@douyinfe/semi-ui/lib/es/form/errorMessage.js

A modern, comprehensive, flexible design system and UI library. Connect DesignOps & DevOps. Quickly build beautiful React apps. Maintained by Douyin-fe team.

import React, { PureComponent } from 'react';
import classNames from 'classnames';
import PropTypes from 'prop-types';
import { cssClasses } from '@douyinfe/semi-foundation/lib/es/form/constants';
import { IconAlertTriangle, IconAlertCircle } from '@douyinfe/semi-icons';
const prefix = cssClasses.PREFIX;
export default class ErrorMessage extends PureComponent {
  generatorText(error) {
    const {
      helpTextId,
      errorMessageId
    } = this.props;
    const propsError = this.props.error;
    let id = errorMessageId;
    if (!propsError) {
      id = helpTextId;
    }
    if (typeof error === 'string') {
      return /*#__PURE__*/React.createElement("span", {
        id: id
      }, error);
    } else if (Array.isArray(error)) {
      const err = error.filter(e => e);
      return err.length ? /*#__PURE__*/React.createElement("span", {
        id: id
      }, err.join(', ')) : null;
    } else if (/*#__PURE__*/React.isValidElement(error)) {
      return error;
    }
    return null;
  }
  render() {
    const {
      error,
      className,
      style,
      validateStatus,
      helpText,
      showValidateIcon,
      isInInputGroup
    } = this.props;
    const cls = classNames({
      [prefix + '-field-error-message']: Boolean(error),
      [prefix + '-field-help-text']: Boolean(helpText)
    }, className);
    if (!error && !helpText) {
      return null;
    }
    // The async-validator `message: ''` convention means "validation failed, but suppress
    // the message text". Without this guard the field would silently fall back to rendering
    // `helpText`, which would falsely look like the success/help state. Skip rendering
    // entirely so that a hidden-text error stays hidden — consistent with the legacy
    // behavior where an unresolved promise meant nothing was rendered at all.
    if (error === '' && validateStatus === 'error') {
      return null;
    }
    const iconMap = {
      warning: /*#__PURE__*/React.createElement(IconAlertTriangle, null),
      error: /*#__PURE__*/React.createElement(IconAlertCircle, null)
    };
    const text = error ? this.generatorText(error) : this.generatorText(helpText);
    // Keep backward compatible behavior:
    // historically, when `error` is a truthy non-renderable type (e.g. number),
    // ErrorMessage still renders an empty wrapper with `.semi-form-field-error-message`.
    // Only skip rendering for array errors that have no displayable content (all falsy),
    // to avoid empty placeholders (e.g. InputGroup collecting [false, false]).
    if (Array.isArray(error) && !text && !helpText) {
      return null;
    }
    const iconCls = `${prefix}-field-validate-status-icon`;
    let icon = null;
    if (isInInputGroup) {
      icon = /*#__PURE__*/React.createElement(IconAlertCircle, {
        className: iconCls
      });
    } else {
      if (iconMap[validateStatus]) {
        icon = /*#__PURE__*/React.cloneElement(iconMap[validateStatus], {
          className: iconCls
        });
      }
    }
    return /*#__PURE__*/React.createElement("div", {
      className: cls,
      style: style
    }, showValidateIcon && text ? icon : null, text);
  }
}
ErrorMessage.propTypes = {
  error: PropTypes.oneOfType([PropTypes.bool, PropTypes.string, PropTypes.array, PropTypes.node]),
  className: PropTypes.string,
  style: PropTypes.object,
  validateStatus: PropTypes.string,
  showValidateIcon: PropTypes.bool,
  helpText: PropTypes.node,
  isInInputGroup: PropTypes.bool,
  // internal props
  errorMessageId: PropTypes.string,
  helpTextId: PropTypes.string
};