Benchmark: Lodash.get vs safeGet vs get vs optional chaining vs youDontNeedGet

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var person = {name: 'Frederick', lastName: 'Corcino Alejo', nested: {name: 'test'}};

function safeGet(obj, path, defaultValue) {
  return path.split('.').reduce((xs, x) => (xs && xs[x]) ? xs[x] : defaultValue, obj);
}

function get(obj, path, defValue) {
  // If path is not defined or it has false value
  if (!path) return undefined
  // Check if path is string or array. Regex : ensure that we do not have '.' and brackets.
  // Regex explained: https://regexr.com/58j0k
  const pathArray = Array.isArray(path) ? path : path.match(/([^[.\]])+/g)
  // Find value
  const result = pathArray.reduce(
    (prevObj, key) => prevObj && prevObj[key],
    obj
  )
  // If found value is undefined return default value; otherwise return the value
  return result === undefined ? defValue : result
}

// Another "get" implementation
// https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_get
function youDontNeedGet(obj, path, defaultValue = undefined) {
  const travel = regexp =>
    String.prototype.split
      .call(path, regexp)
      .filter(Boolean)
      .reduce((res, key) => (res !== null && res !== undefined ? res[key] : res), obj);
  const result = travel(/[,[\]]+?/) || travel(/[,[\].]+?/);
  return result === undefined || result === obj ? defaultValue : result;
};

Tests:

Lodash get
_.get(person, 'name', ''); _.get(person, 'nested.name', '');
safeGet
safeGet(person, 'name', ''); safeGet(person, 'nested.name', '');
optional chaining
person?.name; person?.nested?.name;
get
get(person, 'name', null) get(person, 'nested.name', null)
youDontNeedGet
youDontNeedGet(person, 'name', null) youDontNeedGet(person, 'nested.name', null)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash get
safeGet
optional chaining
get
youDontNeedGet

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of what's being tested in this benchmark.

**Overview**

The benchmark measures the performance difference between four different approaches to access nested properties in an object: Lodash's `_.get`, `safeGet`, and two alternative implementations (`youDontNeedGet` and a simple `get` function). The test cases use a person object with nested properties to demonstrate these approaches.

**Options compared**

The benchmark compares the following options:

1. **Lodash `.get`**: Uses Lodash's `_.get` method, which is designed to access nested properties in an object.
2. **safeGet**: A custom implementation that uses a simple recursive approach to access nested properties.
3. **optional chaining**: The dot notation (`person?.name`) and optional chaining (`person?.nested?.name`) syntax, which are available in modern JavaScript engines (including Chrome 105).
4. **youDontNeedGet**: Another alternative implementation that uses a regular expression to split the property path into an array of keys.

**Pros and Cons**

Here's a brief summary of each approach:

* **Lodash `.get`**:
	+ Pros: Well-designed, efficient, and widely adopted.
	+ Cons: Requires Lodash library inclusion.
* **safeGet**:
	+ Pros: Custom implementation can be optimized for performance.
	+ Cons: Recursive approach may lead to stack overflow errors for deep nested properties.
* **optional chaining**:
	+ Pros: Simple, readable, and efficient.
	+ Cons: Limited support in older JavaScript engines (pre-Chrome 105).
* **youDontNeedGet**:
	+ Pros: Creative use of regular expressions to split the property path.
	+ Cons: Less readable than other approaches, and may lead to performance issues.

**Other considerations**

The benchmark measures the executions per second for each test case. This suggests that the goal is to determine which approach provides the best performance in terms of speed.

**Library and syntax usage**

* Lodash's `_.get` method uses a dot notation (`_.get(person, 'name', '')`) to access nested properties.
* The `safeGet` implementation uses a simple recursive approach with a loop.
* Optional chaining uses the dot notation (`person?.name`) followed by the optional chaining operator (`?.`).
* The `youDontNeedGet` implementation uses a regular expression to split the property path into an array of keys.

**Alternatives**

If you're interested in exploring alternative approaches, here are some options:

* Use the `in` operator to access nested properties, e.g., `person['nested']['name']`.
* Use a library like Underscore.js (similar to Lodash) or a custom implementation with a loop.
* Experiment with other optional chaining syntax variations, such as using bracket notation (`person['nested'].name`) instead of dot notation.

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

Related benchmarks:

Lodash.get vs safeGet vs get vs optional chaining vs youDontNeedGet (version: 1)

Comparing performance of: Lodash get vs safeGet vs optional chaining vs get vs youDontNeedGet

Created: 3 years ago by: Registered User

Jump to the latest result

Lodash get

safeGet

optional chaining

get

youDontNeedGet

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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