@snups/rjsf-utils/lib/enumOptionsValueForIndex.js

Utility functions for @snups/rjsf-core

/** Returns the value(s) from `allEnumOptions` at the index(es) provided by `valueIndex`. If `valueIndex` is not an
 * array AND the index is not valid for `allEnumOptions`, `emptyValue` is returned. If `valueIndex` is an array, AND it
 * contains an invalid index, the returned array will have the resulting undefined values filtered out, leaving only
 * valid values or in the worst case, an empty array.
 *
 * @param valueIndex - The index(es) of the value(s) that should be returned
 * @param [allEnumOptions=[]] - The list of all the known enumOptions
 * @param [emptyValue] - The value to return when the non-array `valueIndex` does not refer to a real option
 * @returns - The single or list of values specified by the single or list of indexes if they are valid. Otherwise,
 *        `emptyValue` or an empty list.
 */
export default function enumOptionsValueForIndex(valueIndex, allEnumOptions = [], emptyValue) {
    if (Array.isArray(valueIndex)) {
        return (valueIndex
            .map((index) => enumOptionsValueForIndex(index, allEnumOptions))
            // Since the recursive call returns `emptyValue` when we get a bad option, only filter those out
            .filter((val) => val !== emptyValue));
    }
    // So Number(null) and Number('') both return 0, so use emptyValue for those two values
    const index = valueIndex === '' || valueIndex === null ? -1 : Number(valueIndex);
    const option = allEnumOptions[index];
    return option ? option.value : emptyValue;
}
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