paperi-filtro.pipe.ts

import {PipeTransform, Pipe} from "@angular/core"

@Pipe ({
    name: 'filtroPaperi'
})

export class FiltroPaperiPipe implements PipeTransform{
    transform(value :any[], filter:string) : any[] {
        let filtro: string = filter ? filter.toLocaleLowerCase() : null;
        return filtro ? value.filter((papero) =>
            papero.nome.toLocaleLowerCase().indexOf(filtro) != -1) : value;
    }
}