@shopgate/engage/core/validation/validation.js

Shopgate's ENGAGE library.

import "core-js/modules/es.array.reduce.js";
import moment from 'moment';
import validateJs from 'validate.js';
validateJs.options = {
  format: 'detailed',
  fullMessages: false
};
validateJs.extend(validateJs.validators.datetime, {
  // The value is guaranteed not to be null or undefined but otherwise it
  // could be anything.
  parse(value) {
    return +moment.utc(value);
  },
  // Input is a unix timestamp
  format(value, options) {
    const format = options.dateOnly ? 'YYYY-MM-DD' : 'YYYY-MM-DD hh:mm:ss';
    return moment.utc(value).format(format);
  }
});

/**
 * @param {Object} values The values to validate.
 * @param {Object} constraints The constraints.
 * @returns {{ valid: boolean, validationErrors: Object }}
 */
export function validate(values, constraints) {
  const sanitizedValues = {
    ...values
  };

  /**
   * When the presence constrain is not set, empty strings are considered as not empty and those
   * values will be passed through other validators like datetime, where they can cause false
   * negatives. So we'll just convert them to null for the validator.
   */
  Object.keys(sanitizedValues).forEach(key => {
    const value = sanitizedValues[key];
    if (value === '') {
      sanitizedValues[key] = null;
    }
  });
  let errors = validateJs(sanitizedValues, constraints);
  if (errors && Object.keys(errors).length > 0) {
    errors = errors.reduce((obj, item) => {
      if (obj[item.attribute]) {
        return obj;
      }
      return {
        ...obj,
        [item.attribute]: item?.options?.message || item?.error
      };
    }, {});
  }
  return {
    valid: !errors,
    validationErrors: errors
  };
}