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Backport structuredClone to Node v16 #40756
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If the Semver-Major bit is to add a new global we could potentially backport as a requireable / importable module
edit: confirmed major was due to global
Reacted by Luigi Pinca, fregante, Steven, Antoine du Hamel, Szymon Marczak, Simon Plenderleith, rozingmichael and Pelle WessmanIs there any update on when or if the feature would be backported?
Not waiting 2 years for another LTS release to get this would be amazing as it's such a useful addition. Currently adding lodash for the
cloneDeep()functionality is a very bloated work-around.Reacted by rozingmichael, Justin and Coen DunninkYeah, it would be nice to have, but we are still discovering problems with it almost weekly and still need to ensure that it is spec-compliant or at least matches expected behavior and having nothing yet specified in the ECMAScript specification for it means that we have to piece together behavior specified elsewhere, so really it should only be used in experimental (non-production) settings probably only for academic purposes at the moment. The current implementation will very likely change and I wouldn't consider the current behavior safe to use in some cases, so I'm surprised it even shipped so soon, but that's just my opinion (and not a very developed one at that, so I digress).
Reacted by rozingmichaelReacted by freganteNot waiting 2 years for another LTS release to get this would be amazing as it's such a useful addition.
We release new LTS lines every year. The next new LTS release (Node.js 18) is planned to become LTS in October this year.
Reacted by Fernando ToledoReacted by Simon PlenderleithWhat’s the best way to achieve identical functionality on Node 16?
Would you accept a PR for the suggestion from @MylesBorins of making it a requireable function?
Or would it be possible to extract this implementation and make it a third party polyfill on npm?
Reacted by Micael Levi L. Cavalcante and August LuhrsWhat’s the best way to achieve identical functionality on Node 16? […] Or would it be possible to extract this implementation and make it a third party polyfill on npm?
I think making it an npm package is the easiest way to get it for Node.js 16.x. The original suggestion from Anna should Just Works™:
I think a drop-in
structuredClonefor Node.js could be:{ const { MessageChannel, receiveMessageOnPort } = require('worker_threads'); const channel = new MessageChannel(); channel.unref(); globalThis.structuredClone = function structuredClone(value, transfer) { channel.port1.postMessage(value, transfer); return receiveMessageOnPort(channel.port2).message; }: }
Source: #39713 (comment)
There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.
For more information on how the project manages feature requests, please consult the feature request management document.
Reacted by Steven and Nato BoramThere has been no activity on this feature request and it is being closed. If you feel closing this issue is not the right thing to do, please leave a comment.
For more information on how the project manages feature requests, please consult the feature request management document.
Reacted by Nato Boram
#39713 added
structuredCloneand it landed in v17Is it possible to back port it to v16? It'd be great to see it in an LTS sooner rather than later