tsconfig.json

{
  "compilerOptions": {

    /* Basic Options */                       
    "target": "es2017",                    /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */
    "module": "commonjs",                  /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'. */
    "lib": ["es2015", "es6", "es7", "dom"],/* Specify library files to be included in the compilation:  */
    "allowJs": false,                      /* Allow javascript files to be compiled. */
    "checkJs": false,                      /* Report errors in .js files. */
    "declaration": true,                  /* Generates corresponding '.d.ts' file. */
    "outDir": "dist",                      /* Redirect output structure to the directory. */
    "removeComments": true,                /* Do not emit comments to output. */
    "noEmit": false,                       /* Do not emit outputs. */
    "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
    "isolatedModules": false,              /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */

    /* Strict Type-Checking Options */        
    "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. */
    "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. */

    /* Additional Checks */                   
    "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. */

    /* Module Resolution Options */           
    "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */

    /* Source Map Options */                  
    "inlineSourceMap": true,              /* Emit a single file with source maps instead of having a separate file. */
    "inlineSources": false,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */

    /* Experimental Options */                
    "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
    "emitDecoratorMetadata": true          /* Enables experimental support for emitting type metadata for decorators. */
  },
  "include": [
    "./src/**/*",
    "./test/**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}