Cannot use "ECMASCRIPT5" or "ECMASCRIPT5_STRICT" as values for closureLanguage

[smartboyathome]

I am using version 1.7.3 of your plugin with the closure compiler, and when I specify either "ECMASCRIPT5" or "ECMASCRIPT5_STRICT" as the value of closureLanguage, it fails to compile, outputting "com.google.javascript.jscomp.CompilerOptionsValidator$InvalidOptionsException: Can only convert code from ES6 to ES3. Cannot convert from ECMASCRIPT5 to ECMASCRIPT3." The ant compiler had a similar problem (see google/closure-compiler#566) and they solved it by adding the ability to specify ES6/ECMASCRIPT6. It would be nice if you could add this as well.

[smartboyathome]

Forcing a newer version of the closure compiler via below solved the problem for me:

 <plugin>
    <groupId>com.samaxes.maven</groupId>
    <artifactId>minify-maven-plugin</artifactId>
    <version>1.7.3</version>
    <dependencies>
        <dependency>
            <groupId>com.google.javascript</groupId>
            <artifactId>closure-compiler</artifactId>
            <version>v20140814</version>
        </dependency>
    </dependencies>
    <executions>
        ...
    </executions>
</plugin>

If you could update the version provided that would prevent others from running into this.

[samaxes]

Thanks for the update.
I'll try to upload a new version this weekend or during next week.

[samaxes]

Pushed into master branch.