nano-copy

Superfast, super small (1,461 bytes minimized, 709 gzipped) JavaScript object deep copy. Comparable to fast-copy in speed across multiple test runs.

npm install nano-copy

const nanoCopy = require("nano-copy");

or

<script src="./browser/nano-copy.min.js" type="application/javascript"></script>

[ArrayBuffer,BigInt,Blob,Boolean,Buffer,DataView,Date,Error,Int8Array,Int16Array,Int32Array,Map,Number,RegExp,Set,String,Uint8Array,Uint16Array,Uint32Array]

Blob, Buffer and DataView are platform dependent and are included or excluded accordingly.

1. There is a static from method on the class constructor that creates a deep copy.

Or

2. Object.create(Object.getPrototypeOf(source)) plus interating over all entries in the source and assigning their copies to the newly created object is correct.

Types returned by typeof plus,

[Boolean,Error,Number,Promise,String,Symbol,WeakMap,WeakSet]

1. Non-enumerable properties

const copy = nanoCopy(source);

Or, to copy non-standard properties on Arrays and other built-in classes pass an optional argument. Note, there is a negative performance impact on long arrays.

const copy = nanoCopy(source,{nonStandard:true);

Note, ALL JavaScript benchmarks in a browser or Node.js or Deno should be taken with a grain of salt when packages are within 10 ro 15% of each other due to browser, operating system, and garbage collection driven impacts.

2024-12-09 v0.1.1 Fixed issue related to objects potentially not having a constructor. Re-ran benchmarks.

2020-12-13 v0.1.0 Added support for non-standard properties on Arrays and clonable objects.

2020-12-10 v0.0.4b Documentation fixes.

2020-12-10 v0.0.3b Fixed node export. Added benchee benchmarks.

2020-12-10 v0.0.2b Replaced Object.entries(data) with for(const key in data). Faster and gets inherited properties.

2020-12-09 v0.0.1b Initial public release (BETA)