@modular-forms/react/dist/source/validation/maxTotalSize.js

The modular and type-safe form library for React

/**
 * Creates a validation functions that validates total file size of a file list.
 *
 * @param requirement The maximum size.
 * @param error The error message.
 *
 * @returns A validation function.
 */
export function maxTotalSize(requirement, error) {
    return (value) => value?.length &&
        [...value].reduce((size, file) => size + file.size, 0) > requirement
        ? error
        : '';
}