{ "extends": "./tsconfig.json", "compilerOptions": { "lib": [], "types": ["node"] // We don't override `module` to `CommonJS` here. // Whatever build tool you use, we recommend you to author and ship in ES modules. // The recommendation may change when `"module": "Node12" / "NodeNext"` is stable. // If you are targeting CommonJS environment, // and use `tsc` or `ts-node` for transpilation, // you might need to manually override the following fields: // "module": "CommonJS", // "preserveValueImports": false, } }