Benchmark: lodash.merge vs deepmerge

HTML Preparation code:

<script src="https://raw.githubusercontent.com/lodash/lodash/4.17.15-npm/lodash.js"></script>
<script src="https://unpkg.com/deepmerge/dist/umd.js"></script>

Script Preparation code:

var obj1 = [
	{
		"id": "0001",
		"type": "donut",
		"name": "Cake",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Regular" },
						{ "id": "1002", "type": "Chocolate" },
						{ "id": "1003", "type": "Blueberry" },
						{ "id": "1004", "type": "Devil's Food" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "None" },
				{ "id": "5002", "type": "Glazed" },
				{ "id": "5005", "type": "Sugar" },
				{ "id": "5007", "type": "Powdered Sugar" },
				{ "id": "5006", "type": "Chocolate with Sprinkles" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Maple" }
			]
	},
	{
		"id": "0002",
		"type": "donut",
		"name": "Raised",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Regular" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "None" },
				{ "id": "5002", "type": "Glazed" },
				{ "id": "5005", "type": "Sugar" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Maple" }
			]
	},
	{
		"id": "0003",
		"type": "donut",
		"name": "Old Fashioned",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Regular" },
						{ "id": "1002", "type": "Chocolate" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "None" },
				{ "id": "5002", "type": "Glazed" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Maple" }
			]
	}
]

var obj2 = [
	{
		"id": "0001",
		"type": "donut",
		"name": "Cake",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Overwritten" },
						{ "id": "1002", "type": "Chocolate" },
						{ "id": "1003", "type": "Overwritten" },
						{ "id": "1004", "type": "Devil's Food" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "Overwritten" },
				{ "id": "5002", "type": "Overwritten" },
				{ "id": "5005", "type": "Sugar" },
				{ "id": "5007", "type": "Powdered Sugar" },
				{ "id": "5006", "type": "Chocolate with Sprinkles" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Overwritten" }
			]
	},
	{
		"id": "0002",
		"type": "Overwritten",
		"name": "Raised",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Overwritten" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "None" },
				{ "id": "5002", "type": "Overwritten" },
				{ "id": "5005", "type": "Sugar" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Maple" }
			]
	},
	{
		"id": "0003",
		"type": "Overwritten",
		"name": "Old Fashioned",
		"ppu": 0.55,
		"batters":
			{
				"batter":
					[
						{ "id": "1001", "type": "Overwritten" },
						{ "id": "1002", "type": "Chocolate" }
					]
			},
		"topping":
			[
				{ "id": "5001", "type": "None" },
				{ "id": "5002", "type": "Glazed" },
				{ "id": "5003", "type": "Chocolate" },
				{ "id": "5004", "type": "Maple" }
			]
	}
]

Tests:

Lodash.merge
_.merge(obj1, obj2)
deepmerge
deepmerge(obj1, obj2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash.merge
deepmerge

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Windows

View result in a separate tab

Test name	Executions per second
Lodash.merge	54793.9 Ops/sec
deepmerge	41231.1 Ops/sec

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

LLMs can make mistakes. Check important info.

It seems like you're trying to prepare some test data for benchmarking. I'll help you parse and format the data.

Here's the parsed data:

**Objects**

1. `obj1`:
```json
{
    "id": "5005",
    "type": "Sugar"
},
{
    "id": "5007",
    "type": "Powdered Sugar"
},
{
    "id": "5006",
    "type": "Chocolate with Sprinkles"
},
{
    "id": "5003",
    "type": "Chocolate"
},
{
    "id": "5004",
    "type": "Overwritten"
}
```

2. `obj2`:
```json
{
    "id": "0002",
    "type": "Overwritten",
    "name": "Raised",
    "ppu": 0.55,
    "batters": {
        "batter": [
            { "id": "1001", "type": "Overwritten" }
        ]
    },
    "topping": [
        { "id": "5001", "type": "None" },
        { "id": "5002", "type": "Overwritten" },
        { "id": "5005", "type": "Sugar" },
        { "id": "5003", "type": "Chocolate" },
        { "id": "5004", "type": "Maple" }
    ]
}
```

3. `obj3`:
```json
{
    "id": "0003",
    "type": "Overwritten",
    "name": "Old Fashioned",
    "ppu": 0.55,
    "batters": {
        "batter": [
            { "id": "1001", "type": "Overwritten" },
            { "id": "1002", "type": "Chocolate" }
        ]
    },
    "topping": [
        { "id": "5001", "type": "None" },
        { "id": "5002", "type": "Glazed" },
        { "id": "5003", "type": "Chocolate" },
        { "id": "5004", "type": "Maple" }
    ]
}
```

**Individual Test Cases**

1. `Lodash.merge(obj1, obj2)`
2. `deepmerge(obj1, obj2)`

**Latest Benchmark Result**

1. Lodash.merge
	* Raw UA String: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36`
	* Browser: Chrome 129
	* Device Platform: Desktop
	* Operating System: Mac OS X 10.15.7
	* Executions Per Second: 96050.7734375
	* Test Name: Lodash.merge
2. deepmerge
	* Raw UA String: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36`
	* Browser: Chrome 129
	* Device Platform: Desktop
	* Operating System: Mac OS X 10.15.7
	* Executions Per Second: 60366.91015625
	* Test Name: deepmerge

Related benchmarks:

lodash.merge vs deepmerge (version: 0)

Comparing performance of: Lodash.merge vs deepmerge

Created: 4 years ago by: Guest

Jump to the latest result

Lodash.merge

deepmerge

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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