Speeding up the JavaScript ecosystem – one library at a time

Re:Speeding up the JavaScript ecosystem – one library at a time by brundolf on Wednesday November 30, 2022 @01:34PM (#33805356)

I'm very surprised the property ordering would matter. Seems like the JS engine itself could easily fix that, no? Silently re-order the properties to fit its own optimization

Do you have a source for the above info? (both because I'm a little skeptical of some parts of it, but also because I'd love to learn more about this topic and I've had trouble finding concrete info in the past)

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Re:Speeding up the JavaScript ecosystem – one library at a time by hajile on Wednesday November 30, 2022 @06:00PM (#33809249)

JS specifies that the order keys are added makes a difference. For this reason, entering them in two different ways is a fundamentally different, non-interchangeable object type.

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Re:Speeding up the JavaScript ecosystem – one library at a time by brundolf on Wednesday November 30, 2022 @11:53PM (#33812493)

You could preserve that information and still have the same native struct, since it only becomes relevant when iterating the keys

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