Echo JS 0.11.0

There are already many datepickers, but I never found one without any depedencies at all and working as a polyfill for input type="date".

I agree that type checking at runtime is really important for JS applications. That's why I made this: http://objectmodel.js.org ; it works really well with Babel, and it has non-nullable types by default from the beginning

You talk about the risk of code injection but it seems you don't care at all. This test for detecting serialized functions is ridiculously weak, making a XSS with this example as easy as:

let person ={
  name: 'function f(){},alert("XSS")'
};

Of course you can try to sanitize any user-inserted data, but unless you like playing russian roulette, I strongly discourage you to go that way.

Are you referring to the new API such as #array.findIndex ? I think the bublé approach makes sense. Polyfilling, when possible, is better than transpiling because it adapts to the user browser capacities. When using a polyfill service such as polyfill.io, only the necessary polyfills are loaded ; which means smaller bundle size and increased perf with the built-in features. This is actually very smart in my opinion.

Looks very promising. Did anyone try it combined with a polyfill service such as polyfills.io ? Or is es6-shim mandatory ?

not if you consider false as a different value than undefined/null

People are confused because the name is confusing and the bluebird API is bloated. We could just write Promise.resolve().then instead of Promise.try

I think you wanted to share this: http://gruntjs.com/blog/2016-04-04-grunt-1.0.0-released

okay it's a shame. I guess I just copy paste what I need then.

ok, maybe a @requires comment above each plugin would help