qcompare

the fastest function for comparing two js objects compatible with es6

Install

npm install --save qcompare

Usage

const qcompare = require( 'qcompare');

qcompare( { foo: 1 }, { foo: 1 } ); // true
qcompare( { bar: 1 }, { bar: 2 } ); // false

Features

• support for all new classes ES6;
• very quickly compares;
• correctly compares:
  • for Promise, Symbol, WeakMap, WeakSet, function - compared by reference;
  • for Map and Set - takes into account the insertion order;
  • for Map supported NaN for keys;
  • for Date supported NaN for return value;
• does not support circular objects;
• object-keys for the Map are compared by reference;

Benchmarks

Nodejs - v16.8.0
Date - 07.12.2022

Synthetic test, iteration for a large object

qcompare - 5.663s
nano-equal - 8.679s
dequal - 8.265s
fast-deep-equal - 7.330s
fast-equals - 43.327ms
react-fast-compare - 7.969s
lodash.isequal - 43.291s

For more balanced testing of performance, tests of other projects were used

fast-deep-equal v3.1.3 project test result

qcompare x 328,360 ops/sec ±0.27% (92 runs sampled)
fast-deep-equal x 275,325 ops/sec ±0.54% (92 runs sampled)
fast-deep-equal/es6 x 229,257 ops/sec ±0.43% (97 runs sampled)
fast-equals x 257,231 ops/sec ±0.31% (94 runs sampled)
nano-equal x 173,235 ops/sec ±0.29% (96 runs sampled)
shallow-equal-fuzzy x 119,923 ops/sec ±0.45% (94 runs sampled)
underscore.isEqual x 79,648 ops/sec ±0.77% (93 runs sampled)
lodash.isEqual x 36,797 ops/sec ±0.65% (96 runs sampled)
deep-equal x 87.99 ops/sec ±4.44% (42 runs sampled)
deep-eql x 23,791 ops/sec ±0.78% (93 runs sampled)
ramda.equals x 10,551 ops/sec ±1.65% (95 runs sampled)
util.isDeepStrictEqual x 49,437 ops/sec ±0.58% (96 runs sampled)
assert.deepStrictEqual x 579 ops/sec ±0.40% (93 runs sampled)
The fastest is qcompare

fast-equals v4.0.3 project test result

	Ops / sec
qcompare	5 492,983
fast-equals	3 495,332
deep-eql	1 880,796
fast-equals (circular)	1 859,143
fast-deep-equal	1 783,733
react-fast-compare	1 556,482
nano-equal	652,388
underscore.isEqual	445,516
lodash.isEqual	219,295
assert.deepStrictEqual	10,583
deep-equal	0,671

dequal v2.0.3 project test result

(basic) Benchmark:
  assert.deepStrictEqual x 242,497 ops/sec ±0.90% (92 runs sampled)
  util.isDeepStrictEqual x 243,227 ops/sec ±0.88% (95 runs sampled)
  fast-deep-equal        x 1,283,468 ops/sec ±0.44% (95 runs sampled)
  lodash.isEqual         x 265,328 ops/sec ±0.86% (94 runs sampled)
  nano-equal             x 969,216 ops/sec ±1.06% (95 runs sampled)
  dequal/lite            x 1,350,907 ops/sec ±2.40% (93 runs sampled)
  dequal                 x 1,360,938 ops/sec ±0.87% (94 runs sampled)
  qcompare               x 2,216,972 ops/sec ±0.70% (95 runs sampled)

(complex) Benchmark(excluding object-keys for the Map):
  assert.deepStrictEqual x 112,922 ops/sec ±0.95% (93 runs sampled)
  util.isDeepStrictEqual x 113,051 ops/sec ±1.08% (95 runs sampled)
  lodash.isEqual         x 52,685 ops/sec ±1.18% (89 runs sampled)
  dequal                 x 467,948 ops/sec ±0.51% (95 runs sampled)
  qcompare               x 1,158,099 ops/sec ±1.43% (92 runs sampled)

License

MIT Yuriy Khomenko