immutably remove an item from a list

removeArrItem.js

// source list
const theList = [{id: 'foo'}, {id: 'bar'},{id: 'bazzle'} ];

// the item to remove
const item = {id: 'foo'};

// get the item's index from soure list
const indx = theList.findIndex(v => v.id === item.id)

// function to remove
const removeItemAtIndex = (arr, index) => {
    return [...arr.slice(0, index), ...arr.slice(index + 1)]
}

// usage
const newList = removeItemAtIndex(selectedMembers, indx)