@marcm/shallow-equal

Mighty fast shallow equals (~524 bytes gzipped)

Install

npm install @marcm/shallow-equal

yarn add @marcm/shallow-equal

Supports

• Object
• Array
• TypedArray
• RegExp
• Promise
• Date
• NaN
• Set
• Map

Benchmark[^1] (from fast-equals)

[^1]: showing benchmark 'overall averages'. Ran on an M1 Pro (macOS 13.1). Run yourself by adding @marcm/shallow-equal to the fast-equals benchmark

| Package | Ops / sec | | :--- | ---: | | @marcm/shallow-equal | 13,079.405 | | fast-equals (shallowEqual) | 8,437.492 | | shallow-equal (shallowEqualObjects) | 6,777.645 | | shallowequal | 6,335.283 | | fast-shallow-equal | 5,659.316 |

Passes the full test suite of fast-equals

Usage

const { shallowEqual } = require('@marcm/shallow-equal')
// or
import { shallowEqual } from '@marcm/shallow-equal'

// Typed Arrays
shallowEqual(new Float32Array([3, 4, 6]), new Float32Array([3, 4, 6])) // true
shallowEqual(new Float32Array([3, 4, 6]), new Float32Array([3, 4, 8])) // false
// Objects and array
shallowEqual({ a: 'a', b: 'b' }, { a: 'a', b: 'b' }) // true
shallowEqual([{ a: 'a' }, { b: 'b' }], [{ a: 'a' }, { b: 'b' }]) // false
// Dates
shallowEqual(new Date('2017-06-16T21:36:48.362Z'), new Date('2016-06-16T21:36:48.362Z')) // false
shallowEqual(new Date('2017-06-16T21:36:48.362Z'), new Date('2017-06-16T21:36:48.362Z')) // true