tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "incremental": true /* Enable incremental compilation */,
    "target": "ES2019" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "composite": true /* Enable project compilation */,
    "noEmit": true /* Do not emit outputs. */,
    "noErrorTruncation": true /* Do not truncate error messages */,
    "skipLibCheck": true /* Skip type checking of declaration files. Requires TypeScript version 2.0 or later. */,
    "importHelpers": true /* Import emit helpers from 'tslib'. */,

    "resolveJsonModule": true,
    /* Strict Type-Checking Options */
    "strict": true /* Enable all strict type-checking options. */,

    /* 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. */,
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,

    /* Module Resolution Options */
    "moduleResolution": "node" /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
    "allowSyntheticDefaultImports": true /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,

    /* Source Map Options */
    "inlineSourceMap": true /* Emit a single file with source maps instead of having a separate file. */,
    "inlineSources": true /* 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. */
  }
}