Records and tuples

Utilities to create deep immutable objects and arrays.

We make it possible to use immutable data structures similar to this tc39 proposal: https://github.com/tc39/proposal-record-tuple

We export 2 factory functions createRecord and createTuple which create a record and tuple respectively.

This package does not concern itself with equality. Comparing with the === operator will still use the basic equality by reference for objects and arrays.

Examples

Record

1import { createRecord } from "records-and-tuples";
2
3const me = createRecord({
4  name: "Michael",
5  friends: ["Jim", "Pam"],
6});
7
8me.name = "Steve"; // Will throw a runtime error
9
10me.friends.push("Dwight"); // Will throw a runtime error

Tuple

1import { createTuple } from "records-and-tuples";
2
3const hobbies = createTuple(["Art & Craft", "Business", "Dance"]);
4
5hobbies = []; // Will throw a runtime error
6
7hobbies.push("soccer"); // Will throw a runtime error