See https://www.dartlang.org/install.
Installing Dart
Modules based on Dart require the version 1.23.x. Once installed, verify the version in a terminal:
$ pub version
Pub 1.23.0
Linux
Using APT:
sudo apt-get install apt-transport-https
sudo sh -c 'curl https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -'
sudo sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
sudo apt-get update
sudo apt-get install dart=1.23.0-1
sudo update-alternatives --install /usr/bin/dart dart /usr/lib/dart/bin/dart 0
sudo update-alternatives --install /usr/bin/pub pub /usr/lib/dart/bin/pub 0
sudo update-alternatives --install /usr/bin/dart2js dart2js /usr/lib/dart/bin/dart2js 0
See https://www.dartlang.org/install/linux for other Linux install options.
OS X
Using Homebrew:
brew tap dart-lang/homebrew-dart
curl -O https://raw.githubusercontent.com/dart-lang/homebrew-dart/b55507ab62b2e724b62e58a8e5363a726e34b7e7/dart.rb
sed -i '' -e 's/-EOS.undent/~EOS/' -e 's/MacOS.prefer_64_bit\?/true/' dart.rb
brew install dart.rb --with-dartium
rm dart.rb
See https://www.dartlang.org/install/mac for other Mac install options.
Windows
Using Chocolatey:
choco install dart-sdk -version 1.23.0
choco install dartium -version 1.23.0
See https://www.dartlang.org/install/windows for other Windows install options.
Dart Tools
Dart plugins exist for many commonly used IDEs. See https://www.dartlang.org/tools.