src/operators.js

export const lt = (y) => (x) => x < y;
export const le = (y) => (x) => x <= y;

export const gt = (y) => (x) => x > y;
export const ge = (y) => (x) => x >= y;

export const eq = (y) => (x) => x === y;
export const ne = (y) => (x) => x !== y;