onFilterChange EventEmitter sending type string instead of ListItem

[ishyevandro]

Angular version: 13.3.11

ng-multiselect-dropdown version: 0.3.9

Description of issue: Problem understanding how "onFilterChange" signature should work.

In this case, It looks like the right emit should be of type ListItem.

Steps to reproduce:

  <ng-multiselect-dropdown
    [placeholder]="placeholder"
    [settings]="dropdownSettings"
    [data]="options"
    [(ngModel)]="selectedItems"
    (onFilterChange)="onFilterChange($event)"
    (ngModelChange)="onSelectionChange()"
    [disabled]="disabled"
  >
  </ng-multiselect-dropdown>

Not compiling because of "error TS2345: Argument of type 'ListItem' is not assignable to parameter of type 'string'."

  onFilterChange(search: string) {
    console.log(typeof search);
    this.searchChange.emit(`${search}`);
  }

Working but not respecting type and with an eslint error. @typescript-eslint/no-base-to-string

  onFilterChange(search: ListItem) {
    console.log(typeof search); //string
    this.searchChange.emit(`${search}`);
  }

Expected result: onFilterChange receive an object of ListItem

Actual result: onFilterChange receiving a string

Demo: Please share sample code link using StackBlitz or codesandbox