A static site generator based in Next.js

nextein

A static site generator with markdown + react for Next.js.

What is it?

nextein is a wrapper around next.js that allows you to write static sites using markdown and react.

Requirements

NodeJS v8.x+ is required to run nextein commands.

Starter Kit

If you want to jump into a starter project check nextein-starter

Getting Started

There are a few steps you have to follow to get your site up and running with nextein

• Create a project:

  • mkdir my-site
  • cd my-site
  • npm init -y

• Install Dependencies

  • npm i nextein next react react-dom

• Add a next.config.js config file

  const nexteinConfig = require('nextein/config').default
  
  module.exports = nexteinConfig({
  
  })
  
  

• Create pages/index.js

  import React from 'react'
  
  import withPosts from 'nextein/posts'
  import { Content } from 'nextein/post'
  
  export default withPosts( ({ posts }) => {
    return (
      <section>
      {
        posts.map(post => <Content {...post} />)
      }
      </section>
    )
  })
  
  

• Create a markdown post entry under posts folder (posts/my-first-post.md)

  ---
  title: First Post
  category: post
  ---
  
  This is the first paragraph and it will be used as an excerpt when loaded in a `<Content excerpt />` tag.
  
  This paragraph should *not* appear in that list.
  
  

• Add npm scripts to run dev mode to your package.json

  "scripts": {
    "dev": "nextein"
  }
  

• Run the development server

  • npm run dev
  • open http://localhost:3000

• Add another npm script to your package.json to export the site

  "scripts": {
    "dev": "nextein",
    "export": "nextein build && nextein export"
  }
  

Example

See nextein-example for a working example

Documentation

withPosts

HOC for /pages components that renders a list of posts. It makes the post list available thru the posts property.

import withPosts from 'nextein/posts'

export default withPosts( ({ posts }) => { /* render your posts here */ } )

inCategory(category, options)

Filter function to be applied to posts to retrieve posts in a given category.

• category: {String} The category to filter results.
• options : {Object} Optional
  • includeSubCategories: Boolean true to include posts in sub categories. Default: false

Categories are resolved by the folder structure by default. This means that a post located at posts/categoryA/subOne will have a category categoryA/subOne unless you specify the category name in frontmatter.

import withPosts, { inCategory } from 'nextein/posts'

export default withPosts( ({ posts }) => { 
  const homePosts = posts.filter(inCategory('home'))
  /* render your homePosts here */ 
} )

If you want to retrieve all posts under a certain category, let's say categoryA which will include all those under subOne, use the options includeSubCategories: true.

import withPosts, { inCategory } from 'nextein/posts'

export default withPosts( ({ posts }) => { 
  const categoryAPosts = posts
    .filter(inCategory('categoryA', { includeSubCategories: true }))
  /* render your categoryAPostsmePosts here */ 
} )

withPostsFilterBy(filter)

Returns an HOC that gets all posts filtered out by the given filter function. This can be used in conjunction with inCategory to get only the desired posts in a certain category.

import { withPostsFilterBy, inCategory } from 'nextein/posts'

const withCategoryAPosts = withPostsFilterBy(inCategory('categoryA'))

export default withCategoryAPosts(({ posts }) => { 
 /* render your posts here */ 
})

sortByDate

Sort function to be applied to posts to sort by date (newest on top). This requires the post contains a date in frontmatter or in the file name (ala jekyll)

import withPosts, { sortByDate } from 'nextein/posts'

export default withPosts( ({ posts }) => { 
  posts.sort(sortByDate)
  /* render your posts here */ 
} )

withPost

HOC for /pages components that renders a single post. It makes the post available thru the post property.

import withPost from 'nextein/post'

export default withPost( ({ post }) => { /* render your post here */ } )

Content

Component to render a post object. This component receives the content from the post as a property.
Use the excerpt property to only render the first paragraph (this is useful when rendering a list of posts).

• content: {Object} Markdown content in HAST format to be render. This is provided by post.content
• excerpt: {Boolean} true to only render the first paragraph. Optional. Default: false
• renderers: {Object} A set of custom renderers for Markdown elements with the form of [tagName]: renderer.
• prefix: {String} Prefix to use for the generated React elements. Optional. Default: 'entry-'

import withPost, { Content } from 'nextein/post'

export default withPost( ({ post }) => { return (<Content {...post} />) } )

Using the excerpt property

import withPosts, {inCategory} from 'nextein/posts'

export default withPosts( ({ posts }) => { 
  const homePosts = posts.filter(inCategory('home'))
  return (
    <section>
    {
      homePosts.map( (post, idx) => <Content key={idx} {...post} excerpt/> )
    }
    </section>
  )
} )

Using renderers to change/style the <p> tag

export default withPost( ({ post }) => { 
  return (
    <Content {...post} 
      renderers={{
        p: Paragraph 
      }}
    />
  ) 
} )

const Paragraph = ({ children }) => (<p style={{padding:10, background: 'silver'}}> { children } </p> )

Link

You can use nextein/link instead with the exact same parameters as next/link. This component wraps the next/link one to simplify creating a Link for a given post object. next/link will work out of the box.
When passing a post.data.url to href it will generate the underlying next/link with the post information.

• data: {Object} Post frontmatter object. This is provided by post.data

import withPosts from 'nextein/posts'
import Link from 'nextein/link'

export default withPosts( ({ posts }) => (
  <section>
  {
    posts.map( (post, idx) => {
      return (
        <div>
          <h1>{post.data.title}</h1>
          <Content key={idx} {...post} excerpt/>
          <Link {...post}><a>Read More...</a></Link>
      </div>
      )
    })    
  }
  </section>
))

post

• data is the frontmatter object containig the post meta information (title, page, category, etc)
  • data.url is the generated url for the post
  • data.category is the post's category. When not specified, if the post is inside a folder, the directory structure under posts will be used.
  • data.date: JSON date from frontmatter's date or date in file name or file creation date
• raw is markdown content of the post
• content is a HAST representation of post content

{ data, raw } = post

frontmatter

There are only a few defined properties in the frontmatter metadata that is used by nextein

---
page: my-awesome-post
category: categoryOne
date: 2017-06-23

---

Post Content...

• page: the component under /pages that will be used to render the post (default to post which reads /pages/post component) Note: If you have an entry that should not be rendered by its own page (such as a part of an index file only) use page: false to avoid generating the url and exporting entry.
• category: the category name (optional)
• date: date string in YYYY-MM-DD format. Used to sort posts list. (optional)
• published: Set to false to remove this post from entries.
• permalink: Set the url using any parameter in the frontmatter object. Default value /:category?/:name. The ? means the parameter will be optional.
• name: Read Only The post file name. Date is removed from name if present.
• url: Read Only The post url.

nexteinConfig

A wrapper configuration function to be applied into the next.config.js. It provides a way to add your own next.js config along with nextein internal next.js config.

next.config.js

const nexteinConfig = require('nextein/config').default

module.exports = nexteinConfig({
  // Your own next.js config here
})

GitHub