@rjsf/utils/lib/enumOptionSelectedValue.js

Utility functions for @rjsf/core

import enumOptionsIndexForValue from './enumOptionsIndexForValue.js';
/** Computes the value to pass to a select element's `value` attribute.
 *
 * When `format` is `'realValue'`, converts form data values to strings.
 * When `format` is `'indexed'` (the default), resolves to index-based values via
 * `enumOptionsIndexForValue`. Returns `emptyValue` when the current value is empty.
 *
 * @param value - The current form data value
 * @param enumOptions - The available enum options
 * @param multiple - Whether the select allows multiple selections
 * @param [format='indexed'] - How option values are encoded on the DOM
 * @param emptyValue - The value to return when the selection is empty
 * @returns The value to use for the select element's `value` attribute
 */
export default function enumOptionSelectedValue(value, enumOptions, multiple, format = 'indexed', emptyValue) {
    const isEmpty = typeof value === 'undefined' ||
        (multiple && Array.isArray(value) && value.length < 1) ||
        (!multiple && value === emptyValue);
    if (isEmpty) {
        return emptyValue;
    }
    if (format === 'realValue') {
        return multiple ? value.map(String) : String(value);
    }
    const indexes = enumOptionsIndexForValue(value, enumOptions, multiple);
    return typeof indexes === 'undefined' ? emptyValue : indexes;
}
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