Package Exports

fast-deep-equal
fast-deep-equal/es6

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (fast-deep-equal) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

fast-deep-equal

The fastest deep equal

This readme is for pre-release v3 with ES6 Map, Set and Typed arrays support.

See branch v2 for the main version.

Install

To install v3 pre-release with ES6 Map, Set and Typed arrays support

npm install fast-deep-equal@beta

To install v2

npm install fast-deep-equal

Features

ES5 compatible
works in node.js (8+) and browsers (IE9+)
checks equality of Date and RegExp objects by value.

ES6 equal (require('fast-deep-equal/es6')) also supports:

Maps
Sets
Typed arrays

Usage

var equal = require('fast-deep-equal');
console.log(equal({foo: 'bar'}, {foo: 'bar'})); // true

To support ES6 Maps, Sets and Typed arrays equality use:

var equal = require('fast-deep-equal/es6');
console.log(equal(Int16Array([1, 2]), Int16Array([1, 2]))); // true

Performance benchmark

Node.js v12.6.0:

fast-deep-equal x 325,485 ops/sec ±0.57% (86 runs sampled)
fast-deep-equal/es6 x 261,338 ops/sec ±0.45% (89 runs sampled)
nano-equal x 231,064 ops/sec ±0.62% (88 runs sampled)
shallow-equal-fuzzy x 164,828 ops/sec ±0.87% (88 runs sampled)
underscore.isEqual x 91,247 ops/sec ±0.56% (88 runs sampled)
lodash.isEqual x 48,000 ops/sec ±0.48% (86 runs sampled)
deep-equal x 73,699 ops/sec ±0.55% (86 runs sampled)
deep-eql x 42,804 ops/sec ±0.45% (87 runs sampled)
ramda.equals x 15,119 ops/sec ±0.49% (87 runs sampled)
util.isDeepStrictEqual x 58,458 ops/sec ±0.56% (89 runs sampled)
assert.deepStrictEqual x 583 ops/sec ±0.47% (87 runs sampled)

The fastest is fast-deep-equal

To run benchmark (requires node.js 6+):

npm install
npm run build
node benchmark

License

MIT