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Dart Services

A server backend to support DartPad.

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What is it? What does it do?

This project is a small, stateless Dart server, which powers the front-end of DartPad. It provides many of DartPad's features, including static analysis (errors and warnings), compilation to JavaScript, code completion, dartdoc information, code formatting, and quick fixes for issues.


To run the server, run:

dart bin/server_dev.dart --port 8082

The server will run from port 8082 and export several JSON APIs, like /api/compile and /api/analyze.


To run tests:

grind test for unit tests


grind deploy for all tests and checks.

dart-services requires the redis package, including the redis-server binary, to be installed to run tests. sudo apt-get install redis-server will install this on Ubuntu, but see Redis' Quick Start guide for other platforms.


To deploy the server to Dart on AppEngine, follow the instructions here.

Modify warmup.dart to point the BASE_URI to your AppEngine project.

Then run


The will deploy the server, and run the warmup sequence and sanity checks.

Related projects

See also the dart-pad repo.

Issues and bugs

Please file reports on the GitHub Issue Tracker for DartPad.

License and Contributing

Contributions welcome! Please read this short guide first. You can view our license here.