Babylon.js/Viewer/tsconfig-gulp.json

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "noResolve": false,
        "noImplicitAny": false, //mainly due to usage of external libs without typings.
        "strictNullChecks": true,
        "removeComments": true,
        "preserveConstEnums": true,
        "sourceMap": false,
        "experimentalDecorators": true,
        "isolatedModules": false,
        "declaration": false,
        "lib": [
            "dom",
            "es2015.promise",
            "es5"
        ]
    }
}