gulp-bower-files/test/_env_based_bower.json

Build gulp.src() of your bower packages main files.

{
    "dependencies": {
        "envBased": "*"
    },
    "overrides": {
        "envBased": {
            "main": {
                "prod": "prod.js",
                "dev": "dev.js"
            }
        }
    }
}