Benchmark: Deep merge lodash 4.6.2 vs ramda vs deepmerge

HTML Preparation code:

<script src="//cdn.jsdelivr.net/npm/ramda@latest/dist/ramda.min.js"></script>
<script src="https://raw.githubusercontent.com/lodash/lodash/4.6.2-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:

Ramda.mergeDeepRight
R.mergeDeepRight(obj1, obj2)
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
Ramda.mergeDeepRight
Lodash.merge
deepmerge

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36

Browser/OS: Chrome 98 on Windows

View result in a separate tab

Test name	Executions per second
Ramda.mergeDeepRight	370994.2 Ops/sec
Lodash.merge	58056.3 Ops/sec
deepmerge	40208.7 Ops/sec

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

LLMs can make mistakes. Check important info.

To provide an answer, I'll need to combine the provided data into a structured format and then perform some analysis.

**Combining Data**

Here's the combined data:

```json
{
  "Data": {
    "Html Preparation Code": "<script src=\"//cdn.jsdelivr.net/npm/ramda@latest/dist/ramda.min.js\"></script>\r\n<script src=\"https://raw.githubusercontent.com/lodash/lodash/4.6.2-npm/lodash.js\"></script>\r\n<script src=\"https://unpkg.com/deepmerge/dist/umd.js\"></script>",
    "Individual test cases": [
      {
        "Benchmark Definition": "R.mergeDeepRight(obj1, obj2)",
        "Test Name": "Ramda.mergeDeepRight"
      },
      {
        "Benchmark Definition": "_.merge(obj1, obj2)",
        "Test Name": "Lodash.merge"
      },
      {
        "Benchmark Definition": "deepmerge(obj1, obj2)",
        "Test Name": "deepmerge"
      }
    ],
    "Latest benchmark result": [
      {
        "RawUAString": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
        "Browser": "Chrome 98",
        "DevicePlatform": "Desktop",
        "OperatingSystem": "Windows",
        "ExecutionsPerSecond": 370994.15625,
        "TestName": "Ramda.mergeDeepRight"
      },
      {
        "RawUAString": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
        "Browser": "Chrome 98",
        "DevicePlatform": "Desktop",
        "OperatingSystem": "Windows",
        "ExecutionsPerSecond": 58056.2890625,
        "TestName": "Lodash.merge"
      },
      {
        "RawUAString": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36",
        "Browser": "Chrome 98",
        "DevicePlatform": "Desktop",
        "OperatingSystem": "Windows",
        "ExecutionsPerSecond": 40208.6640625,
        "TestName": "deepmerge"
      }
    ]
  }
}
```

**Analysis**

The provided data seems to be related to benchmarking and testing of different JavaScript libraries for merging objects.

To provide a meaningful answer, I would need more context or information about what you're trying to achieve with this data. However, I can offer some suggestions:

1. **Benchmark Comparison**: You could analyze the latest benchmark results to compare the performance of Ramda, Lodash, and deepmerge for different scenarios.
2. **Library Performance**: You could investigate which library performs better in terms of execution speed, memory usage, or other factors.
3. **Error Handling**: You could look into how each library handles errors or edge cases when merging objects.

Please provide more context or clarify what you're trying to achieve with this data, and I'll be happy to assist further!

Related benchmarks:

Deep merge lodash 4.6.2 vs ramda vs deepmerge (version: 0)

Comparing performance of: Ramda.mergeDeepRight vs Lodash.merge vs deepmerge

Created: 2 years ago by: Guest

Jump to the latest result

Ramda.mergeDeepRight

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):