@spa-tools/utilities

deepEqual()

The === operator is ubiquitous in JavaScript for strict comparison but unfortunately it cannot be used to compare semantic equality between underlying values of reference types, but deepEqual() can!

Usage

import { deepEqual } from '@spa-tools/utilities';

const person1 = {
  address: {
    city: 'New York',
    country: 'USA',
  },
  hobbies: ['reading', 'coding'],
  name: 'John',
};

const person2 = person1;

const person3 = {
  address: {
    city: 'New York',
    country: 'USA',
  },
  hobbies: ['reading', 'coding'],
  name: 'John',
};

console.log(deepEqual(person1, person2));
// --> true

console.log(deepEqual(person1, person3));
// --> true

person3.address.city = 'Los Angeles';

console.log(deepEqual(person1, person3));
// --> false

Arguments

Name	Type	Description
a	any	The first data item to compare
b	any	The second data item to compare

Returns

Returns true if values are semantically equal and false if not.