Function deepExtend

deepExtend(a: any, b: any, protoExtend?: boolean, allowDeletion?: boolean): any
Deep extend an object a with the properties of object b.
Parameters
- a: any
  Target object.
- b: any
  Source object.
- protoExtend: boolean = false
  If true, the prototype values will also be extended. (That is the options objects that inherit from others will also get the inherited options).
- allowDeletion: boolean = false
  If true, the values of fields that are null will be deleted.
Returns any
Argument a.
- Defined in src/util.ts:348