pointed functor is a functor with an of method

class IO {
// The value we take for IO is always a function!
static of (x) {
return new IO(() => x)
} constructor (fn) {
this.$value = fn;
} map (fn) {
return new IO(compose(fn, this.$value))
}
}

What's important here is the ability to drop any value in our type and start mapping away.

IO.of('tetris').map(concat(' master'));
// IO('tetris master') Maybe.of().map(add());
// Maybe(1337) Task.of([{ id: }, { id: }]).map(map(prop('id')));
// Task([2,3]) Either.of('The past, present and future walk into a bar...').map(concat('it was tense.'));
// Right('The past, present and future walk into a bar...it was tense.')

The benifits using 'of' instead of 'new' is that we can map over the 'Task.of().map(fn)' right away.

Consider this:

const m = new Maybe():
m.map(add()) //VS Maybe.of().map(add());

To avoid the new keyword, there are several standard JavaScript tricks or libraries so let's use them and use of like a responsible adult from here on out. I recommend using functor instances from folktaleramda or fantasy-land as they provide the correct of method as well as nice constructors that don't rely on new.

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