TC39 proposal: Record and Tuples, the real immutable data structures in JavaScript.
3 min readApr 26, 2021
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One of the misleading use cases for beginners in JavaScript is to create constant arrays and objects. With the introductions of ES6, we got two new declarators: let
, for mutable variables, and const
, for constants. Many beginners believe that this will make their objects and array immutable, to discover later that they are not. The object or array…