fsdb

fsdb is an un-opinionated library that lets you use the filesystem as an awesome document/graph database. It supports:

• Directories as nodes with an index file
• Common keys for all nodes in a directory with a common file
• Files in folders get linked as children
• Relationships (in progress)(by referencing other files and transparently linking them in memory)

Example

Run fsdb on a directory:

data
└─ books
   ├─ index.yaml
   └─ zen koans.md

It will return a list of files as an array, with children, and parsed data:

[
  {
    _: {
      sources: [ "./" ],
      isFile: false,
      isDirectory: true,
      parent: this,
      root: this,
      children: [...]
    }
    slug: "",
    path: [""]
  },
  {
    _: {
      sources: [
        "./books",
        "./books/index.yaml"
      ],
      isFile: true,
      isDirectory: true,
      ...
    }
    slug: "books",
    path: [""]
  },
  {
    _: {
      sources: [
        "./books/zen koans.md"
      ],
      isFile: true,
      isDirectory: false,
      ...
    }
    slug: "zen koans",
    path: ["books"],
    // from the front-matter & body of markdown file
    title: "Zen Koans",
    author: "Shasekishū",
    body: ...
  },
]

Installation

npm install @alizain/fsdb

or

yarn add @alizain/fsdb

Usage

import fsdb from "fsdb"

fsdb("./", config)
  .then((data) => { console.log(data) })

API

fsdb(dataDir, config) -> Promise

• dataDir the directory to parse
• config an object
  • commonProps (default: "common") the filename that contains common properties, for each directory

Cool Features

Index Files

Folders can be nodes with data too! Either use an index file inside the folder or use a file with the exact same name as a sibling to the folder

content/shasekishu/index.md

title: Shasekishū

content/shasekishu.yaml

author: Muju

in memory

{
  title: "Shasekishū",
  author: "Muju",
  slug: "shasekishu",
  path: ["content"],
  _: {
    sources: [
      "./content/shasekishu",
      "./content/shasekishu.yaml",
      "./content/shasekishu/index.md"
    ],
    isFile: true,
    isDirectory: true
  }
}

Common Properties

All children of a node can inherit properties from a common file. This is especially useful when all the files in a directory are related in some way.

By default, common properties are extracted from any file with the name common. This can be configured in config.commonProps.

content/shasekishu/common.yaml

author: Muju
source: Shasekishū

content/shasekishu/a-cup-of-tea.md

---
title: A Cup of Tea
---

Twenty monks and one nun, who was named Eshun...

in memory

{
  title: "A Cup of Tea",
  author: "Muju",
  source: "Shasekishū",
  body: "\nTwenty monks and one nun, who was named Eshun..."
  slug: "a-cup-of-tea",
  path: ["content", "shasekishu"],
  _: {
    sources: [
      "./content/shasekishu/a-cup-of-tea.md",
      "./content/shasekishu/common.yaml"
    ],
    isFile: true,
    isDirectory: false
  }
}

Supported Files

JSON

Absolutely!

YAML

Yup

Markdown

Yes, yes, and yes.

Note: Front-matter is treated as root level data, and all content is saved to the body key:

---
title: The Lord of the Rings
---

In a hole in the ground there lived a hobbit.

Which gets compiled to:

{
  title: "The Lord of the Rings",
  body: "\nIn a hole in the ground there lived a hobbit.",
  ...
}

Node Properties

Each node has a few properties that are provided by default.

{
  _: {
    sources: Array(String),   // the raw files that provided the data for this node
    isFile: Boolean,          // if this node has an associated file with it (for directories, this is only true if there is an index file)
    isDirectory: Boolean,     // if this node has children
    parent: Object,           // the parent node
    root: Object,             // the root node
    children: Array(Object)   // any child nodes
  },
  path: Array(String),        // the slugs of all parents in the correct order
  slug: String                // the filename of the primary source
}

Only slug and path can be redefined by the file itself.