json-stable-stringify-without-jsonify vs json-stable-stringify vs json-stringify-deterministic
Deterministic JSON Stringification Comparison
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What's Deterministic JSON Stringification?

Deterministic JSON stringification libraries ensure that the JSON output is consistent and predictable, regardless of the order in which properties are defined in an object. This is particularly important for use cases such as generating hashes, digital signatures, or caching, where even a small change in the output can lead to significant differences. These libraries achieve this by sorting the object properties in a defined order (usually lexicographically) before converting them to a JSON string. This guarantees that the same input will always produce the same output, making the process deterministic. json-stable-stringify is a popular library that provides stable stringification of JSON objects by recursively sorting their properties. It handles arrays, nested objects, and ensures that the output is consistent across different runs. json-stable-stringify-without-jsonify is a variant of the original library that avoids using JSON.stringify internally, providing a more controlled stringification process. This can be useful in scenarios where you want to minimize reliance on the built-in JSON methods or need more granular control over the stringification process. json-stringify-deterministic is another library focused on deterministic stringification, offering similar functionality with an emphasis on performance and memory efficiency. It is designed to handle large objects and deep nesting while maintaining a consistent output. Each of these libraries has its strengths, and the choice depends on your specific requirements regarding performance, control, and dependency management.

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json-stable-stringify-without-jsonify47,589,401
12-19 years agoMIT
json-stable-stringify8,079,662
7136.4 kB75 months agoMIT
json-stringify-deterministic201,107
4011.6 kB02 years agoMIT
Feature Comparison: json-stable-stringify-without-jsonify vs json-stable-stringify vs json-stringify-deterministic

Determinism

  • json-stable-stringify-without-jsonify:

    json-stable-stringify-without-jsonify also guarantees deterministic output by sorting properties, but it does so without using the built-in JSON.stringify method. This can lead to more predictable behavior in environments where the native JSON implementation may vary.

  • json-stable-stringify:

    json-stable-stringify ensures that the output is deterministic by recursively sorting the properties of objects before stringification. This means that no matter how many times you stringify the same object, the output will always be the same as long as the input remains unchanged.

  • json-stringify-deterministic:

    json-stringify-deterministic provides deterministic stringification by sorting object properties. It is designed to handle edge cases and ensure that the output remains consistent across different runs, making it reliable for hashing and signing.

Performance

  • json-stable-stringify-without-jsonify:

    json-stable-stringify-without-jsonify may offer better performance in scenarios where avoiding JSON.stringify leads to faster execution, especially in cases where custom stringification logic is implemented.

  • json-stable-stringify:

    json-stable-stringify is efficient for most use cases, but its performance can degrade with very large or deeply nested objects due to the recursive nature of its property sorting.

  • json-stringify-deterministic:

    json-stringify-deterministic is optimized for performance, particularly when handling large objects and arrays. It aims to minimize memory usage and execution time, making it suitable for applications where performance is a concern.

Control Over Stringification

  • json-stable-stringify-without-jsonify:

    json-stable-stringify-without-jsonify offers more control over how objects are stringified, allowing developers to customize the process and implement their own logic if needed.

  • json-stable-stringify:

    json-stable-stringify provides limited control over the stringification process, as it follows a predefined method of sorting properties and converting them to strings.

  • json-stringify-deterministic:

    json-stringify-deterministic allows for some customization, but it primarily focuses on providing a fast and reliable stringification process without extensive configurability.

Handling Circular References

  • json-stable-stringify-without-jsonify:

    json-stable-stringify-without-jsonify also does not handle circular references, but its design allows for easier implementation of custom logic to detect and manage cycles during stringification.

  • json-stable-stringify:

    json-stable-stringify does not handle circular references out of the box, which can lead to errors if an object contains cycles. Developers need to ensure that the objects being stringified are free of circular references.

  • json-stringify-deterministic:

    json-stringify-deterministic includes built-in handling for circular references, which prevents errors and allows for more robust stringification of complex objects.

Ease of Use: Code Examples

  • json-stable-stringify:

    Deterministic stringification with json-stable-stringify

    const stringify = require('json-stable-stringify');
const obj = { b: 2, a: 1, nested: { d: 4, c: 3 } };
const jsonString = stringify(obj);
console.log(jsonString);
// Output: {
How to Choose: json-stable-stringify-without-jsonify vs json-stable-stringify vs json-stringify-deterministic
  • json-stable-stringify-without-jsonify:

    Choose json-stable-stringify-without-jsonify if you require a stringification process that does not rely on JSON.stringify, allowing for more control over how objects are converted to strings. This is ideal for specialized scenarios where you want to avoid the built-in JSON methods.

  • json-stable-stringify:

    Choose json-stable-stringify if you need a reliable and widely-used solution for deterministic JSON stringification that handles nested objects and arrays gracefully. It is suitable for most use cases and has a proven track record.

  • json-stringify-deterministic:

    Choose json-stringify-deterministic if you are looking for a performance-oriented library that provides deterministic stringification with a focus on handling large and complex objects efficiently. It is a good choice for applications where memory usage and speed are critical.

