tsconfig.json

{
  // Reference: https://www.typescriptlang.org/tsconfig
  "compilerOptions": {
    "incremental": true,
    "target": "es6",
    "outDir": "build/main",
    "rootDir": ".",
    "moduleResolution": "node",
    "module": "esnext",
    "declaration": true,
    "inlineSourceMap": true,
    "esModuleInterop": true,
    "allowJs": true,
    /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "resolveJsonModule": true,
    /* Include modules imported with .json extension. */
    "strict": true,
    /* Enable all strict type-checking options. */
    /* 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. */,

    /* 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. */
    /* Debugging Options */
    "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. */
    /* Experimental Options */
    // "experimentalDecorators": true /* Enables experimental support for ES7 decorators. */,
    // "emitDecoratorMetadata": true /* Enables experimental support for emitting type metadata for decorators. */,
    "lib": ["esnext", "dom"],
    "typeRoots": ["node_modules/@types"],
    "downlevelIteration": true
  },
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules/**", "test"],
  "compileOnSave": false
}