Deep Cloning Objects in JavaScript, the Modern Way

1. lodash

   1 212 60,346 2.5 JavaScript

   A modern JavaScript utility library delivering modularity, performance, & extras.

   

   A lot of Lodash functions are implemented as combinations of other Lodash functions, so importing a single function actually imports half of Lodash under the hood:

   https://github.com/lodash/lodash/blob/main/src/.internal/bas...

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3. mutative

   2 17 1,712 8.2 TypeScript

   Efficient immutable updates, 2-6x faster than naive handcrafted reducer, and more than 10x faster than Immer.

   

   for those recommending Immer, check out Mutative or Limu instead (much faster)

   https://github.com/unadlib/mutative

   https://github.com/tnfe/limu

4. limu

   3 8 243 6.6 JavaScript

   High performance immutable lib alternative to immer with the same api, based on shallow copy on read and mark modified on write mechanism.

   

   for those recommending Immer, check out Mutative or Limu instead (much faster)

   https://github.com/unadlib/mutative

   https://github.com/tnfe/limu

5. proposal-record-tuple

   4 80 2,541 2.7 HTML

   ECMAScript proposal for the Record and Tuple value types. | Stage 2: it will change!

   

   If you’re reaching for structuredClone, what you really want is native immutable Record and Tuple syntax, and the companion “deep path properties” syntax which allows for efficient and ergonomic immutable updates:

   - https://github.com/tc39/proposal-record-tuple

6. proposal-deep-path-properties-for-re

   5 2 - -

7. LJSON

   6 2 503 0.0 JavaScript

   JSON extended with pure functions.

   

8. superjson

   7 9 4,626 3.9 TypeScript

   Safely serialize JavaScript expressions to a superset of JSON, which includes Dates, BigInts, and more.

   

   I wasn't aware of this, I would like to give a shout out to superjson (https://github.com/blitz-js/superjson) which I had been using to solve this problem. I will look at this solution for next time.

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10. monocle-ts

    8 8 1,056 0.0 TypeScript

    Functional optics: a (partial) porting of Scala monocle

    

    Instead of the "deep path properties" syntax, you might want to take the opportunity to learn about functional lenses with monocle-ts

    https://gcanti.github.io/monocle-ts/

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