frameworks/projects/Flat/asconfig.json

{
    "config": "royale",
    "type": "lib",
    "compilerOptions": {
        
        "debug": true,
        "targets":[
            "SWF",
            "JSRoyale"
        ],
        "define": [
            {
                "name": "COMPILE::SWF",
                "value": true
            },
            {
                "name": "COMPILE::JS",
                "value": false
            }
        ]
    },
    "files":
    [
        "src/main/royale/FlatClasses.as"
    ]
}