tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "sourceMap": true,
    "outDir": "./dist",
    "declaration": false,
    "module": "commonjs",
    "importHelpers": true,
    "removeComments": true,
    "downlevelIteration": true,
    "lib": ["es2015", "es2016", "es2017"],

    "strict": true,
    "alwaysStrict": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    // "noUnusedParameters": true,
    "strictFunctionTypes": true,
    "noFallthroughCasesInSwitch": true,

    "baseUrl": "./",
    "esModuleInterop": true,
    "preserveSymlinks": true,
    "resolveJsonModule": true,
    "moduleResolution": "node",
    "types": ["jest", "node", "express"],
    "allowSyntheticDefaultImports": true,
    "paths": {
      "*": ["node_modules/*", "src/types/*"]
    },

    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  },
  "lib": ["es2015"],
  "include": ["src/**/*.ts", "knexfile.ts", "src/**/*.spec.ts", "tests/**/*.spec.ts"],
  "exclude": ["node_modules"]
}