Similar Npm Packages to json-stable-stringify-without-jsonify

json-stable-stringify-without-jsonify is a library that provides a stable JSON stringification method, ensuring that the output is consistent and predictable regardless of the order of keys in the input object. This is particularly useful for scenarios where you need to compare JSON objects or generate consistent hashes for caching purposes. By eliminating the need for the JSON.stringify method, this library offers a more controlled approach to stringifying JSON data.

An alternative to this package is json-stable-stringify. This library also provides a stable stringification method, ensuring that the output is consistent by sorting the keys of the input object. It is widely used in various applications where consistent JSON output is required, such as in testing, caching, or when generating unique identifiers based on object content. While both libraries serve a similar purpose, the key difference lies in their implementation and any additional features they may offer.

To see how json-stable-stringify-without-jsonify compares with json-stable-stringify, check out the comparison: Comparing json-stable-stringify vs json-stable-stringify-without-jsonify.

Similar Npm Packages to json-stable-stringify

json-stable-stringify is a library that provides a stable and predictable way to stringify JavaScript objects into JSON format. Unlike the native JSON.stringify method, which can produce different string outputs for the same object due to the order of properties, json-stable-stringify ensures that the output is consistent by sorting the object keys. This feature is particularly useful in scenarios where you need to generate consistent hashes or signatures for objects, such as in caching or data comparison.

While json-stable-stringify is a solid choice for achieving stable JSON stringification, there are alternatives available in the ecosystem. One notable alternative is:

  • json-stable-stringify-without-jsonify is a variation of the original json-stable-stringify library that omits the dependency on the jsonify library. This makes it a lightweight option for developers who want to achieve stable stringification without additional overhead. It retains the core functionality of sorting object keys to ensure consistent output, making it suitable for similar use cases where stability in JSON representation is required.

For a detailed comparison of these two packages, you can visit: Comparing json-stable-stringify vs json-stable-stringify-without-jsonify.

Similar Npm Packages to json-stringify-deterministic

json-stringify-deterministic is a JavaScript library that provides a deterministic way to stringify JavaScript objects into JSON. This means that it guarantees the same input will always produce the same output, which is particularly useful for scenarios like caching, hashing, or comparing objects. The library ensures that the properties of objects are serialized in a consistent order, making it easier to generate predictable and repeatable results.

While json-stringify-deterministic is a solid choice for deterministic JSON stringification, there are alternative libraries that offer similar functionality. Here are a few noteworthy alternatives:

  • json-stable-stringify is a library that also provides deterministic stringification of JavaScript objects. It sorts the properties of objects in a consistent order before converting them to JSON, ensuring that the output is predictable. This library is widely used and has a straightforward API, making it easy to integrate into existing projects. If you need a reliable way to stringify objects while maintaining property order, json-stable-stringify is a great option.

  • json-stable-stringify-without-jsonify is a variant of json-stable-stringify that avoids using the JSON.stringify method for serializing objects. This library provides a similar deterministic stringification process but is designed for use cases where you want to avoid the default JSON serialization behavior. It can be particularly useful when working with objects that may include circular references or other non-serializable structures.

To explore how json-stringify-deterministic compares with json-stable-stringify and json-stable-stringify-without-jsonify, check out the comparison: Comparing json-stable-stringify vs json-stable-stringify-without-jsonify vs json-stringify-deterministic.

README for json-stable-stringify-without-jsonify

json-stable-stringify

This is the same as https://github.com/substack/json-stable-stringify but it doesn't depend on libraries without licenses (jsonify).

deterministic version of JSON.stringify() so you can get a consistent hash from stringified results

You can also pass in a custom comparison function.

browser support

build status

example

var stringify = require('json-stable-stringify');
var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
console.log(stringify(obj));

output:

{"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8}

methods

var stringify = require('json-stable-stringify')

var str = stringify(obj, opts)

Return a deterministic stringified string str from the object obj.

options

cmp

If opts is given, you can supply an opts.cmp to have a custom comparison function for object keys. Your function opts.cmp is called with these parameters:

opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue })

For example, to sort on the object key names in reverse order you could write:

var stringify = require('json-stable-stringify');

var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
var s = stringify(obj, function (a, b) {
    return a.key < b.key ? 1 : -1;
});
console.log(s);

which results in the output string:

{"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3}

Or if you wanted to sort on the object values in reverse order, you could write:

var stringify = require('json-stable-stringify');

var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 };
var s = stringify(obj, function (a, b) {
    return a.value < b.value ? 1 : -1;
});
console.log(s);

which outputs:

{"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10}

space

If you specify opts.space, it will indent the output for pretty-printing. Valid values are strings (e.g. {space: \t}) or a number of spaces ({space: 3}).

For example:

var obj = { b: 1, a: { foo: 'bar', and: [1, 2, 3] } };
var s = stringify(obj, { space: '  ' });
console.log(s);

which outputs:

{
  "a": {
    "and": [
      1,
      2,
      3
    ],
    "foo": "bar"
  },
  "b": 1
}

replacer

The replacer parameter is a function opts.replacer(key, value) that behaves the same as the replacer from the core JSON object.

install

With npm do:

npm install json-stable-stringify

license

MIT

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