New error with 8.0.0? Error [ERR_REQUIRE_ESM]: require() of ES Module - How to resolve?

[lyricnz]

New error with 8.0.0? Error [ERR_REQUIRE_ESM]: require() of ES Module - How to resolve?

[lyricnz]

This feels like a tsconfig problem? My tsconfig.json file is

{
  "compilerOptions": {
    "target": "es2022",
    "module": "commonjs",
    "lib": [
      "es2022"
    ],
    "declaration": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "esModuleInterop": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": false,
    "inlineSourceMap": true,
    "inlineSources": true,
    "experimentalDecorators": true,
    "strictPropertyInitialization": false,
    "typeRoots": [
      "./node_modules/@types"
    ]
  },
  "exclude": [
    "node_modules",
    "dist"
  ]
}

and the generated .js file includes

Object.defineProperty(exports, "__esModule", { value: true });
const chai = __importStar(require("chai"));
const chai_as_promised_1 = __importDefault(require("chai-as-promised"));
const instrumentedResource_1 = require("../../drivers/instrumentedResource");
const driverInterface_1 = require("../../drivers/driverInterface");
chai.use(chai_as_promised_1.default);

[43081j]

you're in a commonjs project (module: "commonjs")

8.0.0 is esm-only (like chai 5.x is too)

so you can either:

• stay on 7.x if you want to continue using commonjs
• migrate to ESM ("module": "nodenext", and set "type": "module" in your package.json)

[lyricnz]

Thanks. It looks like doing that and I'll have to change 500+ imports to include explicit .js extension?

[43081j]

Node will probably still handle the imports without extensions but I guess typescript may complain if they're not exported paths 😬

It should be scriptable at least but I understand your pain (code review won't be a fun one)

You may be able to loosen typescript's constraints by using module: "bundler"