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Convierte libras a kilogramos y viserversa
converter_masa es una libreria que contiene objetos que sirver para convertir en unidades de masa (Libras y Kilogramos) transforma de una unidad a otra
npm install converter_masaimport {Conversor} from 'converter_masa';
const conversor = new Conversor();
conversor.librasToKilogramos(str);