import 'package:flutter/material.dart';

/// Modern null-safe widget list compaction.
/// Filters out null values from a list of nullable widgets.
/// Example: compactWidgets([widget1, null, widget2]) → [widget1, widget2]
List<Widget> compactWidgets(List<Widget?> children) =>
    children.whereType<Widget>().toList();

/// String truncation for debug output and logging.
/// Truncates a string to [end] characters and appends '...'
/// Example: ellipse('abcdefgh', 4) → 'abcd...'
String ellipse(String s, [int end = 4]) =>
    s.length > end ? '${s.substring(0, end)}...' : s;