babel-maven-plugin not transpiling spread operator to ES5 - ecmascript-6

Question

I am using DOJO toolkit and after upgrading to use the closure compiler, I noticed I needed to transpile to ES5 BEFORE the dojo build util does it's job in order to take advantage of newer ES6+ features.
So I am using babel-maven-plugin to accomplish this.
Everything is working fine with the exception that the ...spread operator is not transpiling.
Do I need to download the #babel/preset-env package as well to set the preset option? or is there an option I am missing?

Answer 1

After further discovery there is no need to download any preset package.
babel-standalone takes in preset options through its API as defined here and use in the babel-maven-plugin here.
The preset option is not passed to the Babel API like defined in a .babelrc config file. It is passed in without the preset- prefix. So to get the #babel/preset-env preset option you need to simply pass in env.
So to round this out, here are the common presets and how you would pass them through to the API:
#babel/preset-env --> env
#babel/preset-react --> react
#babel/preset-flow --> flow
#babel/preset-typescript --> typescript
So in order to use babel-maven-plugin I need to set up the pom.xml as follows:
<plugin>
<groupId>com.jarslab.maven</groupId>
<artifactId>babel-maven-plugin</artifactId>
<version>1.6</version>
<executions>
<execution>
<id>js-transpile</id>
<phase>process-resources</phase>
<goals>
<goal>babel</goal>
</goals>
<configuration>
<verbose>true</verbose>
<babelSrc>./js/babel/babel.min.js</babelSrc>
<sourceDir>./js</sourceDir>
<targetDir>./js</targetDir>
<presets>env</presets>
</configuration>
</execution>
</executions>
</plugin>