tsconfig.json

{
    "ts-node": {
        // these options are overrides used only by ts-node
        // same as our --compilerOptions flag and our TS_NODE_COMPILER_OPTIONS environment variable
        "compilerOptions": {
            "module": "commonjs",
            "typeRoots": ["./src/types", "./node_modules/@types"]
        }
    },
    "compilerOptions": {
        "target": "es2015",
        "allowJs": true,
        "skipLibCheck": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "strict": true,
        "forceConsistentCasingInFileNames": true,
        "module": "esnext",
        "moduleResolution": "node",
        "resolveJsonModule": true,
        "isolatedModules": true,
        "noEmit": true,
        "noImplicitAny": true,
        "jsx": "react-jsx",
        "noUnusedParameters": false,
        "noUnusedLocals": false,
        "strictNullChecks": true,
        "noUncheckedIndexedAccess": false,
        "experimentalDecorators": true,
        "noFallthroughCasesInSwitch": true,
        "lib": ["dom", "dom.iterable", "esnext"]
    },
    "include": ["src"]
}