Design pagic.config.ts

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As a senior markdown engineer senior blogger, I am passionate about blogging to develop blog systems and have written many blog themes.

Finally, I couldn't be satisfied with writing themes, and I started writing a blog system.

Or in a more general sense, a static website generator.

Now Pagic has completed a prototype, I also invited some friends to try it out, after some iterations, I decided to redesign pagic.config.ts, after all, as a static website generator, most users only need to configure the pagic.config.ts to build a website, so the design of the configuration file is very important.

Design principles§

  1. Convention over configuration
  2. As semantically as possible, clear at a glance
  3. The type is uniform, no options can pass both strings and functions
  4. Reference: Deno, tsconfig.json, webpack, Hexo, VuePress, Hugo

Naming convention§

File name and directory name§

Use underscore naming convention foo_bar/

In accordance with: Deno style guide

Variables and parameters§

Use camel case naming convention fooBar

In accordance with: Deno style guide

Config file name§

pagic.config.tsx or pagic.config.ts.

  • The priority of pagic.config.tsx is higher (In accordance with: webpack default loading order)
  • Why provide tsx and ts? Why not unified into ts? Because once the jsx syntax is used, it must be named tsx, which is a limitation of TypeScript
  • Why not unified into tsx? Because in most cases, using ts is sufficient
  • Only find the configuration file in the current running directory, does not provide --config to specify the configuration file (convention over configuration)
  • json format and yaml format have many restrictions, so use ts to write configuration files, not provide other options (convention over configuration)
  • Among the configuration files of other static website generators, the most confusing thing is that the theme configuration is separated out, which makes me often need to hesitate whether a config item belongs to the main configuration file or the theme config file. So, there is only one config file in Pagic

In accordance with:

  • tsconfig.json(ts)
  • webpack.config.js(webpack)
  • .vuepress/config.js(VuePress)
  • _config.yml(Hexo)
  • config.json(Hugo)

For file related configuration, refer to tsconfig.json.

Config item Type Default Description
srcDir string '.' The source directory of the build. All of the pages will be built into outDir with the same directory structure. The default is the current directory, at this time the in the current directory will be built into ${outDir}/index.html
outDir string 'dist' Output directory
include glob[] undefined include limits the files that will be scanned in srcDir. It is often used to specify some files or directories when srcDir is configured as .. glob syntax see here
exclude glob[] Follow up in detail exclude is similar to include, used to exclude the specified file in srcDir
root string '/' The base path of the deployment site. If the website is deployed in a sub-path, such as, then root should be set to '/pagic/'


The default value for exclude is long:

  // Dot files
  // Node common files

  // ${config.outDir} will be added later

Note that each item here can be matched to a file or directory. Taking **/node_modules as an example, it:

  • Not only can it match the node_modules directory under ${srcDir} (and all files in this directory)
  • It can also match the node_modules file under ${srcDir}
  • Of course, it can also match the node_modules directory or file in any multi-level subdirectory under ${srcDir}

In fact, **/node_modules will be converted to **/node_modules{,/**}, so that all the above situations can be matched.

have to be aware of is:

  • When matching, start with srcDir as the root directory. For example, pagic.config.{ts,tsx} can only match the files under srcDir, but not the files under the subdirectories of srcDir. To match the subdirectories, you need to add the prefix */, if you want to match any multi-level subdirectory, you need to add the prefix **/
  • The matching strategy of include is the same as that of exclude
  • User-configured exclude will append to the default value array instead of replacing it

Through these configurations, Pagic can be flexibly used in various scenarios:

Scenario 1: Pure website, separate directory to store source files§

If you just want to build a website, then the most convenient way is to use this directory structure to separate the source files from the built files:

├── dist/
|   └── index.html
├── src/
|   ├── _layout.tsx
|   └──
└── pagic.config.ts

At this time, the configuration of pagic.config.ts is very simple:

export default {
  srcDir: 'src',
  outDir: 'dist',

Scenario 2: Pure website, the root directory stores the source files§

There is usually a in the root directory of the project. Sometimes we want this file to be constructed as a page. At this time, we can set srcDir to '.', for example, refer to the directory structure of GitBook Is like this:

├── dist/
|   ├── basics/
|   |   └── index.html
|   ├── advenced/
|   |   └── index.html
|   └── index.html
├── basics/
|   └──
├── advenced/
|   └──
├── _layout.tsx
└── pagic.config.ts

At this time, the configuration of pagic.config.ts is also very simple:

export default {
  srcDir: '.',
  outDir: 'dist',

Note that if there are files that need to be excluded, you can use exclude to exclude them, for example:

export default {
  srcDir: '.',
  outDir: 'dist',
  exclude: ['examples'],

Scene 3: Project + Website§

If you want to build a website in a project and you don't want to create another repo, then these two methods can meet the needs:

