SimpleChanges - Angular

A hashtable of changes represented by SimpleChange objects stored at the declared property name they belong to on a Directive or Component. This is the type passed to the ngOnChanges hook. Pass the current class or this as the first generic argument for stronger type checking (e.g. SimpleChanges<YourComponent>).

API

type SimpleChanges<T = unknown> = T extends object
  ? {
      [Key in keyof T]?: SimpleChange<
        T[Key] extends {[ɵINPUT_SIGNAL_BRAND_READ_TYPE]: infer V} ? V : T[Key]
      >;
    }
  : {
      [propName: string]: SimpleChange; // Backwards-compatible signature.
    }