...
> @opentelemetry/[email protected] test
> nyc mocha 'test/**/*.test.ts'


 Exception during run: file:///D:/a/opentelemetry-js/opentelemetry-js/api/test/tree-shaking/tree-shaking.test.ts:20
import { IFS, Union } from 'unionfs';
         ^^^
SyntaxError: Named export 'IFS' not found. The requested module 'unionfs' is a CommonJS module, which may not support all module.exports as named exports.
CommonJS modules can always be imported via the default export, for example using:

import pkg from 'unionfs';
const { IFS, Union } = pkg;

    at ModuleJob._instantiate (node:internal/modules/esm/module_job:228:21)
    at async ModuleJob.run (node:internal/modules/esm/module_job:335:5)
...