node-input-validator/lib/rules/arrayUniqueObjects.js

validation library for nodejs, inspired by laravel.

module.exports = function arrayUniqueObjects({ value, args }) {
  if (!Array.isArray(value)) {
    return false;
  }

  const result = new Set(value.map((o) => {
    let output = '';

    // eslint-disable-next-line no-restricted-syntax
    for (const attr of args) {
      output += o[attr];
    }

    return output;
  }));

  return result.size === value.length;
};