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by narsil
3178 days ago
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Great product announcement post! I especially liked the Q&A section's reasons for not choosing alternatives. Is the lack of maturity also the reason for not choosing something like vm2 for NodeJS https://github.com/patriksimek/vm2 |
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Looking briefly, it looks like it's based on creating separate contexts, but not separate isolates. Contexts within the same isolate can be reasonably secure (it's how Chrome sandboxes iframes from their parent frames, after all), but they still share a single heap and must run on the same thread. Isolates can run on separate threads. We prefer to give each script its own isolate, so that one script using a lot of CPU does not block other scripts. We also want to be able to kill a script that does, say, "while(true) {}".
So yeah, it looks like a neat library but it probably wouldn't suit our needs.