meta-data

Experimental Javascript library to assign metadata to Objects and Arrays.

Inspired by Clojure's metadata.

Installation

npm install meta-data

Properties

1. Metadata is non-enumerable. It cannot be looped over.
2. Metadata does not impact equality. Two objects that differ only in metadata are equal.
3. Attaching metadata create a new object. An object with different metadata is a different object.

Usage

meta = require('meta-data')
let arr = meta([1, 2, 3], { source: 'clojure' })
for (let n of arr) {
  console.log(n) // 1...2...3...
}
console.log(arr.source) // clojure