react-schema/lib/index.js

Use react like PropTypes for generic object validation.

'use strict';

/**
 * Performs validation on the a set of properties.
 *
 * @param {Object|Function} propTypes
 *        An object containing the property-type definitions (schema) or a
 *        single PropType.
 *
 * @param {Object} props
 *        An object of properties to validate or a single value of a single
 *        <propTypes> definiiton was passed.
 *
 * @param {String} [displayName]
 *        The name of the component or module being validated.
 *
 *        Used in formatting the error message(s).
 *
 * @return {Object} result
 *         The validation results. Looks something like this:
 *
 *         {
 *           isValid: Boolean,
 *           errors: Object.<String, String>?
 *         }
 */
exports.validate = function (propTypes, props, displayName) {
  var result = { isValid: true };

  if (typeof propTypes === 'function') {
    propTypes = { value: propTypes };
    props = { value: props };
  }

  Object.keys(propTypes).forEach(function (key) {
    var validator = propTypes[key];
    var error = validator(props, key, displayName);

    if (error !== null) {
      result.isValid = false;
      result.errors = result.errors || {};
      result.errors[key] = error;
    }
  });

  return result;
};

exports.PropTypes = require('./PropTypes');
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