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

Tree-shakable es6 validator

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