Benchmark: lodash isEqual vs redux shallowEqual test 1

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>

Script Preparation code:

function equal(a, b) {
  if (a === b) return true;

  if (a && b && typeof a == 'object' && typeof b == 'object') {
    if (a.constructor !== b.constructor) return false;

    var length, i, keys;
    if (Array.isArray(a)) {
      length = a.length;
      if (length != b.length) return false;
      for (i = length; i-- !== 0;)
        if (!equal(a[i], b[i])) return false;
      return true;
    }



    if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
    if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
    if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();

    keys = Object.keys(a);
    length = keys.length;
    if (length !== Object.keys(b).length) return false;

    for (i = length; i-- !== 0;)
      if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;

    for (i = length; i-- !== 0;) {
      var key = keys[i];

      if (!equal(a[key], b[key])) return false;
    }

    return true;
  }

  // true if both NaN, false otherwise
  return a!==a && b!==b;
};

function is(x, y) {
  if (x === y) {
    return x !== 0 || y !== 0 || 1 / x === 1 / y
  } else {
    return x !== x && y !== y
  }
}

function shallowEqual(objA, objB) {
  if (is(objA, objB)) return true

  if (
    typeof objA !== 'object' ||
    objA === null ||
    typeof objB !== 'object' ||
    objB === null
  ) {
    return false
  }

  const keysA = Object.keys(objA)
  const keysB = Object.keys(objB)

  if (keysA.length !== keysB.length) return false

  for (let i = 0; i < keysA.length; i++) {
    if (
      !Object.prototype.hasOwnProperty.call(objB, keysA[i]) ||
      !is(objA[keysA[i]], objB[keysA[i]])
    ) {
      return false
    }
  }

  return true
}

// 1 level deep
var data = [
                    {
                        description: 'equal numbers',
                        value1: 1,
                        value2: 1,
                        equal: true,
                    },
                    {
                        description: 'not equal numbers',
                        value1: 1,
                        value2: 2,
                        equal: false,
                    },
                    {
                        description: 'simple array, same primitive values',
                        value1: [1,2,3,4],
                        value2: [1,2,3,4],
                        equal: true,
                    },
                    {
                        description: 'array, same deep values',
                        value1: [[0],{x: 1},[3]],
                        value2: [[0],{x: 1},[3]],
                        equal: true, // deep equal, not shallow equal
                    },
                    {
                        description: 'equal strings',
                        value1: 'a',
                        value2: 'a',
                        equal: true,
                    },
                    {
                        description: 'big object',
                        value1: {
                            prop1: 'value1',
                            prop2: 'value2',
                            prop3: 'value3',
                            prop4: {
                                subProp1: 'sub value1',
                                subProp2: {
                                    subSubProp1: 'sub sub value1',
                                    subSubProp2: [
                                        1,
                                        2,
                                        { prop2: 1, prop: 2 },
                                        4,
                                        5,
                                    ],
                                },
                            },
                            prop5: 1000,
                            prop6: new Date(2016, 2, 10),
                        },
                        value2: {
                            prop5: 1000,
                            prop3: 'value3',
                            prop1: 'value1',
                            prop2: 'value2',
                            prop6: new Date('2016/03/10'),
                            prop4: {
                                subProp2: {
                                    subSubProp1: 'sub sub value1',
                                    subSubProp2: [
                                        1,
                                        2,
                                        { prop2: 1, prop: 2 },
                                        4,
                                        5,
                                    ],
                                },
                                subProp1: 'sub value1',
                            },
                        },
                        equal: true,
                    },
                ];

Tests:

lodash0
_.isEqual(data[0].value1, data[0].value2)
shallowEqual0
shallowEqual(data[0].value1, data[0].value2)
lodash1
_.isEqual(data[1].value1, data[1].value2)
shallowEqual1
shallowEqual(data[1].value1, data[1].value2)
lodash2
_.isEqual(data[2].value1, data[2].value2)
shallowEqual2
shallowEqual(data[2].value1, data[2].value2)
lodash3
_.isEqual(data[3].value1, data[3].value2)
shallowEqual3
shallowEqual(data[3].value1, data[3].value2)
lodash4
_.isEqual(data[4].value1, data[4].value2)
shallowEqual4
shallowEqual(data[4].value1, data[4].value2)
lodash5
_.isEqual(data[5].value1, data[5].value2)
shallowEqual5
shallowEqual(data[5].value1, data[5].value2)

