We're using GitHub Issues. Please let us know what issues you find!

You can get information on installing JDK7 at the java site.

1. Download and install it to your user (not to the entire machine)
2. Before running mvn install run the following to set the JDK7 as your default compiler

export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)

If you run into problems with this when working on OSX (due to the default Apple JDK) run the following command to make sure the JDK7 installed properly:

$ /usr/libexec/java_home -V
Matching Java Virtual Machines (4):
    1.8.0, x86_64:  "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home
    1.7.0_67, x86_64:   "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_67.jdk/Contents/Home
    1.6.0_65-b14-462, x86_64:	"Java SE 6"	/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
    1.6.0_65-b14-462, i386:	"Java SE 6"	/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

If you're missing the line starting 1.7.0 then the JDK7 didn't install properly.

1. git clone https://github.com/dynjs/dynjs.git && cd dynjs
2. mvn install -s support/settings.xml

Alternatively download the latest dynjs dist zip package from our CI job, then unpack it somewhere. As a convenience, you can symlink bin/dynjs to some directory listed on your $PATH.

Run ./bin/dynjs --console for the REPL and try the snippet below:

var x = 1 + 1;
print(x);

For more options, run ./dynjs --help.