>_SkillsHub▋

> flutter-design-system

Enforce Design Language System adherence in Flutter. Use when enforcing design tokens, preventing hardcoded colors/spacing, or implementing a DLS in Flutter. (triggers: **/theme/**, **/*_theme.dart, **/*_colors.dart, **/*_dls/**, **/foundation/**, **/presentation/**, **/ui/**, **/widgets/**, ThemeData, ColorScheme, AppColors, VColors, VSpacing, AppTheme, design token)

fetch
$curl "https://skillshub.wtf/HoangNguyen0403/agent-skills-standard/flutter-design-system?format=md"
SKILL.md•flutter-design-system

Flutter Design System Enforcement

Priority: P0 (CRITICAL)

Zero tolerance for hardcoded design values.

Phase 0: Context Discovery (MANDATORY)

Before any UI refactoring, you MUST identify the project's Theme Archetype:

  1. Check main.dart: Look for MaterialApp theme configuration.
  2. Determine Pattern:
    • Theme-Driven (Adaptive): If you see VThemeData(...).toThemeData() or extensive ThemeData overrides, you MUST use Theme.of(context).textTheme or theme.textTheme for feature code.
    • Token-Driven (Static): Only use static tokens (VTypography.*) if there is no global theme bridge or if you are defining the theme itself.

Guidelines

  • Colors: Use tokens (VColors.*, AppColors.*), never Color(0xFF...) or Colors.red.
  • Spacing: Use tokens (VSpacing.*), never magic numbers like 16 or 24.
  • Typography: Prioritize theme.textTheme.* for adaptive UI. Use VTypography.* tokens only for theme definitions or non-contextual logic. Never use inline TextStyle.
  • Borders: Use tokens (VBorders.*), never raw BorderRadius.
  • Components: Use DLS widgets (VButton) over raw Material widgets (ElevatedButton) if available.

Detailed Examples

Anti-Patterns

  • No Hex Colors: Color(0xFF...) is strictly forbidden.
  • No Color Enums: Colors.blue is forbidden in UI code.
  • No Magic Spacing: SizedBox(height: 10) is forbidden.
  • No Inline Styles: TextStyle(fontSize: 14) is forbidden.
  • No Raw Widgets: Don't use ElevatedButton when VButton exists.

Related Topics

mobile-ux-core | flutter/widgets | idiomatic-flutter

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┌ stats

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github stars452
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first seenMar 17, 2026
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┌ repo

HoangNguyen0403/agent-skills-standard
by HoangNguyen0403
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┌ tags

#mobile
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