A custom built static site generator that powers siva.dev 🏋️
Having written several build tools at work over the last few years, I wanted to try my hands at rolling out a full featured static site generator. I had been using Flask earlier to run several applications and I also used that to power my site. Over the years, those applications were decommissioned but the static site remained. It was getting increasingly difficult to maintain a static site on Flask and I wanted to see what all it takes to build a static site generator.
This was a great learning experience to be honest.
- Built with NodeJS.
- Supports Liquid templates.
- Supports minification and uglification of JS and CSS files(using the provided
browserslist
to determine transpilation targets). - Does asset revisioning of CSS, JS and image files.
- Supports PostCSS plugins.
- Images under
static
will be optimised withimageoptim
. - Code highlighting at build time using highlight.js.
- Automatic sitemap and RSS feeds generation.
- Supports extracting and inlining critical CSS with critical.
- Supports inlining assets using inline-source.
- Generates images for various resolutions and automatically inserts
picture
elements with the correspondingsource
elements. - Minifies output HTML.
- Supports including html in md by implementing a custom md syntax.
::: include table.html :::
. - Live-reload during development.
- Copies CNAME to
build
directory, so will work with GH Pages. - Implements a cache resulting in faster builds on subsequent runs.
- Run
npm i -g @astronomersiva/lego
.
- Run
lego g siteName
to create a new site. - Run
lego s
/lego serve
to run a server. - Run
lego b
/lego build
to create an optimised build. - To include an HTML in a markdown file, use ::: include table.html :::.
- To automatically generate images for various resolutions,
::: lego-image src="static/images/${IMAGE}" res="1080,500,320" alt="alternate text" class="img-responsive center-block" :::
- lego also exposes an
isDevelopment
variable that you can use to disable certain stuff in development. For example, analytics.
{% unless isDevelopment %}
<!-- analytics code -->
{% endunless %}
.
├── CNAME
├── README.md
├── layouts
│ ├── post.html // will be used for markdown posts
│ └── tags.html // will be used to generate tag wise listing of posts
├── pages
│ ├── 404.html
│ └── about.html // each of these will be put under a separate folder in build
│ └── index.html
├── data
│ ├── authors.yml
│ └── speakers.yaml // will be available as data.authors and data.speakers
├── posts
│ ├── post.md
│ └── another-post.md
└── static
├── css
│ └── styles.css // possible to have sub folders
├── images
└── js
└── custom-scripts.js
Every lego project has a lego.js
file at the root. It should have the following contents:
url
: This is needed to generate sitemaps. Example,'https://www.sivasubramanyam.me/'
.critical
: This can be used if critical CSS is to be inlined. Using this might significantly increase production build times. Takes options applicable to critical. Example,
critical: {
inline: true,
dimensions: [
{
height: 800,
width: 470
}, {
height: 900,
width: 1200
}
],
penthouse: {
timeout: 150000
}
}
skipDirsInPostUrls
: If this option is set astrue
, the URL of generated posts will not include directories. For example, in this tree structure,
.
└── posts
├── travel
│ └── nepal.md
└── i-love-js.md
the URL of nepal.md will be site.com/nepal
if this option is true
. By default(false
), the URL
of this post would be site.com/travel/nepal
. This option will be overridden if the post's front-matter
has a url
field.
inlineSource
: If this option is set astrue
, assets in tags that contain theinline
attribute will be inlined. You can also pass options supported by inline-source.server
: Options for the development server. Refer live-server.server.ssl
: If this option is set astrue
, lego will start an HTTPS development server using a self-signed certificate. Please note that self-signed certificates might not be accepted by many browsers by default. If you would like to use your owncert
andkey
files, you can do so by passing them to this option like,
ssl: {
key: 'server.key',
cert: 'server.crt'
}
htmlMinifier
- Options for html-minifier. Defaults are
{
collapseWhitespace: true,
minifyJS: true,
minifyCSS: true,
removeComments: true
}
md
: Pass an array of block-level custom containers that can be used by the Markdown parser. Refer markdown-it-container.
{
md: {
containers: [
{
name: 'myCustomContainer',
options: {
validate: function(params) {}
render: function(tokens, idx) {}
}
}
]
}
}
postCSSPlugins
: An array of PostCSS plugins. These will be used in addition tocssnano
andpostcss-preset-env
that are already included in lego.
{
postCSSPlugins: [
'precss',
'postcss-nested'
]
}
rss
: Options to pass to the RSS feeds generator. Refer rss feedOptions. Categories and Publishing Date will be automatically populated.
To run benchmarks, run
$ cd benchmarks
$ yarn
$ node generator.js
$ node --max-old-space-size=4096 index.js
It will run benchmarks against jekyll
the following data:
- 500 posts
- Each post contains 150 paragraphs.
- Each paragraph contains 150 random words.
- The size of each post is about 150kb.
- lego will be run with its cache disabled.
- No static files are present.
While jekyll produces only a build, lego does HTML minification as well.
Results:
jekyll x 0.04 ops/sec ±6.71% (5 runs sampled)
lego without cache x 0.06 ops/sec ±3.98% (5 runs sampled)
lego with cache x 0.06 ops/sec ±12.94% (5 runs sampled)
Fastest is lego without cache
MIT © Sivasubramanyam A