tsconfig.json

{
  "compilerOptions": {
    /* Visit https://aka.ms/tsconfig.json to read more about this file */

    /* Language and Environment */
    "target": "ES2020" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,

    /* Modules */
    "module": "commonjs" /* Specify what module code is generated. */,
    "rootDir": "./lib" /* Specify the root folder within your source files. */,
    "baseUrl": "./lib" /* Specify the base directory to resolve non-relative module names. */,

    /* Emit */
    "declaration": true,
    "declarationDir": "dist/types",
    "declarationMap": true /* Create sourcemaps for d.ts files. */,
    "emitDeclarationOnly": false /* Only output d.ts files and not JavaScript files. */,
    "sourceMap": true /* Create source map files for emitted JavaScript files. */,
    "outDir": "./dist" /* Specify an output folder for all emitted files. */,
    "removeComments": true /* Disable emitting comments. */,
    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */,
    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,

    /* Type Checking */
    "strict": false /* Enable all strict type-checking options. */,
    "noImplicitAny": false /* Enable error reporting for expressions and declarations with an implied `any` type.. */,
    "strictNullChecks": true /* When type checking, take into account `null` and `undefined`. */,
    "strictFunctionTypes": true /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */,

    /* Completeness */
    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
    "skipLibCheck": true /* Skip type checking all .d.ts files. */,

    "paths": {
      "~/*": ["./*"]
    },

    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "plugins": [
      {
        "transform": "typescript-transform-paths",
        "afterDeclarations": true
      }
    ]
  },
  "exclude": ["node_modules", "dist", "test"]
}