babel runtime helpers added with .js extension causing ERR_PACKAGE_PATH_NOT_EXPORTED in subpath that fail when running node


This Content is from Stack Overflow. Question asked by dagda1

I am using @babel/runtime with the useESModules: true options and it is causing helpers to be emitted like this with the .js file extension

import "@babel/runtime/helpers/esm/extends.js";

This causes the following error:

[ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath ‘./helpers/esm/extends.js’ is not defined by “exports” in myproject/node_modules/@babel/runtime/package.json

This is because this path conflicts with the package.json exports subpath pattern:

"exports": {
  "./helpers/extends": [
    "node": "./helpers/extends.js",
    "import": "./helpers/esm/extends.js",
    "default": "./helpers/extends.js"

Removing the file extensions fixes this problem.

Is there anyway to stop the file extensions getting added?


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