define-data-property ^{[![Version Badge][npm-version-svg]][package-url]}

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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

``javascript
var defineDataProperty = require('define-data-property');
var assert = require('assert');

var obj = {};
defineDataProperty(obj, 'key', 'value');
defineDataProperty(
obj,
'key2',
'value',
true, // nonEnumerable, optional
false, // nonWritable, optional
true, // nonConfigurable, optional
false // loose, optional
);

assert.deepEqual(
Object.getOwnPropertyDescriptors(obj),
{
key: {
configurable: true,
enumerable: true,
value: 'value',
writable: true,
},
key2: {
configurable: false,
enumerable: false,
value: 'value',
writable: true,
},
}
);
``

[package-url]: https://npmjs.org/package/define-data-property
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