tsconfig.json

{
    "compilerOptions": {
        "target": "es2018",
        "module": "commonjs",
        "lib": ["es5", "es6", "es2015", "es2016", "es2017", "es2018", "esnext"],
        "declaration": true,
        "sourceMap": true,
        "outDir": "./dist",
        "removeComments": true,
        "strict": true,
        "noImplicitAny": false,
        "strictNullChecks": true,
        "strictFunctionTypes": true,
        "strictPropertyInitialization": true,
        "noImplicitThis": true,
        "alwaysStrict": true,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "noImplicitReturns": true,
        "noFallthroughCasesInSwitch": true,
        "moduleResolution": "node",
        "rootDirs": ["./", "./src"],
        "typeRoots": ["./types", "./@types", "node_modules/@types"],
        "types": ["node", "jest"],
        "esModuleInterop": true,
        "preserveConstEnums": true,
        "suppressImplicitAnyIndexErrors": true,
        "forceConsistentCasingInFileNames": true,
        "incremental": true,
        "resolveJsonModule": true
    },
    "include": ["src"],
    "exclude": ["node_modules", "**/__tests__/*", "coverage"]
}