time-to-botec/js/node_modules/@stdlib/assert/is-enumerable-property/README.md
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00

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# isEnumerableProperty
> Test if an object's own property is enumerable.
<section class="usage">
## Usage
```javascript
var isEnumerableProperty = require( '@stdlib/assert/is-enumerable-property' );
```
#### isEnumerableProperty( value, property )
Returns a `boolean` indicating if a `value` has an enumerable `property`.
```javascript
var value = {
'beep': 'boop'
};
var bool = isEnumerableProperty( value, 'beep' );
// returns true
bool = isEnumerableProperty( value, 'constructor' );
// returns false
```
</section>
<!-- /.usage -->
<section class="notes">
## Notes
- In contrast to the native [Object.prototype.propertyIsEnumerable][mdn-object-property-is-enumerable], this function does **not** throw when provided `null` or `undefined`. Instead, the function returns `false`.
```javascript
var bool = isEnumerableProperty( null, 'a' );
// returns false
bool = isEnumerableProperty( void 0, 'a' );
// returns false
```
- Value arguments other than `null` or `undefined` are coerced to `objects`.
```javascript
var bool = isEnumerableProperty( 'beep', '1' );
// returns true
```
- Property arguments are coerced to `strings`.
```javascript
var value = {
'null': false
};
var bool = isEnumerableProperty( value, null );
// returns true
value = {
'[object Object]': false
};
bool = isEnumerableProperty( value, {} );
// returns true
```
</section>
<!-- /.notes -->
<section class="examples">
## Examples
<!-- eslint-disable object-curly-newline -->
<!-- eslint no-undef: "error" -->
```javascript
var isEnumerableProperty = require( '@stdlib/assert/is-enumerable-property' );
var bool = isEnumerableProperty( { 'a': 'b' }, 'a' );
// returns true
bool = isEnumerableProperty( [ 'a' ], 0 );
// returns true
bool = isEnumerableProperty( [ 'a' ], 'length' );
// returns false
bool = isEnumerableProperty( {}, 'toString' );
// returns false
bool = isEnumerableProperty( {}, 'hasOwnProperty' );
// returns false
bool = isEnumerableProperty( null, 'a' );
// returns false
bool = isEnumerableProperty( void 0, 'a' );
// returns false
bool = isEnumerableProperty( { 'null': false }, null );
// returns true
bool = isEnumerableProperty( { '[object Object]': false }, {} );
// returns true
```
</section>
<!-- /.examples -->
<section class="links">
[mdn-object-property-is-enumerable]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
</section>
<!-- /.links -->