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

lodash0

7.6M/s

lodash1

7.5M/s

shallowEqual0

7.3M/s

shallowEqual1

7.3M/s

lodash4

7.3M/s

shallowEqual4

7.2M/s

lodash2

4.4M/s

shallowEqual3

2.3M/s

lodash3

1.5M/s

shallowEqual5

1.3M/s

shallowEqual2

1.3M/s

lodash5

525K/s

Fastest: lodash0 (14.4x faster)

View exact numbers

✓ lodash0: 7,551,402 ops/sec
• lodash1: 7,499,310 ops/sec
• shallowEqual0: 7,332,226 ops/sec
• shallowEqual1: 7,296,100 ops/sec
• lodash4: 7,275,140 ops/sec
• shallowEqual4: 7,231,960 ops/sec
• lodash2: 4,366,024 ops/sec
• shallowEqual3: 2,331,990 ops/sec
• lodash3: 1,479,534 ops/sec
• shallowEqual5: 1,334,263 ops/sec
• shallowEqual2: 1,307,712 ops/sec
• lodash5: 524,594 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash0
shallowEqual0
lodash1
shallowEqual1
lodash2
shallowEqual2
lodash3
shallowEqual3
lodash4
shallowEqual4
lodash5
shallowEqual5

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0

Browser/OS: Chrome 133 on Mac OS X 10.15.7

View result in a separate tab

lodash1

79.3M/s

shallowEqual1

79.3M/s

lodash0

78.6M/s

shallowEqual0

76.4M/s

lodash4

75.6M/s

shallowEqual4

64.0M/s

lodash2

8.1M/s

shallowEqual3

7.9M/s

shallowEqual5

7.8M/s

shallowEqual2

5.5M/s

lodash3

1.6M/s

lodash5

440K/s

View exact numbers

Test name	Executions per second
✓ lodash1	79,344,736 Ops/sec
shallowEqual1	79,282,760 Ops/sec
lodash0	78,556,120 Ops/sec
shallowEqual0	76,441,152 Ops/sec
lodash4	75,598,984 Ops/sec
shallowEqual4	63,994,300 Ops/sec
lodash2	8,063,897 Ops/sec
shallowEqual3	7,898,158 Ops/sec
shallowEqual5	7,771,452 Ops/sec
shallowEqual2	5,464,772 Ops/sec
lodash3	1,557,250 Ops/sec
lodash5	440,093 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

lodash isEqual vs redux shallowEqual test 1 (version: 0) Benchmark.js

Comparing performance of: `lodash0 vs shallowEqual0 vs lodash1 vs shallowEqual1 vs lodash2 vs shallowEqual2 vs lodash3 vs shallowEqual3 vs lodash4 vs shallowEqual4 vs lodash5 vs shallowEqual5`

Created: 3 years ago by: Guest

Go to the latest result

lodash0

shallowEqual0

lodash1

shallowEqual1

lodash2

shallowEqual2

lodash3

shallowEqual3

lodash4

shallowEqual4

lodash5

shallowEqual5

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

lodash isEqual vs redux shallowEqual test 1 (version: 0) Benchmark.js

Comparing performance of: lodash0 vs shallowEqual0 vs lodash1 vs shallowEqual1 vs lodash2 vs shallowEqual2 vs lodash3 vs shallowEqual3 vs lodash4 vs shallowEqual4 vs lodash5 vs shallowEqual5

Created: 3 years ago by: Guest

Go to the latest result

lodash0

shallowEqual0

lodash1

shallowEqual1

lodash2

shallowEqual2

lodash3

shallowEqual3

lodash4

shallowEqual4

lodash5

shallowEqual5

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Related benchmarks

Comparing performance of: `lodash0 vs shallowEqual0 vs lodash1 vs shallowEqual1 vs lodash2 vs shallowEqual2 vs lodash3 vs shallowEqual3 vs lodash4 vs shallowEqual4 vs lodash5 vs shallowEqual5`