Test if an object's own or inherited property has an accessor descriptor.
var isAccessorPropertyIn = require( '@stdlib/assert/is-accessor-property-in' );
Returns a boolean
indicating if an object's own or inherited property
has an accessor descriptor.
var defineProperty = require( '@stdlib/utils/define-property' );
var bool;
var obj;
function Foo() {
this.foo = 'bar';
return this;
}
defineProperty( Foo.prototype, 'beep', {
'configurable': false,
'enumerable': false,
'writable': false,
'value': 'boop'
});
defineProperty( Foo.prototype, 'accessor', {
'configurable': false,
'enumerable': false,
'get': function getter() {
return obj.foo;
},
'set': function setter( v ) {
obj.foo = v;
}
});
obj = new Foo();
bool = isAccessorPropertyIn( obj, 'foo' );
// returns false
bool = isAccessorPropertyIn( obj, 'beep' );
// returns false
bool = isAccessorPropertyIn( obj, 'accessor' );
// returns true
-
Value arguments other than
null
orundefined
are coerced toobjects
.var bool = isAccessorPropertyIn( 'beep', 'length' ); // returns false
-
Non-symbol property arguments are coerced to
strings
.var defineProperty = require( '@stdlib/utils/define-property' ); var obj = {}; function getter() { return true; } defineProperty( obj, 'null', { 'configurable': true, 'enumerable': true, 'get': getter }); var bool = isAccessorPropertyIn( obj, null ); // returns true
var isAccessorPropertyIn = require( '@stdlib/assert/is-accessor-property-in' );
var bool = isAccessorPropertyIn( [ 'a' ], 'length' );
// returns false
bool = isAccessorPropertyIn( { 'a': 'b' }, 'a' );
// returns false
bool = isAccessorPropertyIn( [ 'a' ], 0 );
// returns false
bool = isAccessorPropertyIn( { 'null': false }, null );
// returns false
bool = isAccessorPropertyIn( { '[object Object]': false }, {} );
// returns false
bool = isAccessorPropertyIn( {}, 'toString' );
// returns false
bool = isAccessorPropertyIn( {}, 'hasOwnProperty' );
// returns false
bool = isAccessorPropertyIn( null, 'a' );
// returns false
bool = isAccessorPropertyIn( void 0, 'a' );
// returns false
@stdlib/assert/has-property
: test if an object has a specified property, either own or inherited.@stdlib/assert/is-accessor-property
: test if an object's own property has an accessor descriptor.@stdlib/assert/is-data-property-in
: test if an object's own or inherited property has a data descriptor.