nested-groupby
v3.0.0
Published
A multi-level groupBy for arrays. Nesting allows elements in an array to be grouped into a hierarchical tree structure; think of it like the GROUP BY operator in SQL, except you can have multiple levels of grouping, and the resulting output is a tree rath
Readme
Nested Groupby
Nested Groupby is a node module to group objects in an array similar to Lodash's groupBy method, but to group the objects by more than one key.
Examples
See this Codepen for demo.
import nestedGroupby from 'nested-groupby';
// For commonjs
// const nestedGroupby = require('nested-groupby');
const data = [
{ type: 'apple', color: 'green', quantity: 1000 },
{ type: 'apple', color: 'red', quantity: 2000 },
{ type: 'grape', color: 'green', quantity: 1000 },
{ type: 'grape', color: 'red', quantity: 4000 },
];
nestedGroupby(data, ['type', 'color']);
// output will be the following
// {
// apple: {
// green: [ { type: 'apple', color: 'green', quantity: 1000 } ],
// red: [ { type: 'apple', color: 'red', quantity: 2000 } ]
// },
// grape: {
// green: [ { type: 'grape', color: 'green', quantity: 1000 } ],
// red: [ { type: 'grape', color: 'red', quantity: 4000 } ]
// }
// }