isNonEnumerableProperty

Test if an object's own property is non-enumerable.

Usage

var isNonEnumerableProperty = require( '@stdlib/assert/is-nonenumerable-property' );

isNonEnumerableProperty( value, property )

Returns a boolean indicating if a value has a non-enumerable property.

var defineProperty = require( '@stdlib/utils/define-property' );

var obj = {
    'foo': 'bar'
};

defineProperty( obj, 'beep', {
    'configurable': false,
    'enumerable': false,
    'writable': true,
    'value': 'boop'
});

var bool = isNonEnumerableProperty( obj, 'beep' );
// returns true

bool = isNonEnumerableProperty( obj, 'foo' );
// returns false

Notes

Value arguments other than null or undefined are coerced to objects.

var bool = isNonEnumerableProperty( 'beep', 'length' );
// returns true

Examples

var isNonEnumerableProperty = require( '@stdlib/assert/is-nonenumerable-property' );

var bool = isNonEnumerableProperty( [ 'a' ], 'length' );
// returns true

bool = isNonEnumerableProperty( { 'a': 'b' }, 'a' );
// returns false

bool = isNonEnumerableProperty( [ 'a' ], 0 );
// returns false

bool = isNonEnumerableProperty( {}, 'toString' );
// returns false

bool = isNonEnumerableProperty( {}, 'hasOwnProperty' );
// returns false

bool = isNonEnumerableProperty( null, 'a' );
// returns false

bool = isNonEnumerableProperty( void 0, 'a' );
// returns false

bool = isNonEnumerableProperty( { 'null': false }, null );
// returns false

bool = isNonEnumerableProperty( { '[object Object]': false }, {} );
// returns false