Storybook Addon HTML

This addon for Storybook adds a tab that displays the compiled HTML for each story.

Requirements

Version 6 of this addon requires Storybook 8 and Prettier 3. If you are still using Storybook 7, you can use version 5.

As of version 7 of this addon, the react-syntax-highlighter dependency is no longer required. The addon will use the default syntax highlighter of Storybook, which also formats the code with Prettier.

Getting Started

Install the addon and its dependencies.

With NPM:

npm i --save-dev @whitespace/storybook-addon-html

With Yarn:

yarn add -D @whitespace/storybook-addon-html

With PNPM:

pnpm add -D @whitespace/storybook-addon-html

Register addon

// .storybook/main.js

module.exports = {
  // ...
  addons: [
    "@whitespace/storybook-addon-html",
    // ...
  ],
};

Usage

You can override the wrapper element selector used to grab the component HTML.

export const parameters = {
  html: {
    root: "#my-custom-wrapper", // default: #root
  },
};

Some frameworks put comments inside the HTML. If you want to remove these you can use the removeComments parameter. Set it to true to remove all comments or set it to a regular expression that matches the content of the comments you want to remove.

export const parameters = {
  html: {
    removeComments: /^\s*remove me\s*$/, // default: false
  },
};

You can also use the removeEmptyComments parameter to remove only empty comments like <!----> and <!-- -->.

export const parameters = {
  html: {
    removeEmptyComments: true, // default: false
  },
};

You can override the showLineNumbers and wrapLines settings for the syntax highlighter by using the highlighter parameter:

export const parameters = {
  html: {
    highlighter: {
      showLineNumbers: true, // default: false
      wrapLines: false, // default: true
    },
  },
};

Another way of hiding unwanted code is to define the transform option. It allows you to perform any change to the output code, e.g. removing attributes injected by frameworks.

html: {
  transform: (code) => {
    // Remove attributes `_nghost` and `ng-reflect` injected by Angular:
    return code.replace(/(?:_nghost|ng-reflect).*?="[\S\s]*?"/g, "");
  };
}

You can disable the HTML panel by setting the disable parameter to true. This will hide and disable the HTML addon in your stories.

html: {
  disable: true, // default: false
}