tsconfig.dev.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "lib": ["esnext", "DOM"],
    "outDir": "dist",
    "declaration": true,
    "declarationDir": "./dist",

    "sourceMap": true,

    "target": "es5",
    "moduleResolution": "node",
    "module": "commonjs",
    "esModuleInterop": true,
    "skipLibCheck": true,

    "allowJs": true,
    "checkJs": false,

    "downlevelIteration": true,

    /* Strict Type-Checking Options */
    "strict": true /* Enable all strict type-checking options. */,
    "noImplicitAny": false /* 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": false /* 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": false /* Report errors on unused locals. */,
    "noUnusedParameters": false /* Report errors on unused parameters. */,
    "noImplicitReturns": false /* Report error when not all code paths in function return a value. */,
    "noFallthroughCasesInSwitch": false /* Report errors for fallthrough cases in switch statement. */,
    "resolveJsonModule": true,
    "experimentalDecorators": true /* Enables experimental support for ES7 decorators. */,
    "emitDecoratorMetadata": true /* Enables experimental support for emitting type metadata for decorators. */
  },
  "exclude": ["./dist", "./lib", "node_modules"]
}