Return a property descriptor for an object's own or inherited property.
var propertyDescriptorIn = require( '@stdlib/utils/property-descriptor-in' );
Returns a property descriptor for an object's own or inherited property.
var obj = {
'a': 1,
'b': 2
};
var desc = propertyDescriptorIn( obj, 'a' );
// returns {'configurable':true,'enumerable':true,'writable':true,'value':1}
This function differs from the built-in Object.getOwnPropertyDescriptor()
as follows:
null
or undefined
, the function returns null
, rather than throwing an error.null
, rather than undefined
.var defineProperty = require( '@stdlib/utils/define-property' );
var propertyDescriptorIn = require( '@stdlib/utils/property-descriptor-in' );
function Foo() {
this.beep = 'boop';
this.a = {
'b': 'c'
};
defineProperty( this, 'baz', {
'value': 'qux',
'configurable': true,
'writable': true,
'enumerable': false
});
return this;
}
Foo.prototype.foo = [ 'bar' ];
var obj = new Foo();
var desc = propertyDescriptorIn( obj, 'foo' );
console.log( desc );
// => {'configurable':true,'enumerable':true,'writable':true,'value':['bar']}