pointless-js/dist/es/boolean.js

Functional point-free utilities for js

export function composeBools(operator) {
    return function (...fns) {
        return fns.reduce((lf, rf) => (x, i, arr) => operator(lf(x, i, arr), rf(x, i + 1, arr)));
    };
}
export const and = composeBools((l, r) => l && r);
export const or = composeBools((l, r) => l || r);
export const either = composeBools((l, r) => (l && !r) || (r && !l));
export const not = (f) => ((...args) => !f(...args));
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