Object

The core/object component is an aggregated instance that exposes functionality that operates in relation to the js Object type.

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composeLowerCaseKeyedObject

The method composeLowerCaseKeyedObject will compose a cloned object where all the keys of the input object are returned with lower cased keys.

const
obj       = { FooBar:'FooBar' },
object    = core.locate('core/object'),
composed  = object.composeLowerCaseKeyedObject(obj)

In the above example, value of the composed variable is as described below.

{ foobar:'FooBar' }

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composeObjectWithoutKeys

The method composeObjectWithoutKeys is authored by Lleonard Subirana. The method will creates a copy of an object, excluding keys defined by the following arguments.

const
obj       = { foo:123, bar:456, baz:789, qux:0 },
object    = core.locate('core/object'),
composed  = object.composeObjectWithoutKeys(obj, 'bar', 'baz')

In the above example, value of the composed variable is as described below.

{ foo:123, qux:0 }

References are by design kept intact in the composed object, as the following example shows.

const
obj       = { foo:{ bar:'baz' }, baz:456 },
object    = core.locate('core/object'),
composed  = object.composeObjectWithoutKeys(obj, 'baz')

obj.foo.bar = 'qux'
obj.foo.bar === composed.foo.bar
// > true