tsconfig.json

{
    "include": ["src/**/*", "typings/global.d.ts"],
    "exclude": ["node_modules/*"],
    "compilerOptions": {
        "lib": [
            "es5",
            "es6",
            "webworker",
            "dom",
            "dom.iterable",
            "es2016.array.include",
            "es2017.object",
            "es2016",
            "esnext.asynciterable"
        ],
        "target": "es2019",
        "module": "esnext",
        "moduleResolution": "node",
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "strict": true,
        "outDir": "./build/",
        "sourceMap": true,
        "noImplicitAny": true,
        "skipLibCheck": true,
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "typeRoots": ["node_modules/@types", "typings"],
        "baseUrl": ".",
        "paths": {
            "~/*": ["./src/*"]
        },
        "types": ["@pyoner/svelte-types", "@sapper", "openid"]
    }
}