curry.js

export const fmap = f => g => x => f(g(x));

export const curryOnce = f => x => (...args) => f(x, ...args);

export const curry = n => f => (n == 1 ? f : fmap(curry(n - 1))(curryOnce(f)));

export const method = m => m.call.bind(m);

export const methodWithArgs = n => m => curry(n)(method(m));

export const flip = f => x => y => f(y)(x);

export const split = methodWithArgs(2)("".split);

export const map = flip(methodWithArgs(2)([].map));