ts-r
  • Error
  • Reported by the type checker

TS1192

Module '{0}' has no default export.

A default import names a module that has no default export. Import a named export instead, or add a default export.

What it means

import x from "./mod" reads the module's default export. If the module only has named exports, there's nothing to import. With esModuleInterop or allowSyntheticDefaultImports some CommonJS modules can be default-imported, but ES modules without a default export never can.

Example

index.ts
import config from './config';
export { config };
config.ts
export const port = 8080;
tsconfig.json
{
  "compilerOptions": {
    "strict": true,
    "target": "es2022",
    "module": "esnext",
    "moduleResolution": "bundler",
    "noEmit": true,
    "esModuleInterop": false,
    "allowSyntheticDefaultImports": false
  }
}
ts-r-check -p tsconfig.json --pretty false ts-r output
index.ts(1,8): error TS1192: Module '"./config"' has no default export.

Recorded by node scripts/verify-examples.mjs with ts-r built from commit 6deaf01.

How to fix

  • Import the named export: import { port } from "./config";.
  • Or import the whole module as a namespace: import * as config from "./config";.
  • If you own the module, add export default ... to it.