Echo JS 0.11.0

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This looks a lot like `Object.observe`, which was rejected from ECMAScript at stage 2 in favour of observables, IIRC. The example use case (observing `offsetTop`) is usually solved with an [`IntersectionObserver`] [0] these days, isn't it?

Don't get me wrong: I like what this library is doing, I'm just trying to figure out when it should be used instead of its alternatives.

[0]: https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserver

Duplicate and redirect to a possible blacklisted domain.

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This submission violates the following general rules for posting on Echo JS:

• No link to summaries, only link to original content
• No link to newsletters, see previous rule

You can see the full list of rules at http://www.echojs.com/about

Am I the only one who wouldn't shed a tear when this domain got blacklisted on Echo JS?

Mods are never asleep.

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Duplicate of http://www.echojs.com/news/25516