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  • License MIT

defines static object attributes using Object.defineProperties

Package Exports

  • static-props

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (static-props) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

static-props

defines static object attributes using Object.defineProperties

js-standard-style

Usage

Let's create a classic Point2d class and add constant attributes.

'use strict'

var staticProps = require('static-props')

class Point2d {
  constructor (x, y, label) {
    this.x = x
    this.y = y

    // Suppose you have few static attributes in your class.
    const color = 'red'

    // Add constant attributes quickly.
    staticProps(this)({label, color})
  }
}

After instantiating the class, we can check that label and color cannot be changed.

var p = new Point(1, 2)

// Trying to modify a static prop will throw as you expect.
p.label = 'B'
// TypeError: Cannot assign to read only property 'label' of #<Point2d>

If you want to add a static attribute class, you can also do

staticProps(Point2d)({ dim: 2 })

so you can access it with

console.log(Point2d.dim) // 2

License

MIT