@diahkomalasarinpm/ratione-quidem-rerum

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

The three non* argument can also be passed null, which will use the existing state if available.

The loose argument will mean that if you attempt to set a non-normal data property, in an environment without descriptor support, it will fall back to normal assignment.

Usage

1var defineDataProperty = require('@diahkomalasarinpm/ratione-quidem-rerum');
2var assert = require('assert');
3
4var obj = {};
5defineDataProperty(obj, 'key', 'value');
6defineDataProperty(
7	obj,
8	'key2',
9	'value',
10	true, // nonEnumerable, optional
11	false, // nonWritable, optional
12	true, // nonConfigurable, optional
13	false // loose, optional
14);
15
16assert.deepEqual(
17	Object.getOwnPropertyDescriptors(obj),
18	{
19		key: {
20			configurable: true,
21			enumerable: true,
22			value: 'value',
23			writable: true,
24		},
25		key2: {
26			configurable: false,
27			enumerable: false,
28			value: 'value',
29			writable: true,
30		},
31	}
32);