import type { ReactNode } from 'react';

/**
 * A field value is "empty" (render the uniform em-dash) only when it is null, undefined, or an
 * empty/whitespace-only string. `0` and `false` are deliberately NOT empty - a legitimate numeric
 * 0 or boolean false must render, not blank (fixes FieldRow's `{value || '-'}`, which blanks a 0).
 */
export function isEmptyFieldValue(value: ReactNode): boolean {
    if (value === null || value === undefined) {
        return true;
    }
    if (typeof value === 'string') {
        return value.trim() === '';
    }
    return false;
}