in src/app/copy-and-remove.js [1:11]
export default function copyAndRemove(array, elementToRemove, eq = (a, b) => a === b) {
const index = array.findIndex(it => eq(it, elementToRemove));
if (index >= 0) {
return [
...(index > 0 ? array.slice(0, index) : []),
...(index < array.length - 1 ? array.slice(index + 1) : [])
];
} else {
return array;
}
}