An introduction to functional thinking with examples in JavaScript.
https://medium.com/@chetcorcos/functional-programming-for-javascript-people-1915d8775504#.p0hyzlyjq
A soft, informal introduction to the Fantasy Land spec.
https://james-forbes.com/?/posts/the-perfect-api
"A sneaky intro for programming with to monadic programming"
http://james-forbes.com/?/posts/versatility-of-array-methods
A more formal introduction to the FL spec.
https://medium.com/@rajaraodv/functional-programming-in-js-with-practical-examples-part-1-87c2b0dbc276#.l2j736i3z
A break down of a common imperative problem and how it can be solved using monads.
http://jrsinclair.com/articles/2016/marvellously-mysterious-javascript-maybe-monad/
A great introduction to Functors, Applicative and Monads.
http://adit.io/posts/2013-04-17-functors,_applicatives,_and_monads_in_pictures.html
Some quick video introductions to common Monads:
https://vimeo.com/106008027
https://vimeo.com/109984691
I've found this to be a key resource in understanding common patterns for implementing functional interfaces in JS
https://www.gitbook.com/book/drboolean/mostly-adequate-guide/details
A fantastic expansion of the Mostly Adequate Guide.
https://egghead.io/courses/professor-frisby-introduces-composable-functional-javascript
A nice article with some good ideas and a strong start (though I'm not crazy about the end result).
http://jaysoo.ca/2016/01/13/functional-programming-little-ideas/
Futures vs Promises, focus on error handling.
https://github.com/rpominov/fun-task/blob/master/docs/exceptions.md
A detailed introduction to Futures as monads.
http://robotlolita.me/2014/03/20/a-monad-in-practicality-controlling-time.html
Focus on the last chapter, Functional Refactoring.
http://refactoringjs.com/files/refactoring-javascript.pdf
A nice intro to using Lenses for solving common problems.
https://joneshf.github.io/programming/2015/12/19/Lenses-and-Virtual-DOM-Support-Open-Closed.html
https://gist.github.com/MarkusPfundstein/dece230b540a3cf4053c0af0ee31f709
https://gist.github.com/MarkusPfundstein/246446e428ab10dbd2383cf3204a19d0
Disclaimer, this is a Haskell example. A great demonstration of making your nicely typed code extendable.
https://two-wrongs.com/dynamic-dispatch-in-haskell-how-to-make-code-extendable
A simple idea on how to start managing side effects.
https://two-wrongs.com/the-case-for-controlled-side-effects
Not JS-specific: simple demonstration of using monads for solving common problems.
https://philipnilsson.github.io/Badness10k/posts/2017-05-07-escaping-hell-with-monads.html
Not JS-specific: an expansion on using monads for solving common problems.
https://fsharpforfunandprofit.com/rop/
Scala Example. Explaining some of the problems with if/else.
https://www.youtube.com/watch?v=gVXt1RG_yN0
https://medium.com/@yelouafi/javascript-and-type-thinking-735edddc388d#.xmc19y2gg https://github.com/stoeffel/awesome-fp-js/blob/master/README.md#videos https://github.com/jsverify/jsverify
A high-level talk about how to structure your application using boundaries
https://www.destroyallsoftware.com/talks/boundaries