tsconfig.json

{
    "compilerOptions": {
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "removeComments": false,
        "declaration": true,
        "lib": ["es2020"],
        "target": "es2020",                                /* 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'. */
        "sourceMap": true,                           /* Generates corresponding '.map' file. */
        "outDir": "./build",                              /* Redirect output structure to the directory. */
        "rootDir": "./",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
        "strict": true,                                 /* Enable all strict type-checking options. */
        "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
        "skipLibCheck": true,                           /* Skip type checking of declaration files. */
        "forceConsistentCasingInFileNames": true        /* Disallow inconsistently-cased references to the same file. */
    },
    "include": [
        "src"
    ],
    "exclude": [
        "node_modules",
        "test"
    ]
}