Doesn't immutablejs do the deep copying itself? Even better would be a language ... | Hacker News

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Cthulhu_ on Jan 26, 2018 | parent | context | favorite | on: Deep-copying in JavaScript

Doesn't immutablejs do the deep copying itself?

Even better would be a language (could be plain JS) that enforces immutability. How about a new keyword in Typescript?

littlestymaar on Jan 26, 2018 | [–]

There's Object.freeze[1] for that. Of course that's checked only at runtime, because js is a dynamic language …

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

jeremyjh on Jan 26, 2018 | [–]

Typescript has a readonly directive you can declare for interfaces, and it gives a type error on assignment.

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