Browser field not resolved correctly if in a sub package

[luismeyer]

Do you want to request a feature or report a bug?

bug

What is the current behavior?

When importing a module that redirects another import using the browser field in the package.json and the module is a sub package (like @foo/module) the import is not resolved correctly.

Metro is looking for the module in node_modules/@foo instead of node_modules/@foo/module

If the current behavior is a bug, please provide the steps to reproduce and a minimal repository on GitHub that we can yarn install and yarn test.

npm init -y
npm i @vercel/blob metro
echo 'require("@vercel/blob");' >> index.js
npx metro build index.js --out bundle.js

The following error is thrown:

None of these files exist:
  * node_modules/@vercel/dist/undici-browser.js(.web.js|.native.js|.js|.web.jsx|.native.jsx|.jsx|.web.json|.native.json|.json|.web.ts|.native.ts|.ts|.web.tsx|.native.tsx|.tsx)
  * node_modules/@vercel/dist/undici-browser.js/index(.web.js|.native.js|.js|.web.jsx|.native.jsx|.jsx|.web.json|.native.json|.json|.web.ts|.native.ts|.ts|.web.tsx|.native.tsx|.tsx)

What is the expected behavior?

The module should be resolved to node_modules/@vercel/blob/dist/undici-browser.js

Please provide your exact Metro configuration and mention your Metro, node, yarn/npm version and operating system.

Node: v20.11.1
npm: 10.2.4
OS: macOS Sonoma 14.4.1

Related Issues:
expo/expo#28222
vercel/storage#505