@gebruederheitz/demo-maker NPM

Demo Maker

11ty-based documentation & demo pages for small projects

Installation

Inside the project you want to provide with examples, demos, documentation and test implementation pages, create a subdirectory with its own package.json. Install this library inside that directory using npm:

cd {{your-project-root}}
mkdir demo
cd demo
npm init 
npm install @gebruederheitz/demo-maker

Optionally define a project name that will be used in the generated site's titles in the package.json:

// {{your-project-root}}/demo/package.json
{
  // ...
  "config": {
    "projectName": "My Awesome Project"
  },
  // ...
  "scripts": {
    // Optionally define the build and serve scripts right here
    "build": "build-docs",
    "watch": "serve-docs"
  }
}

Usage

This package only provides a basic layout and some configuration for the @11ty/eleventy static site generator. For general documentation head to the Eleventy Docs.

Quickstart

Create a file index.md at your demo root ({{your-project-root}}/demo if you followed the above) with the following content:

---
layout: basic
tags: demo
title: Home
heading: Demos & Documentation
navOrder: 1
---

Welcome to my _awesome_ project's **awesome** documentation & demo page!

Now build the demo site or have 11ty serve it on localhost:

npx build-docs
# or
npx watch-docs

Your built site can be found at {{your-project-root}}/_demo.

Features

Base Layout

Demo Maker features a simple and streamlined base layout that includes a header and navigation bar. This allows you to skip the HTML setup and start writing your documentation straight away. Just add layout: basic to your page's front matter. Your content will be rendered to main.container > div.content under the page's <h1>.

Heading and Title

You should set a title in the front-matter of all your pages. This will be rendered into the page's <title> element in the HTML's <head>, and appear as the page entry's name in the navigation.

You can optionally also provide a heading, which will then be used instead of the title in the page's top <h1> element.

Project Name

// {{your-project-root}}/demo/package.json
{
  // ...
  "config": {
    "projectName": "My Awesome Project"
  },
  // ...
}

Two-Level Navigation and Navigation Sorting

Any item with the tag demo will receive a top-level nav entry. Its position is determined by the value of its navOrder front matter entry: A lower navOrder means a higher sort priority, i.e. the item will appear closer to the top. Otherwise 11ty's default sorting algorithm is used.

You can create a second level of navigation by using the parent page's slug (i.e. the name of its directory) as another page's tag. These sub-navigation items can also have a navOrder.

demo/
  |-- index.md
  |-- awesome-feature/
  |    |-- index.md
  |    |-- awesome-feature-faq/
  |    |     |-- index.md (tags: awesome-feature)
  |    |-- brilliant-feature-comparison/
  |    |     |-- index.md (tags: awesome-feature)

You can add this type of custom sorting to arbitrary collections using the utility function – that way you can also sort the sub-navigation entries.

Example Demonstrations (`include_demo` shortcode)

Demo Maker provides you with a shortcode you can use to demonstrate a feature and show how it's done in one go:

<!-- my-feature/index.md -->

{% include_demo 'example.html' %}

<!-- my-feature/example.html -->
<style>
    .container {
        display: block;
        width: 2rem;
        height: 2rem;
        background-color: blue;
    }
    
    .container.modified {
        background-color: red;
    }
</style>

<div class="container" data-container="init"></div>
<script>
    const container = document.querySelector('[data-container]');
    container.addEventListener('click', () => {
        container.classList.add('modified');
    });
</script>

This will:

insert an <h3 class="example-heading">Example</h3>,
include the file example.html directly, i.e. show the user a blue square which will change its color when clicked,
include the same file inside <pre class="language-html"><code class="language-html"></code></pre> so the user can see the code that was used to generate what they're seeing,
insert a separator element with margin to the bottom.

You can also extend the heading by providing a custom description as the second shortcode parameter:

{% include_demo 'example.html', ' Changing the color' %}

Which will render:

<h3 class="example-heading">Example: Changing the color</h3>

If the code preview should use a language other than HTML for highlighting, you can provide a third parameter:

{% include_demo 'example.html', null, 'xml' %}

Custom configuration, style & script includes

Don't edit the .eleventy.js file; your changes will be overwritten by the next npm install. Use .eleventy.custom.js to provide additional custom configuration as a regular 11ty config file.

The main use for this is to add "passthrough copies" in order to include your project's scripts and styles:

// .eleventy.custom.js
module.exports = function (eleventyConfig) {
    // We're copying the built scripts from the main project into `_includes/assets/`
    eleventyConfig.addPassthroughCopy({
        '../modules/timer/dist/*.js': '_includes/assets',
        '../modules/timer/dist/esm/*.js': '_includes/assets/esm',
    });
    
    return {};
}

You can use additional front matter keys to easily include your scripts and styles on a page:

script: esm/timer.js
scriptDefer: true
scriptModule: true
scriptNoModule: timer.js
extraScriptAttributes: 'data-custom-attribute="test"'
stylesheet: css/timer.css

<!-- ... -->
  <link rel="stylesheet" href="/assets/css/timer.css" />
<!-- ... -->
  <script src="/assets/esm/timer.js" type="module" defer data-custom-attribute="test"></script>
  <script nomodule src="/assets/timer.js" data-custom-attribute="test"></script>
<!-- ... -->

script: timer.js
scriptDefer: true

<!-- ... -->
  <script src="/assets/timer.js" defer></script>
<!-- ... -->

Utilities & Custom sorting for arbitrary collections

Your .eleventy.custom.js gets called with an additional object parameter containing utilities (currently just the one):

module.exports = function (eleventyConfig, utils) {
   // Add custom sorting by "navOrder" frontmatter attriubte to all items tagged
   // "mytagname":
   utils.sortedCollection('mycollection', 'mytagname');
}

Limited content width

With a simple utility you can limit the content's width to 80ch and center it within <main>:

// .eleventy.custom.js
eleventyConfig.addGlobalData('contentLimited', true);

There's a template based on the site navigation that allows you to display a hierarchical table of contents:

{% include '_includes/components/_table-of-contents.njk' %}

Custom styles

The file {{demo_root}}/_includes/assets/custom.css will be automatically included by the base layout.

Favicons & Header logo

Put your favicons in _includes/assets/icon/favicon-32.png and _includes/assets/icon/favicon-256.png to have them automatically included through the base template.

You can create a template at _includes/components/_header-logo.njk to add an element containing your library's logo:

{# _includes/components/_header-logo.njk #}
<a href="/" class="navbar-brand me-3 bg-light p-2 rounded rounded-circle">
   <img src="/assets/icon/favicon-256.png" width="48" height="48" alt="My logo" />
</a>

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