atom-typescript: tsconfig.json The project file contains invalid JSON

I was just trying to get started again with Atom TypeScript on an existing TypeScript project. I created a basic tsconfig.json, but keep getting an error about The project file contains invalid JSON.

{
    "compilerOptions": {
        "target": "es5",
        "module": "amd",
        "declaration": false,
        "noImplicitAny": false,
        "removeComments": true
    },
    "filesGlob": [
        "./**/*.ts",
        "!node_modules/**/*.ts"
    ]
}

I get the same error with a tsconfig.json of

{}