You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.4 KiB
Markdown
68 lines
2.4 KiB
Markdown
7 months ago
|
# define-data-property <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
|
||
|
|
|
||
|
|
[![github actions][actions-image]][actions-url]
|
||
|
|
[![coverage][codecov-image]][codecov-url]
|
||
|
|
[![License][license-image]][license-url]
|
||
|
|
[![Downloads][downloads-image]][downloads-url]
|
||
|
|
|
||
|
|
[![npm badge][npm-badge-png]][package-url]
|
||
|
|
|
||
|
|
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
|
||
|
|
[npm-version-svg]: https://versionbadg.es/ljharb/define-data-property.svg
|
||
|
|
[deps-svg]: https://david-dm.org/ljharb/define-data-property.svg
|
||
|
|
[deps-url]: https://david-dm.org/ljharb/define-data-property
|
||
|
|
[dev-deps-svg]: https://david-dm.org/ljharb/define-data-property/dev-status.svg
|
||
|
|
[dev-deps-url]: https://david-dm.org/ljharb/define-data-property#info=devDependencies
|
||
|
|
[npm-badge-png]: https://nodei.co/npm/define-data-property.png?downloads=true&stars=true
|
||
|
|
[license-image]: https://img.shields.io/npm/l/define-data-property.svg
|
||
|
|
[license-url]: LICENSE
|
||
|
|
[downloads-image]: https://img.shields.io/npm/dm/define-data-property.svg
|
||
|
|
[downloads-url]: https://npm-stat.com/charts.html?package=define-data-property
|
||
|
|
[codecov-image]: https://codecov.io/gh/ljharb/define-data-property/branch/main/graphs/badge.svg
|
||
|
|
[codecov-url]: https://app.codecov.io/gh/ljharb/define-data-property/
|
||
|
|
[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/ljharb/define-data-property
|
||
|
|
[actions-url]: https://github.com/ljharb/define-data-property/actions
|