  1. Place the website source files in the docs directory, and configure srcDir as 'docs'. The advantage is simple configuration, no need to configure include and exclude
  2. Build the website directly under the root directory, configure srcDir as '.', and then configure include to include the storage directory of the website. The advantage is that it contains in the root directory

Scene 4: Only show§

Some projects are very simple. You only need a and no other pages are needed. At this time, you can configure include to include only

export default {
  srcDir: '.',
  outDir: 'dist',
  include: [''],


Plugins are the core function of Pagic, and Pagic even splits the most basic build process into built-in plugins. There are three types of plugins:

  1. Built-in plugin: the most basic build process, it will run by default
  2. Official plugin: plugin implemented by Pagic, optional, such as: sidebar, ga, etc.
  3. Third-party plugins: plugins implemented by third parties, optional. Following Deno's design, the entrance is a url, such as:
Config item Type Default Description
plugins string[] ['clean', 'init', 'md', 'tsx', 'script', 'layout', 'out'] The plugin list, the value of the built-in plugin and the official plugin are the plugin name, and the value of the third-party plugin is its entrance url

The order in which the plugins are executed is in the order of their configuration, unless the plugin is implemented with an insert attribute:

export default {
  name: 'customPlugin',
  insert: 'before:script',
  // The design of fn refers to Deno
  fn: (pagic) => {
    // balabala

name is the unique identifier of the plugin, and it will be used to sort the plugins in insert.

The syntax of insert is before:${pluginName} or after:${pluginName}. This method is more convenient and more flexible than other static website generators that need to register various life cycle hooks.

fn is a function that only accepts one parameter, an instance of pagic, which can access all the configurations and contexts of Pagic in operation. If the plugin requires some additional configuration, you can add a config item customPlugin in pagic.config.ts, and then you can get the configuration through pagic.config.customPlugin in fn.

Have to be aware of is:

  • User-configured plugins will be appended to the default array instead of replacing it
  • When the plugin is running, it will be sorted according to its insert before running
  • You can use the - prefix to delete a built-in plugin. This feature is not commonly used, and only needs to be used in the following two situations:
    1. Just use React as a template engine. When you want to build an html page that does not load React, you can use -script to remove the plugin that builds js scripts. Note that scripts in React such as useState will not be available to execute on the client.
    2. Want to replace some built-in plugins by yourself, such as using -md to remove the plugin that parses the markdown file, and then add a custom plugin This can modify Pagic's core construction process to achieve a higher degree of freedom of personalization
  • Third-party plugins generally require the insert attribute, otherwise it will run after write. Few plugins need to be executed after the build is completed and the file is written


Theme is one of the core functions in Pagic, there are two official themes and lots of third-party themes.

Config item Type Default Description
theme string default The value of the official theme is the theme name, and the value of the third-party plugin is its entrance url

The operating mechanism of the theme is easy to understand: when you run pagic build, all files in the theme will be "copied" to srcDir, and then run build in the normal mode.

Of course, this "copy" does not actually copy the file. And when conflicting files are encountered, the user's files shall prevail.

Why does the theme need an entry file?

Because in Deno’s design, module are based on urls. Imagine a URL represents a theme. We can’t use fs.readdir to find all files in this theme directory like node, so there must be an entry file to indicate which files are included in this topic:

export default {
  files: ['assets/index.css', 'assets/reset.css', 'assets/variables.css', '_layout.tsx', 'favicon.ico'],

Among them, files means files that need to be "copied" to srcDir.

Website configuration§

Here are some convential configurations, which are usually implemented by plugins or themes.

Config item Type Default Description
title string undefined The title of the website, usually placed after the title of the page, such as: Config · Pagic, if there is no page title on the page, only the website title Pagic
description string undefined Website Description, usually displayed in <head><meta name="description">, and may also be displayed on the page
head ReactElement undefined Additional content injected into <head>, can be written in jsx. Note that you need to change the configuration file to pagic.config.tsx
sidebar undefined Sidebar
nav undefined Navigation on the top
github string undefined The GitHub address of the website, usually displayed in the upper right corner of the page
ga undefined Google Analytics configuration
gitalk undefined Gitalk configuration
tocAd ReactNode undefined Ads displayed above toc
tools undefined Some extra features

Development environment config§

Config item Type Default Description
watch boolean false Watch file changes to rebuild.
serve boolean false Start local service, preview static website.
port number 8000 Specify the port of the local service.