require-context-hook": "^1.0.0",
    "clean-webpack-plugin": "^3.0.0",
    "css-loader": "^5.0.1",
    "enzyme": "^3.11.0",
    "enzyme-to-json": "^3.6.1",
    "eslint": "^7.18.0",
    "eslint-config-prettier": "^7.1.0",
    "eslint-loader": "^4.0.2",
    "eslint-plugin-import": "^2.22.1",
    "eslint-plugin-jest": "^24.1.3",
    "eslint-plugin-react": "^7.22.0",
    "eslint-plugin-react-hooks": "^4.2.0",
    "html-webpack-plugin": "^5.0.0-alpha.3",
    "husky": "^4.3.8",
    "jest": "^26.6.3",
    "jest-prop-type-error": "^1.1.0",
    "prettier": "^2.2.1",
    "react-test-renderer": "^17.0.1",
    "sass": "^1.32.4",
    "sass-loader": "^10.1.1",
    "standard-version": "^9.1.0",
    "style-loader": "^2.0.0",
    "terser-webpack-plugin": "^5.1.1",
    "url-loader": "^4.1.1",
    "webpack": "^5.15.0",
    "webpack-bundle-analyzer": "^4.3.0",
    "webpack-cli": "^4.3.1",
    "webpack-dev-server": "^3.11.2"
  },

I built a simple button component that uses @emotion/styled for styling. I would like to add a story for this button, however, when running npm run storybook i get the following error

Module not found: Error: Can't resolve '@emotion/styled/base' in '/directory/to/Button'

This is what I am importing inside my button component:

import styled from '@emotion/styled';
import { useTheme } from '@emotion/react';

const StyledButton = styled.button`
  cursor: pointer;
  font-size: ${({ fontSize }) => fontSize};
`;

This is happening to other components that use @emotion/styled as well. Am i missing an extra dependency or do I need to add any presets to .babelrc file?

.babelrc:

{
  "presets": [
    "@babel/preset-env",
    "@babel/preset-react",
    "@emotion/babel-preset-css-prop"
  ],
  "env": {
    "test": {
      "plugins": ["require-context-hook"]
    }
  },
  "plugins": ["react-hot-loader/babel", "@emotion"]
}

Answer 1

This is an issue caused by the break name change of emotion 11. So far storybook internally is still looking for the v10 names to integrate emotion packages. So you would have 2 options before storybook fixed it:

A. Downgrade to emotion 10.

B. A workaround:

// .storybook/main.js
const path = require("path");
const fs = require("fs");
const { merge } = require("webpack-merge");

function getPackageDir(filepath) {
  let currDir = path.dirname(require.resolve(filepath));
  while (true) {
    if (fs.existsSync(path.join(currDir, "package.json"))) {
      return currDir;
    }
    const { dir, root } = path.parse(currDir);
    if (dir === root) {
      throw new Error(
        `Could not find package.json in the parent directories starting from ${filepath}.`
      );
    }
    currDir = dir;
  }
}

module.exports = {
  stories: [
    "../stories/**/*.stories.mdx",
    "../components/**/*.stories.@(ts|tsx|mdx)",
  ],
  addons: ["@storybook/addon-links", "@storybook/addon-essentials"],
  webpackFinal: async (config) => {
    return merge(config, {
      resolve: {
        alias: {
          "@emotion/core": getPackageDir("@emotion/react"),
          "@emotion/styled": getPackageDir("@emotion/styled"),
          "emotion-theming": getPackageDir("@emotion/react"),
        },
      },
    });
  },
};

Answer 2

I had this same issue. The @emotion/babel-plugin needs to be enabled as the top most plugin in your .babelrc file.

you have: "plugins": ["react-hot-loader/babel", "@emotion"]

should be: "plugins": [ "@emotion", "react-hot-loader/babel"]

Also, be sure to take a look at the instructions from emotion below

https://emotion.sh/docs/@emotion/babel-plugin

I'm using emotion libraries: "@emotion/react": "^11.1.5" "@emotion/styled": "^11.1.5" "@emotion/babel-plugin": "^11.2.0"