How to update a javascript object keys value using the index of an object

I have an array of object like

const test = [{id: 1, text: "Test"}, { id: 2 , text: "Test 2" } ]
const index =  test.findIndex((listItem) => listItem === test[0])

Here I am trying to update the value of text key using the index.

I have a solution like this:

 const editItemText = (value) => {
    const newList = replaceItemAtIndex(todoList, index, {
      ...item,
      text: value,
    });

    setTodoList(newList);
  };
  
const replaceItemAtIndex =  [...arr.slice(0, index), newValue, ...arr.slice(index + 1)];

is there any other option to do so ? Also How does the given solution works ?

Thanks.