Groupby

Group a set of objects by some specific semantic property.

Installation

npm install --save groupby

Example

const groupBy = require('groupby');
var data = [
  {
    index: '1',
    name: 'foo'
  },
  {
    index: '1.1',
    name: 'bar'
  },
  {
    index: '2.2',
    name: 'hoo'
  },
  {
    index: '3.1',
    name: 'hia'
  }
];
// by default it's grouped by `index`
data = groupBy(data);
// output
{
  "1": {
    "1": {
      "name": "bar"
    },
    "name": "foo"
  },
  "2": {
    "2": {
      "name": "hoo"
    }
  },
  "3": {
    "1": {
      "name": "hia"
    }
  }
}

Why

It's useful for managing something with multi-level structure, for example a book, it has chapter 1, chapter 1.1 or even chapter 1.2.1. You can put all files in the same folder and use groupby to structure them when you need the whole book index, like you want to build an API for the book.

License

MIT © EGOIST