Casper Network Documentation

Overview

Welcome to the documentation website for the Casper Network. The documentation lives at this address: https://docs.casperlabs.io/.

Setup

Follow these steps to run the documentation website locally, displayed in your localhost at http://localhost:3000/.

Pre-requisites

• Install a code editor, such as Visual Studio Code (vscode). You may also want to install editing extensions such as prettier, eslint, and others listed in the .vscode/extensions.json file.

• Install Node.js (version 14+).

• Install yarn via npm using this command:

      npm install --global yarn
  

Running the website locally

1. Create a fork of the documentation repository: https://github.com/casper-network/docs/.
2. Clone the fork on your machine.
3. In the forked folder, run the following commands:
   • yarn install - This is required only once for a folder
   • yarn run start - This will start the localhost server
4. Access http://localhost:3000/ in your browser.
5. See the next section for details on how to update the content.

Updating existing content

1. Navigate to the source/docs/casper folder.
2. Find the content you want to update and modify the markdown file(s). If you want to add new content, read the Developer Guide.
3. Run the website locally to test your changes.
4. Submit changes to the documentation using a pull request from your forked repository.

Note: The website refreshes as you make changes to the markdown files. However, if you change the structure or configuration of the website, you need to re-start the application.

Adding new content

Adding new content requires structural changes, so read the Developer Guide below.

---

Developer Guide

If you want to add new content or make structural updates to the documentation, follow this guide.

Technology Stack

This documentation website uses the following infrastructure:

• Docusaurus (2.0.0-beta.4)
• React (17.0.1)
• Node (>12)

Project Architecture

The table below shows you the main structure of the documentation framework.

Folder/File	Description
.circleci	CI/CD pipeline module
.docusaurus	Docusaurus default configuration module
.github	GitHub module
.husky	Husky script module
.vscode	Visual Studio Code editor configuration
build	Docusaurus build packages
config	Docusaurus detailed configuration modules
source/blog	Blog page module
source/docs	Main documentation .md files
source/i18n	Localization packages
scripts	Bash script module
src/assets	Asset modules (style/image/icons)
src/components	Component module
src/html	HTML codebase
src/mocks	Mocks data module
src/pages	React page module
src/utils	Utility module
static	Static modules (image/icons)
types	Type interface definition part
.env	Environment variables
.eslintrc	Eslint configuration
.prettierrc	Prettier configuration
.textlintrc	Text lint configuration
Babel.config.js	Babel configuration
Crowdin.yml	Crowdin configuration
Docusaurus.config.js	Docusaurus configuration
package.json	NPM package list
Tsconfig.js	Typescript configuration
yarn.lock	Package dependency graph

Project Deployment

• Build the project with yarn build.
• Host the project locally using yarn serve.

Additional yarn Commands

You might find these commands useful:

• yarn start - Run the project in dev mode
• yarn build - Build the project pages
• yarn swizzle - Eject a Docusaurus core source component to customize it. Do not eject all components; eject a specific component by adding parameters to this command
• yarn deploy - Deploy your Docusaurus project using GitHub hosting
• yarn clear - Remove previous builds
• yarn serve - Host the project
• yarn write-translations - Generate translation modules automatically from pages
• yarn write-heading-ids -Generate translation modules automatically from pages
• yarn crowdin:sync - Build, upload, and download translation modules
• yarn run:prettier - Format the code base
• yarn run:eslint - Check the code style based on eslint
• yarn format - Run prettier and lint in sequence
• yarn reinstall - Reinstall all npm packages
• yarn prepare - This is an internal command for husky install; you do not need to run this command because it is included in yarn install
• yarn commit - Internal command for lint-stage. This command is included in pre-commit hooks, so you do not need to run this command but we include this here for visibility

Page Development

• To create a new document, add an md or mdx file in the docs/casper directory. Page routing will depend on page hierarchy unless you specify the routing configuration in the config folder.
  • To add an Overview or Tutorial page, use a template from the Templates folder.
• To create a blog page, add an md or mdx file in the blog directory.
• To create React pages, follow the pattern in the src/page directory.

Component Development

• Create reusable components in the src/components directory based on their purpose.
• Define or declare the necessary types in the component or in the src/types directory.
• Follow the pattern from the Background or Hero components.

Sidebar, Footer, and Navbar Development

To add or update a sidebar:

• Open the config/sidebar.config.js file.
• To add a new directory or file in the sidebar, update the module.exports structure.
• Note that item hierarchy depends on the order in which you list the items in this file.

For example, if you want to add a new directory called workflow, then add the following code as a property in module.exports:

module.exports = {
    workflow: [
        "workflow/index",
        "workflow/staking",
		...
    ],
    ...

