Part of a library of zero-dependency npm modules that do just do one thing.
Guilt-free utilities for every occasion.
import index from 'just-index';
index([{id: 'first', val: 1}, {id: 'second', val: 2}], 'id');
// {first: {id: 'first', val: 1}, second: {id: 'second', val: 2}}
index([{id: 'first', val: 1}, null], 'id'); // {first: {id: 'first', val: 1}}
index([], 'id'); // {}
index([], null); // undefined
index({}, 'id'); // undefined