time-to-botec/squiggle/node_modules/@stdlib/utils/nonenumerable-property-symbols-in/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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# nonEnumerablePropertySymbolsIn
> Return an array of an object's own and inherited non-enumerable symbol properties.
<section class="usage">
## Usage
<!-- eslint-disable id-length -->
```javascript
var nonEnumerablePropertySymbolsIn = require( '@stdlib/utils/nonenumerable-property-symbols-in' );
```
#### nonEnumerablePropertySymbolsIn( obj )
Returns an `array` of an object's own and inherited non-enumerable symbol properties.
```javascript
var hasSymbolSupport = require( '@stdlib/assert/has-symbol-support' );
var Symbol = require( '@stdlib/symbol/ctor' );
var defineProperty = require( '@stdlib/utils/define-property' );
var obj = {};
if ( hasSymbolSupport() ) {
defineProperty( obj, Symbol( 'a' ), {
'configurable': false,
'enumerable': false,
'writable': true,
'value': 'b'
});
}
var symbols = nonEnumerablePropertySymbolsIn( obj );
```
</section>
<!-- /.usage -->
<section class="notes">
## Notes
- Property order is not guaranteed, as `object` property enumeration is not specified according to the [ECMAScript specification][ecma-262-for-in]. In practice, however, most engines use insertion order to sort an `object`'s properties, thus allowing for deterministic extraction.
</section>
<!-- /.notes -->
<section class="examples">
## Examples
<!-- eslint-disable id-length -->
<!-- eslint no-undef: "error" -->
```javascript
var defineProperty = require( '@stdlib/utils/define-property' );
var hasSymbolSupport = require( '@stdlib/assert/has-symbol-support' );
var Symbol = require( '@stdlib/symbol/ctor' );
var nonEnumerablePropertySymbolsIn = require( '@stdlib/utils/nonenumerable-property-symbols-in' );
var hasSymbols = hasSymbolSupport();
var symbols;
var obj;
function Foo() {
if ( hasSymbols ) {
defineProperty( this, Symbol( 'baz' ), {
'configurable': false,
'enumerable': false,
'writable': true,
'value': 'qux'
});
}
return this;
}
if ( hasSymbols ) {
defineProperty( Foo.prototype, Symbol( 'bip' ), {
'configurable': false,
'enumerable': false,
'writable': false,
'value': 'bop'
});
}
obj = new Foo();
symbols = nonEnumerablePropertySymbolsIn( obj );
console.log( symbols );
```
</section>
<!-- /.examples -->
<section class="links">
[ecma-262-for-in]: http://www.ecma-international.org/ecma-262/5.1/#sec-12.6.4
</section>
<!-- /.links -->