Defines options for a property accessor.
Indicates how and whether the property becomes an observed attribute.
If the value is
false, the property is not added to
If true or absent, the lowercased property name is observed (e.g.
foobar). If a string, the string value is observed (e.g
Indicates how to convert the attribute to/from a property. If this value
is a function, it is used to convert the attribute value a the property
value. If it's an object, it can have keys for
toAttribute. If no
toAttribute function is provided and
reflect is set to
true, the property value is set directly to the
attribute. A default
converter is used if none is provided; it supports
when a property changes and the converter is used to update the attribute,
the property is never updated again as a result of the attribute changing,
and vice versa.
Indicates whether an accessor will be created for this property. By
default, an accessor will be generated for this property that requests an
update when set. If this flag is
true, no accessor will be created, and
it will be the user's responsibility to call
this.requestUpdate(propertyName, oldValue) to request an update when
the property changes.
Indicates if the property should reflect to an attribute.
true, when the property is set, the attribute is set using the
attribute name determined according to the rules for the
property option and the value of the property converted using the rules
converter property option.
Indicates the type of the property. This is used only as a hint for the
converter to determine how to convert the attribute
to/from a property.
A function that indicates if a property should be considered changed when
it is set. The function should take the
true if an update should be requested.
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