ERR_MODULE_NOT_FOUND error has undefined code

[ldiqual]

Search Terms

code. Found this but not sure if related.

Expected Behavior

When wrapping an import with try/catch, and when pointing the import to a TS file that does not exist, the error caught should have code = ERR_MODULE_NOT_FOUND.

ts-node seems to properly throw this error here: https://github.com/TypeStrong/ts-node/blob/8b09d49b26c1c25e34133b857c073729dd691f11/raw/node-internal-modules-esm-resolve-v15.3.0.js#L258-L259

Actual Behavior

err.code is undefined in ESM context, but defined in CommonJS context, when caught in the importing script.

Steps to reproduce the problem

ESM

// error.mjs, call with `ts-node ./error.mjs`
try {
  await import('./test.ts') // Does not exist
} catch (err) {
  console.log(err.stack) // Has the proper message & stack (Cannot find module...)

  // Undefined, should be ERR_MODULE_NOT_FOUND
  // Note that if you run the same code with `node` instead, code is defined.
  console.log(err.code)
}

CommonJS

// error.cjs, call with `ts-node ./error.cjs`
try {
  require('./test.ts') // Does not exist
} catch (err) {
  console.log(err.stack) // Has the proper message & stack (Cannot find module...)
  console.log(err.code) // MODULE_NOT_FOUND
}

Specifications

• ts-node version: v10.9.1
• node version: v16.16.0
• TypeScript version: v4.7.4
• tsconfig.json, if you're using one:

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "target": "es2021",
    "lib": ["es2021"],
    "module": "node16",
    "moduleResolution": "node16",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "allowSyntheticDefaultImports": true,
    "allowJs": true,
    "useUnknownInCatchVariables": false,
    "composite": true,
    "declaration": true,
    "removeComments": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "noUnusedLocals": true,
    "resolveJsonModule": true,
    "preserveSymlinks": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "incremental": true
  },
  "ts-node": {
    "transpileOnly": true,
    "swc": true,
    "esm": true
  }
}

• Operating system and version: macOS 12.5

[thetutlage]

Spent an hour debugging the same. Can we please look into this?