Lightweight Javascript implementation of Ruby's hash#dig (https://apidock.com/ruby/Hash/dig) - no dependencies

How to install it

Via npm

npm install jsdig

Via yarn

yarn add jsdig

After installing, import it in your project with:

import 'jsdig';

OR

require('jsdig');

How to use it

• With an Object:

const world = {
  locations: {
    europe: 'Bamberg',
    usa: 'Indianapolis'
  }
};

world.dig('locations', 'usa');
// => 'Indianapolis'

• With an Array:

const world = {
  locations: [{
    europe: 'Bamberg',
  }, {
    usa: 'Indianapolis'
  }]
};

world.dig('locations', 0, 'europe');
// => 'Bamberg'

• It can also call a function inside a nested object, or in an array, or in both:

const germany = () => 'germany';
const world = [0, 1, { location: { europe: germany } }, 3];
world.dig(2, 'location', 'europe') === germany;
world.dig(2, 'location', 'europe')() === 'germany';

• If it can't find the value, it will return null by default. However, you can also pass in a default value of what should be returned if it isn't found.

const world = {
  locations: [{
    europe: 'Bamberg',
  }, {
    usa: 'Indianapolis'
  }]
};

world.dig('locations', 0, 'europe', 'germany', { default: [] });
// => []

world.dig('locations', 0, 'europe', 'germany', { default: 'not found' });
// => 'not found'

world.dig('locations', 0, 'europe', 'germany', { default: '' });
// => ''

License

MIT © Christoph Drechsler