@vnmfify/core/form/form.validate.js

```shell npm i @vnmfify/core -S ```

import _isEmpty from "lodash/isEmpty";
import _filter from "lodash/filter";
import _flatMap from "lodash/flatMap";
export function validateAll(fields) {
  return new Promise((resolve, reject) => {
    Promise.all(fields.map(field => field.validate().then(() => [], reason => [reason]))).then(errors => _flatMap(errors, error => error)).then(errors => _filter(errors, error => !_isEmpty(error.errors))).then(errors => {
      if (!_isEmpty(errors)) {
        reject(errors);
      } else {
        resolve();
      }
    });
  });
}
export function validateSequence(fields) {
  return new Promise((resolve, reject) => {
    fields.reduce((promise, field) => promise.then(errors => {
      if (_isEmpty(errors)) {
        return field.validate().then(() => [], error => [error]);
      }

      return errors;
    }), Promise.resolve([])).then(errors => {
      if (_isEmpty(errors)) {
        resolve();
      } else {
        reject(errors);
      }
    });
  });
}
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