tsconfig.json

{
    "compilerOptions": {
        "target": "es2015",
        "module": "commonjs",
        "moduleResolution": "node",
        "declaration": true,
        "noImplicitAny": false,
        "noUnusedLocals": false,
        "sourceMap": true,
        "inlineSources": true,
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "outDir": "./tmp",
        "rootDir": ".",
        "skipLibCheck": true,
        "typeRoots": ["./node_modules/@types"],
        "types": ["node", "fs-extra", "mongoose", "gridfs-stream"],
        "lib": ["dom", "es2015", "es2016", "es2017"]
    },
    "compileOnSave": false,
    "buildOnSave": false,
    "exclude": ["node_modules", "dist", "tmp"]
}