dart-use-ffigen

Generate type-safe Dart FFI bindings from native C/C++ headers with package:ffigen.

2.8k|166|Updated Feb 25, 2026
One-click install
npx skills add https://github.com/flutter/agent-plugins --skill dart-use-ffigen-flutter
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: dart-use-ffigen
Source: https://github.com/flutter/agent-plugins/tree/main/skills/dart-use-ffigen
Command: npx skills add https://github.com/flutter/agent-plugins --skill dart-use-ffigen-flutter

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires ffigen.

What problem does it solve?

This Skill eliminates the manual, error-prone process of writing Dart FFI bindings by automating the generation of type-safe code from native C/C++ header files.

Core Features & Use Cases

  • Automated Binding Generation: Uses package:ffigen to parse native headers and generate robust Dart FFI code.
  • Tree-Shaking Support: Configures metadata for native asset tree-shaking to optimize binary sizes.
  • Use Case: When integrating a C library like SQLite or a custom native module, use this skill to generate the necessary bindings and record-use mappings, ensuring the code is maintainable and follows best practices.

Quick Start

Use the dart-use-ffigen skill to generate FFI bindings for the native header file located in the third_party directory of this project.

Frequently Asked Questions about dart-use-ffigen

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate Dart FFI bindings from C header files?▼

To generate Dart FFI bindings from C header files, you can automate the process using package:ffigen to parse native headers and output type-safe Dart code. This eliminates manual binding errors and ensures maintainable native integration.

What is the best way to automate native library wrapping in Dart?▼

Automating native library wrapping in Dart is best achieved by using ffigen to parse C/C++ headers and generate type-safe bindings. This approach ensures robust code generation and supports native asset tree-shaking to optimize binary sizes.

Does ffigen support tree-shaking for native assets?▼

Yes, ffigen supports tree-shaking for native assets by configuring metadata for native asset tree-shaking. This optimization records use-mappings to reduce binary sizes when integrating native libraries like SQLite or custom modules.

How do I configure a programmatic generator script for ffigen?▼

Configuring a programmatic generator script for ffigen involves defining the native header file locations, such as in the third_party directory, and specifying the output placement in lib/src/third_party/ to ensure standard file organization.

When should I replace manual FFI implementations with an automated generator?▼

You should replace manual FFI implementations with an automated generator when integrating C libraries or custom native modules to eliminate error-prone manual coding. Using ffigen ensures maintainable, type-safe bindings following best practices.

What are the limitations of using ffigen for Dart native integration?▼

Limitations of using ffigen for Dart native integration include its reliance on parsing C/C++ header files, meaning it requires well-formed native headers and standard file placement in lib/src/third_party/ to generate type-safe bindings correctly.