@fav/prop.define v1.0.0

@fav/prop.define

Defines object properities.

"fav" is an abbreviation of "favorite" and also the acronym of "for all versions". This package is intended to support all Node.js versions and many browsers as possible. At least, this package supports Node.js >= v0.10 and major Web browsers: Chrome, Firefox, IE11, Edge, Vivaldi and Safari.

Install

To install from npm:

$ npm install --save @fav/prop.define

NOTE: npm < 2.7.0 does not support scoped package, but old version Node.js supports it. So when you use such older npm, you should download this package from github.com, and move it in node_modules/@fav/prop.define/ directory manually.

Usage

For Node.js:

var define = require('@fav/prop.define');
var obj = {};

define.immutable(obj, 'HIDDEN_CONSTANT_VALUE', 123);
console.log(obj.HIDDEN_CONSTANT_VALUE); // => 123

define.mutable(obj, 'hiddenVariable', 456);
console.log(obj.hiddenVariable); // => 456

obj.func = function() {
  console.log(this.HIDDEN_CONSTANT_VALUE);
};
obj.func(); // => 123

define.override(obj, function func() {
  func.$uper();
  console.log(this.hiddenVariable);
});
obj.func();
// => 123
//    456

For Web browsers:

<script src="fav.prop.define.min.js"></script>
<script>
var define = fav.prop.define;
define.immutable(obj, 'HIDDEN_CONSTANT_VALUE', 123);
console.log(obj.HIDDEN_CONSTANT_VALUE); // => 123

define.mutable(obj, 'hiddenVariable', 456);
console.log(obj.hiddenVariable); // => 456

obj.func = function() {
  console.log(this.HIDDEN_CONSTANT_VALUE);
};
obj.func(); // => 123

define.override(obj, function func() {
  func.$uper();
  console.log(this.hiddenVariable);
});
obj.func();
// => 123
//    456
</script>

API

define.immutable(obj, name, value) : void

Defines an read-only and unenumerable property to the specified object.

Parameters:

define.mutable(obj, name, value) : void

Defines an writable and unenumerable property to the specified object.

Parameters:

define.override(obj, name, fn) : void

Redefines a property function of the specified object.

The original function can be accessed by name.$uper.

define.override(obj, namedFn) : void

Redefines a property function of the specified object with named function.

The original function can be accessed by namedFn.$uper.

Checked

Node.js (11〜)

Node.js (4〜10)

io.js (1〜3)

Node.js (〜0.12)

Web browsers

License

Copyright (C) 2018 Takayuki Sato

This program is free software under MIT License. See the file LICENSE in this distribution for more details.