tsconfig.json

{
  "compilerOptions": {
    // Project options
    "allowJs": true, // Allow JavaScript files to be imported inside your project, instead of just .ts and .tsx files
    "declaration": true, // Generate .d.ts files for every TypeScript or JavaScript file inside your project
    "lib": ["es2018"], // Specifies which default set of type definitions to use ("DOM", "ES6", etc)
    "module": "commonjs", // Sets the module system for the program. "CommonJS" for node projects.
    "noEmit": false, // Do not emit compiler output files like JavaScript source code, source-maps or declarations.
    "outDir": "dist", // .js (as well as .d.ts, .js.map, etc.) files will be emitted into this directory
    "rootDir": "./src", // The longest common path of all non-declaration input files
    "sourceMap": true, // Enables the generation of sourcemap files
    "target": "es6", // Target environment

    // Module resolution
    "allowSyntheticDefaultImports": true,
    "baseUrl": "./", // Sets a base directory to resolve non-absolute module names
    "esModuleInterop": true, // fixes some issues TS originally had with the ES6 spec where TypeScript treats CommonJS/AMD/UMD modules similar to ES6 module
    "moduleResolution": "node", // Pretty much always node for modern JS. Other option is "classic"

    // Advanced
    "forceConsistentCasingInFileNames": true, // TypeScript will issue an error if a program tries to include a file by a casing different from the casing on disk
    "listEmittedFiles": false, // Print names of generated files part of the compilation
    "listFiles": false, // Print names of files part of the compilation
    "resolveJsonModule": true, // Allows importing modules with a ‘.json’ extension, which is a common practice in node projects
    "skipLibCheck": true, // Skip type checking of declaration files
    "traceResolution": false, // Report module resolution log messages
    "useUnknownInCatchVariables": false,

    // Experimental
    "experimentalDecorators": false, // Enables experimental support for decorators
    "emitDecoratorMetadata": false, // Enables experimental support for emitting type metadata for decorators which works with the module

    // Strict checks
    "strict": true, // Enable all strict type-checking options
    // "allowUnreachableCode": false, // Pick up dead code paths
    // "alwaysStrict": true, // Parse in strict mode and emit "use strict" for each source file
    "noImplicitAny": true, // Raise error on expressions and declarations with an implied 'any' type
    // "noImplicitThis": true, // Raise error on 'this' expressions with an implied 'any' type
    // "strictFunctionTypes": true, // Enable strict checking of function types
    // "strictNullChecks": true, // Enable strict null checks
    "strictPropertyInitialization": false, // Enable strict checking of property initialization in classes

    // Linter Checks
    "noFallthroughCasesInSwitch": true, // Report errors for fallthrough cases in switch statement
    "noImplicitReturns": false, // Report error when not all code paths in function return a value
    "noUnusedLocals": true, // Report errors on unused local variables
    "noUnusedParameters": true, // Report errors on unused parameters
    "pretty": true // Stylize errors and messages using color and context
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    "node_modules",
    "test"
  ]
}