tsconfig.json

{
  "compilerOptions": {
    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
    "lib": ["es2018", "dom"],                /* Specify library files to be included in the compilation. */
    "declaration": true,                     /* Generates corresponding '.d.ts' file. */
    "downlevelIteration": true,              /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
    "strict": true,
    "rootDir": ".",
    "baseUrl": "./packages",
    "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. */
    "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. */
    "esModuleInterop": true,                 /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
  },
  "exclude": [
    "node_modules",
    "dist",
    "lib",
    "packages/pkg-test/template"
  ]
}