Ng-select: "this" keyword is undefined in searchFn

[ybmt]

Describe the bug
"this" keyword is undefined in searchFn

To Reproduce
Steps to reproduce the behavior (if example is not provided):

1. Use "this" keyword in searchFn

Expected behavior
"this" should not be undefined in searchFn

Screenshots

Desktop (please complete the following information):

• OS: MAC
• All Browsers

[varnastadeus]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions

[dsnoeck]

For anyone else landing here, here is the correct syntax:

searchFn = (term: string, item: any) => {
  console.log(this);
  return true;
}

[rubenheymans]

for anyone else landing here, a decent example:

 public searchFn(term: string, pigeon: Pigeon): boolean {
    const ringNumber = pigeon.ringNumber.toLocaleLowerCase();
    const name = pigeon.name.toLocaleLowerCase();
    term = term.toLocaleLowerCase();

    return ringNumber.indexOf(term) !== -1 || name.indexOf(term) !== -1;
  }