Бьюсь уже 2ой день
const array = [-3, -14, -5, 7, 8, 42, 8, 3];
const chunkSize = 2;
const chunks = array.reduce((acc,item,i) => {
const chunk = Math.floor(i / chunkSize);
acc[chunk] = [].concat((acc[chunk]||[]), item);
return acc;
}, []);
console.log(chunks);
this.$store.commit('app/breadcrumbsPush', this.breadcrumbs);