svelte/tsconfig.json

{
    "compilerOptions": {
        "types" : ["node"],
        "noImplicitAny": true,
        "diagnostics": true,
        "noImplicitThis": true,
        "noEmitOnError": true,
        "allowJs": true,
        "lib": ["es5", "es6", "dom"]
    },
    "target": "ES5",
    "include": [
        "src"
    ],
    "exclude": [
        "node_modules"
    ]
}