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1 /**
2 * Copyright (c) Meta Platforms, Inc. and affiliates.
3 *
4 * This source code is licensed under the MIT license found in the
5 * LICENSE file in the root directory of this source tree.
6 *
7 * @flow
8 */
9
10 import {Children} from 'react';
11
12 let didWarnSelectedSetOnOption = false;
13 let didWarnInvalidChild = false;
14 let didWarnInvalidInnerHTML = false;
15
16 /**
17 * Implements an <option> host component that warns when `selected` is set.
18 */
19
20 export function validateOptionProps(element: Element, props: Object) {
21 if (__DEV__) {
22 // If a value is not provided, then the children must be simple.
23 if (props.value == null) {
24 if (typeof props.children === 'object' && props.children !== null) {
25 Children.forEach(props.children, function (child) {
26 if (child == null) {
27 return;
28 }
29 if (
30 typeof child === 'string' ||
31 typeof child === 'number' ||
32 typeof child === 'bigint'
33 ) {
34 return;
35 }
36 if (!didWarnInvalidChild) {
37 didWarnInvalidChild = true;
38 console.error(
39 'Cannot infer the option value of complex children. ' +
40 'Pass a `value` prop or use a plain string as children to <option>.',
41 );
42 }
43 });
44 } else if (props.dangerouslySetInnerHTML != null) {
45 if (!didWarnInvalidInnerHTML) {
46 didWarnInvalidInnerHTML = true;
47 console.error(
48 'Pass a `value` prop if you set dangerouslyInnerHTML so React knows ' +
49 'which value should be selected.',
50 );
51 }
52 }
53 }
54
55 // TODO: Remove support for `selected` in <option>.
56 if (props.selected != null && !didWarnSelectedSetOnOption) {
57 console.error(
58 'Use the `defaultValue` or `value` props on <select> instead of ' +
59 'setting `selected` on <option>.',
60 );
61 didWarnSelectedSetOnOption = true;
62 }
63 }
64 }