Benchmark: Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings II

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.foo = {
  adventure: {
    is: {
      on: {
        its: {
          way: {
            or: [{
              we: {
                may: {
                  still: {
                    "end up": { in : {
                        a: {
                          trap: "ahahahahah"
                        }
                      }
                    }
                  }
                }
              }
            }, {
              we: {
                may: {
                  succeed: {
                    to: {
                      the: {
                        end: "yeaaaaaaaah"
                      }
                    }
                  }
                }
              }
            }]
          }
        }
      }
    }
  }
};
window.bar = {
  adventure: {
    is: {
      on: {
        its: {
          way: {
            or: [{
              we: {
                may: {
                  still: {
                    "end up": { in : {
                        a: {
                          trap: "ahahahahah"
                        }
                      }
                    }
                  }
                }
              }
            }, {
              we: {
                may: {
                  succeed: {
                    to: {
                      the: {
                        end: "yeaaaaaaaah"
                      }
                    }
                  }
                }
              }
            }]
          }
        }
      }
    }
  }
};

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual
JSON.stringify

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Definition**

The benchmark is designed to compare the performance of two equality comparison functions: `lodash.isEqual` and the built-in `JSON.stringify` method. The test specifically targets shallow arrays of strings, with a complex nested structure (think "deeply nested JSON-like object").

**Options Being Compared**

Two options are being compared:

1. **Lodash.isEqual**: A utility function from the Lodash library, which recursively compares two objects for deep equality.
2. **JSON.stringify Equality Comparison**: Direct comparison using `JSON.stringify`, which converts both objects to a string representation and then compares them lexicographically.

**Pros and Cons of Each Approach**

1. **Lodash.isEqual**:
	* Pros: More accurate, as it recursively checks all properties for deep equality.
	* Cons: May be slower due to recursive calls, and its performance can degrade with very large input sizes.
2. **JSON.stringify Equality Comparison**:
	* Pros: Fast and efficient, as stringification is a simple operation that can be parallelized.
	* Cons: Less accurate, as it relies on lexicographical comparison, which may not capture nuances of deep equality.

**Library Used**

The benchmark uses the Lodash library (version 4.17.4), which provides the `isEqual` function for recursive object comparison.

**Special JS Features or Syntax**

None explicitly mentioned in this benchmark. However, it's worth noting that MeasureThat.net can handle various JavaScript features and syntax, including ES6+ and Node.js-specific APIs.

**Other Alternatives**

If you need alternative equality comparison functions, consider:

1. **JSON.stringify**: While not as accurate as `lodash.isEqual`, it's a good choice for simple string comparisons.
2. **Object.keys() and Array.prototype.every()**: For arrays or objects with a limited number of properties, this approach can be efficient.
3. **Underscore.js (cloneDeep)**: Another popular utility library providing similar functionality to Lodash.

Keep in mind that the best approach depends on your specific use case and performance requirements.

Now you know what's being tested in this benchmark!

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.20

Browser/OS: Opera 91 on Windows 7

View result in a separate tab

Test name	Executions per second
_.isEqual	29690.8 Ops/sec
JSON.stringify	83268.9 Ops/sec

Related benchmarks:

Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings II (version: 0)

Test on isEqual performance

Comparing performance of: _.isEqual vs JSON.stringify

Created: 4 years ago by: Guest

Jump to the latest result

_.isEqual

JSON.stringify

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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