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A comment on Concurrent JavaScript: It can work. Parent comment

Re:Concurrent JavaScript: It can work by bzbarsky on Wednesday August 30, 2017 @03:20PM (#15135082)
That doesn't really make things immutable. Even ignoring the deep vs shallow issue, consider what effect Object.freeze has on a JS Map (hint: none, really; you can still add/remove things).
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Re:Concurrent JavaScript: It can work by phailhaus on Wednesday August 30, 2017 @03:44PM (#15135305)
Right, that's where libraries like ImmutableJS come in.
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