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Important

Viewing alpha v1 documentation – usable but expect breaking changes. For stable version, see here

json-server

Node.js CI

Install

npm install json-server

Usage

Create a db.json or db.json5 file

{
  "posts": [
    { "id": "1", "title": "a title" },
    { "id": "2", "title": "another title" }
  ],
  "comments": [
    { "id": "1", "text": "a comment about post 1", "postId": "1" },
    { "id": "2", "text": "another comment about post 1", "postId": "1" }
  ],
  "profile": {
    "name": "typicode"
  }
}
View db.json5 example 
{
  posts: [
    { id: '1', title: 'a title' },
    { id: '2', title: 'another title' },
  ],
  comments: [
    { id: '1', text: 'a comment about post 1', postId: '1' },
    { id: '2', text: 'another comment about post 1', postId: '1' },
  ],
  profile: {
    name: 'typicode',
  },
}

You can read more about JSON5 format here.

Pass it to JSON Server CLI

$ npx json-server db.json

Get a REST API

$ curl http://localhost:3000/posts/1
{
  "id": "1",
  "title": "a title"
}

Run json-server --help for a list of options

Sponsors ✨

Sponsors

Become a sponsor and have your company logo here

Routes

Based on the example db.json, you'll get the following routes:

GET    /posts
GET    /posts/:id
POST   /posts
PUT    /posts/:id
PATCH  /posts/:id
DELETE /posts/:id

# Same for comments

GET   /profile
PUT   /profile
PATCH /profile

Params

Conditions

  • → ==
  • lt → <
  • lte → <=
  • gt → >
  • gte → >=
  • ne → !=
GET /posts?views_gt=9000

Range

  • start
  • end
  • limit
GET /posts?_start=10&_end=20
GET /posts?_start=10&_limit=10

Paginate

  • page
  • per_page (default = 10)
GET /posts?_page=1&_per_page=25

Sort

  • _sort=f1,f2
GET /posts?_sort=id,-views

Nested and array fields

  • x.y.z...
  • x.y.z[i]...
GET /posts?author.name=foo
GET /posts?author.email=foo
GET /posts?tags[0]=foo

Embed

GET /posts?_embed=comments
GET /comments?_embed=post

Delete

DELETE /posts/1
DELETE /posts/1?_embed=comments

Serving static files

If you create a ./public directory, JSON Serve will serve its content in addition to the REST API.

You can also add custom directories using -s/--static option.

json-server -s ./static
json-server -s ./static -s ./node_modules

License

This project uses the Fair Source License. Note: Only organizations with 3+ users need to contribute a small amount through sponsorship sponsor for usage. This license helps keep the project sustainable and healthy, benefiting everyone.

For more information, FAQs, and the rationale behind this, visit https://fair.io/.