/**

 * Copyright (c) Meta Platforms, Inc. and affiliates.

 *

 * This source code is licensed under the MIT license found in the

 * LICENSE file in the root directory of this source tree.

 *

 * @flow

 */

import {checkFormFieldValueStringCoercion} from 'shared/CheckStringCoercion';

export opaque type ToStringValue =

  | boolean

  | number

  | Object

  | string

  | null

  | void;

// Flow does not allow string concatenation of most non-string types. To work

// around this limitation, we use an opaque type that can only be obtained by

// passing the value through getToStringValue first.

export function toString(value: ToStringValue): string {

  // The coercion safety check is performed in getToStringValue().

  // eslint-disable-next-line react-internal/safe-string-coercion

  return '' + (value: any);

}

export function getToStringValue(value: mixed): ToStringValue {

  switch (typeof value) {

    case 'boolean':

    case 'number':

    case 'string':

    case 'undefined':

      return value;

    case 'object':

      if (__DEV__) {

        checkFormFieldValueStringCoercion(value);

      }

      return value;

    default:

      // function, symbol are assigned as empty strings

      return '';

  }

}