To create or update a navbar, open and update the config/navbar.config.js file. Note that item hierarchy depends on the item order in this file. For example, if you want to create a navbar called Staking, add the following property in the module.exports structure:

```javascript
    {
      to: `${routePrefix}/staking`,
      activeBasePath: `${routePrefix}/staking`,
      label: "Staking",
      position: "left",
    },
```

To create or update a footer, open the config/footer.config.js file. Note that item hierarchy depends on the item order in this file. For example, assuming you want to add an item called Style Guide, add the following property:

```javascript
    title: 'Docs',
    items: [
    {
      label: 'Style Guide',
      to: 'docs/',
    },
```

Theme Development

To create new theme, add a variable in this file: src/assets/theme/variable.scss and a theme class in this file: src/assets/theme/theme.scss.

To change an existing theme, modify the config/color.config.js file.

Localization Development

• If you have made changes in the navbar, footer, or sidebar, remove the files that contain changed keys. Otherwise, you can skip this step.
• Run the yarn run:i18n script to tag content updates that need localization.
• Open the config/i18n.config.js file to change the default language or add more languages. You can customize the scripts/setup-i18n-json.sh and setup-i18n-md.sh modules to add more localization scripts.
• Next, replace the crowdin.yml file, or insert the Crowdin API key (CROWDIN_PERSONAL_ACCESS_TOKEN) into the .env file. Then run yarn run:crowdin to update the translated files using Crowdin.

reStructuredText to Markdown Conversion

To migrate reStructuredText (.rst) files to markdown (.md) files, follow these steps:

• Add new .rst documents into the docs directory.
• Run yarn run:migrate.
• Check that the .rst documents were converted to .md files.
• Remove the original .rst files.

For more information, reference the scripts/rst-to-md.sh script.

HTML Code Injection

For embedding HTML, follow the example in the src/html/footer.html and config/footer.config.js files.

Asset Management

You can add icons and images in the static folder:

• Add icons in the icon sub-folder, using this pattern: icon_name.svg.
• Add images in the image sub-folder, using this pattern: image_name.png.

Search

Open the config/algolia.config.js file and replace the api_key, index_name. Customize the search box or create a new style using the src/assets/scss/theme.scss file.

---

Troubleshooting

Error: ERR_OSSL_EVP_UNSUPPORTED on yarn run start:

If you get the following error, when starting the instance using Node v17:

Error: error:0308010C:digital envelope routines::unsupported
    at new Hash (node:internal/crypto/hash:67:19)
    at Object.createHash (node:crypto:130:10)
    at BulkUpdateDecorator.hashFactory (/home/vagrant/docs-app/node_modules/webpack/lib/util/createHash.js:145:18)
    at BulkUpdateDecorator.update (/home/vagrant/docs-app/node_modules/webpack/lib/util/createHash.js:46:50)
    at OriginalSource.updateHash (/home/vagrant/docs-app/node_modules/webpack/node_modules/webpack-sources/lib/OriginalSource.js:138:8)
    at NormalModule._initBuildHash (/home/vagrant/docs-app/node_modules/webpack/lib/NormalModule.js:870:17)
    at handleParseResult (/home/vagrant/docs-app/node_modules/webpack/lib/NormalModule.js:936:10)
    at /home/vagrant/docs-app/node_modules/webpack/lib/NormalModule.js:1028:4
    at processResult (/home/vagrant/docs-app/node_modules/webpack/lib/NormalModule.js:745:11)
    at /home/vagrant/docs-app/node_modules/webpack/lib/NormalModule.js:809:5
    at /home/vagrant/docs-app/node_modules/loader-runner/lib/LoaderRunner.js:406:3
    at iterateNormalLoaders (/home/vagrant/docs-app/node_modules/loader-runner/lib/LoaderRunner.js:232:10)
    at Array.<anonymous> (/home/vagrant/docs-app/node_modules/loader-runner/lib/LoaderRunner.js:223:4)
    at runCallbacks (/home/vagrant/docs-app/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:27:15)
    at /home/vagrant/docs-app/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js:200:4
    at /home/vagrant/docs-app/node_modules/graceful-fs/graceful-fs.js:123:16 {
  opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error' ],
  library: 'digital envelope routines',
  reason: 'unsupported',
  code: 'ERR_OSSL_EVP_UNSUPPORTED'
}
Node.js v17.1.0
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

This is a known issue on Docusaurus side which has been closed.

There is a workaround which consists on setting an environment variable before running the command or in your shell/system environment:

export NODE_OPTIONS=--openssl-legacy-provider

This issue will be fixed when the version of Docusaurus used in this repo gets updated at least to the version v2.0.0-beta.9 where the feature which fixes this bug is released.

Debugging Site Data

Run the project locally and go to http://localhost:3000/__docusaurus/debug/routes.

Git hooks are not working

• Install husky locally in the root level of the project using this command: yarn add -D husky.

• Create new git hooks using this command: npx husky add .husky/pre-commit "npm run commit".

• Update the pre-commit module with this script:

  #!/bin/sh
  .  "$(dirname "$0")/_/husky.sh"
  npm run commit

• Create a new .js file to test the commit flow. You should be able to see the Git hooks triggering.

• Undo the test commit by using git reset --hard HEAD.