[fix] "Object prototype may only be an Object or null: undefined" from supertest in browser contexts

[codders]

Describe the bug

Node.js version: 20.10.0

OS version: debian trixie/sid

Description: Including supertest in a cypress project results in the error Object prototype may only be an Object or null: undefined when supertest tries to include superagent.

Actual behavior

Creating a blank cypress project and including supertest as a requirement in any spec file generates the error

Object prototype may only be an Object or null: undefined

With the backtrace:

      at Function.setPrototypeOf (<anonymous>)
      at ./node_modules/supertest/lib/agent.js (webpack://cypress-supertest-issue-minimal/./node_modules/supertest/lib/agent.js:36:0)
      at __webpack_require__ (webpack://cypress-supertest-issue-minimal/webpack/bootstrap:19:0)
      at ./node_modules/supertest/index.js (webpack://cypress-supertest-issue-minimal/./node_modules/supertest/index.js:9:14)
      at __webpack_require__ (webpack://cypress-supertest-issue-minimal/webpack/bootstrap:19:0)
      at eval (webpack://cypress-supertest-issue-minimal/./cypress/e2e/spec.cy.js:1:18)

Expected behavior

It should be possible to require (and use) the library without issue, as was the case until version 6.2.4.

Code to reproduce

I created an example project with a minimal reproduction here: https://github.com/codders/cypress-supertest-issue-minimal

Checklist

• I have searched through GitHub issues for similar issues.
• I have completely read through the README and documentation.
• I have tested my code with the latest version of Node.js and this package and confirmed it is still not working.

[titanism]

Cypress/Webpack applies SuperAgent browser mapping to Node-only supertest agent, leaving agent undefined. Run supertest on Cypress Node/task side or configure resolution; browser-bundled supertest needs separate design.

v10.4.0 is available on npm: https://www.npmjs.com/package/superagent/v/10.4.0
GitHub release: https://github.com/forwardemail/superagent/releases/tag/v10.4.0

Consider supporting our efforts to maintain this project by using Forward Email at https://forwardemail.net. We run the only 100% open source and 3rd party audited email service in the world.

[titanism]

Closing this for now. If this still affects v10.4.0, please open a new issue with a current reproduction.

v10.4.0 is available on npm: https://www.npmjs.com/package/superagent/v/10.4.0
GitHub release: https://github.com/forwardemail/superagent/releases/tag/v10.4.0

Consider supporting our efforts to maintain this project by using Forward Email at https://forwardemail.net. We run the only 100% open source and 3rd party audited email service in the world.