CLI Completion

Very Good Ventures Very Good Ventures

ci coverage pub package style: very good analysis License: MIT


Completion functionality for Dart Command-Line Interfaces built using CommandRunner.

Developed with 💙 by Very Good Ventures 🦄

Installation 💻

❗ In order to start using CLI Completion you must have the Dart SDK installed on your machine.

flutter pub add cli_completion

Usage ✨

On your CommandRunner class, extend CompletionCommandRunner :

import 'package:cli_completion/cli_completion.dart';

class ExampleCommandRunner extends CompletionCommandRunner<int> {

This will make the first command run to install the completion files automatically. To disable that behavior, set enableAutoInstall to false:

class ExampleCommandRunner extends CompletionCommandRunner<int> {
  bool get enableAutoInstall => false;

When enableAutoInstall is set to false, users will have to call install-completion-files to install these files manually.

$ example_cli install-completion-files

Documentation 📝

For an overview of how this package works, check out the documentation.

Troubleshooting 🧠🔨

Tab completion is taking too long

Handling completion requests should be straightforward.

If there are any checks (like analytics, telemetry, or anything that you may have on run or runCommand overrides) before running subcommands, make sure you fast track the completion command to skip all of the unnecessary computations.


Future<int?> runCommand(ArgResults topLevelResults) async {
  if (topLevelResults.command?.name == 'completion') {
  // ... analytics and other unrelated stuff 

Tab completion is not working on my zsh terminal

If you are not using any zsh framework such as Oh My Zsh, you have to start the completion system manually.

Add the following lines to your ~/.zshrc file:

# Add this to the start of your zsh starter file (~/.zshrc)
autoload -Uz compinit


Contains the completion command runner based elements to add completion to dart command line applications.
Contains the functions related to the installation process
Contains the classes and functions related to the creation of suggestions for the completion of commands.