spacetac/tsconfig.json

{
    "compilerOptions": {
        "alwaysStrict": true,
        "module": "system",
        "forceConsistentCasingInFileNames": true,
        "noFallthroughCasesInSwitch": true,
        "noImplicitAny": false,
        "noImplicitThis": true,
        "noImplicitReturns": true,
        "removeComments": true,
        "preserveConstEnums": true,
        "out": "out/build.js",
        "strictNullChecks": false,
        "sourceMap": true,
        "target": "es5"
    },
    "exclude": [
        "out",
        "coverage",
        "node_modules"
    ]
}