tsconfig.json

{
    "compilerOptions": {
        /* Language and Environment */
        "target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
        "module": "commonjs" /* Specify what module code is generated. */,
        "rootDir": "./src" /* Specify the root folder within your source files. */,
        "outDir": "./dist" /* Specify an output folder for all emitted files. */,
        "typeRoots": [
            "./node_modules/@types",
            "./src/types"
        ] /* Specify multiple folders that act like `./node_modules/@types`. */,
        "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": true /* Enable all strict type-checking options. */,
        "noImplicitAny": true /* Enable error reporting for expressions and declarations with an implied 'any' type. */,
        "strictNullChecks": true /* When type checking, take into account 'null' and 'undefined'. */,
        "allowUnreachableCode": true /* Disable error reporting for unreachable code. */,
        "declaration": true /* Generates corresponding '.d.ts' file. */,

        /* Completeness */
        "skipLibCheck": true /* Skip type checking all .d.ts files. */
    },
    "exclude": ["src/**/*.test.ts", "dist/*"]
}