> lack of module system
ES6 fixes this with, well, a module system.
> weak-typing,
Yup, this is a problem.
> verbose function syntax,
ES6 fixes this with arrow functions.
> late binding
Does this just mean dynamic typing? Well, yes, JavaScript is dynamically typed, but I wouldn't call that a language flaw. Static vs. dynamic typing is a tradeoff.
> which has led to the creation of various static analysis tools to alleviate this language flaw
The footnote talks about JSLint and friends, but none of those impose a type system, which means that they do nothing about dynamic typing.
> but with limited success (there is even a static type checker)
Well, yeah. It's very hard (read: "research problem") to impose a good static typechecker on a dynamically typed system, though.
> finicky equality/automatic conversion
Yeah, this is bad. I really wish tools like restrict mode [1] had caught on: together with ES6 they eliminate a lot of what people dislike about JavaScript.
> this behaviour,
Fixed in ES6 if you use arrow functions (finally!)
> and lack of static types.
Again, I wouldn't say it "sucks" for this reason, just that it's dynamically typed. That's a tradeoff.
[1]: http://restrictmode.org/
ES6 fixes this with, well, a module system.
> weak-typing,
Yup, this is a problem.
> verbose function syntax,
ES6 fixes this with arrow functions.
> late binding
Does this just mean dynamic typing? Well, yes, JavaScript is dynamically typed, but I wouldn't call that a language flaw. Static vs. dynamic typing is a tradeoff.
> which has led to the creation of various static analysis tools to alleviate this language flaw
The footnote talks about JSLint and friends, but none of those impose a type system, which means that they do nothing about dynamic typing.
> but with limited success (there is even a static type checker)
Well, yeah. It's very hard (read: "research problem") to impose a good static typechecker on a dynamically typed system, though.
> finicky equality/automatic conversion
Yeah, this is bad. I really wish tools like restrict mode [1] had caught on: together with ES6 they eliminate a lot of what people dislike about JavaScript.
> this behaviour,
Fixed in ES6 if you use arrow functions (finally!)
> and lack of static types.
Again, I wouldn't say it "sucks" for this reason, just that it's dynamically typed. That's a tradeoff.
[1]: http://restrictmode.org/