Insert an element after the given index.
npm install @valentinog/array-insert-after
With a numeric index:
import insertAfter from "@valentinog/array-insert-after";
const elements = ["b", "c", "d"];
const newElement = "a";
insertAfter<string>(elements, newElement, 1);
With a predicate function:
import insertAfter from "@valentinog/array-insert-after";
const elements = [
{
id: 1,
name: "a",
},
{ id: 2, name: "b" },
{ id: 3, name: "c" },
];
const newElement = {
id: 4,
name: "x",
};
const predicate = (element: typeof newElement) => element.id === 2;
insertAfter<{ id: number; name: string }>(elements, newElement, predicate);
const insertAfter = require("@valentinog/array-insert-after");
// do your stuff
npm test