Function tag

tag<Target extends object, TagData>(
tagDataConstructor: (target: Target) => TagData,
): { for(target: Target): TagData }
Creates a tag data accessor for a target object of a certain type. Tag data will be lazy created on access and reused for the same target object.
Type Parameters
- Target extends object
  Target type.
- TagData
  Tag data type.
Parameters
- tagDataConstructor: (target: Target) => TagData
  Function that will be called the first time the tag for a given object is requested.
Returns { for(target: Target): TagData }
The tag data associated with the target object.