@yobta/validator/lib/shape/different.js

Tree-shakable es6 validator

import { rule } from '../rule/rule.js';
export const differentMessage = (field, path) => `"${field}" should be different from "${path}"`;
export const different = (path, message = differentMessage) => rule((input, { data, field }) => {
    if (input === data[path]) {
        throw new Error(message(field, path));
    }
    return input;
});