clojure-thread-js-async

Clojure threading macro. Supports first, last, and as macro. No
support for binding.

Usage

``javascript
const thread = require('clojure-thread-async')

// first
// returns 9
await thread.first(
1,
x => x * 10,
[(x, y) => x - y, 1]
)

// last
// returns -9
await thread.last(
1,
x => x * 10,
[(x, y) => x - y, 1]
)

// as
// returns -8
// second argument must be a function that
// takes a placeholder as input (which is just
// an empty object) and
// returns an array of functions or arrays
await thread.as(
1,
placeholder => [
x => x * 10,
[(x, y) => x - y, placeholder, 1],
[(x, y) => x - y, 1, placeholder]
]
)

// React Redux reducer
const reducer = (state = 0, action) => {
switch(action.type) {
case "INC":
return state + 1
default:
return state
}
}

const state = thread.first(
reducer(undefined, {}),
[reducer, {type: "INC"}],
)

console.log(state == 1)
``