tsconfig.json

{
    "compilerOptions": {
      "target": "es2018",
      "outDir": "./build",
      "rootDir": "./src",
      "module": "commonjs",
      "moduleResolution": "node",
      "declaration": false,
      "inlineSourceMap": true,
      "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
      "strict": true /* Enable all strict type-checking options. */,
      "noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */,
      "strictNullChecks": true /* Enable strict null checks. */,
      "strictFunctionTypes": true /* Enable strict checking of function types. */,
      "strictPropertyInitialization": true /* Enable strict checking of property initialization in classes. */,
      "noImplicitThis": true /* Raise error on 'this' expressions with an implied 'any' type. */,
      "alwaysStrict": true /* Parse in strict mode and emit "use strict" for each source file. */,
  
      "resolveJsonModule": true,

      //"noUnusedLocals": true /* Report errors on unused locals. */,
      //"noUnusedParameters": true /* Report errors on unused parameters. */,
      "noImplicitReturns": true /* Report error when not all code paths in function return a value. */,
      "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,
  
      "traceResolution": false /* Report module resolution log messages. */,
      "listEmittedFiles": false /* Print names of generated files part of the compilation. */,
      "listFiles": false /* Print names of files part of the compilation. */,
      "pretty": true /* Stylize errors and messages using color and context. */,
  
      "experimentalDecorators": true /* Enables experimental support for ES7 decorators. */,
      "emitDecoratorMetadata": true /* Enables experimental support for emitting type metadata for decorators. */,
  
      "lib": [ "es2017", "dom" ],
      "types": [ "node" ],
      "typeRoots": [ "node_modules/@types", "src/types/**.d.ts" ],
      "baseUrl": "./src"
    },
    "include": [ "src/**/*.ts"],
    "exclude": ["node_modules/**"],
    "compileOnSave": false
  }