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Ask HN: What single/simple omission from the JS spec would yield big perf gains?

https://news.ycombinator.com/item?id=18429010

by kizer • 8 years ago

4 3 8 years ago

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news.ycombinator.com

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3

kizer• 8 years ago

For example, if all objects' properties were immutable after instantiation, could this fact be relied upon to engineer higher performance in JS engines?

Just curious.

backslash_16• 8 years ago

If I understand your question, you're asking what is one thing currently missing from JS that if added would yield a large perf gain?

I think the biggest one would be from types. The JS runtime engineers have improved perf a ton already and I imagine all of the low and medium hanging fruit is already done.

twtw• 8 years ago

Based on the OP's comment with an example, it sounds like the question is more like "what feature/capability/etc currently in the spec could be removed to improve performance?"

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