What is the best way to bring a "subdependency" into ES6?

I am dealing with a situation where I have a package called react-router, which relies on another package called path-to-regexp. The challenge is that react-router does not provide its own import of path-to-regexp. So, I am wondering how I can import the exact same version of path-to-regexp that react-router uses in my top-level module. Is this even possible?

Currently, I am using Yarn as my dependency manager, and I am contemplating utilizing its resolution configuration to address this issue. However, I am concerned that potential version discrepancies may arise in the future.

If only I could do something like

import path from 'react-router/node_modules/path-to-regexp'
, but unfortunately, that method does not seem to work. Alternatively, if I list path-to-regexp as a dependency in my top-level module, there is still a risk of encountering version mismatches in the long run. Perhaps there is a way to use node-semver globs to specify the same version as react-router in my package.json file?

Answer №1

In my opinion, utilizing the resolutions functionality of yarn emerges as the most optimal solution. It allows me to have an identical duplicate of a module within my project, even if I cannot reuse the exact same module. Moreover, if there happens to be a version disparity, yarn will promptly notify me with a warning, as stipulated in this RFC. Essentially, my package.json configuration resembles the below snippet...

"dependencies": {
  "react-router": "^4.2.0",
  "path-to-regexp": "^1.7.0" <-- same version as utilized by <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="97e5f2f6f4e3bae5f8e2e3f2e5d7a3b9a5b9a7">[email protected]</a>
},
"resolutions": {
  "path-to-regexp": "^1.7.0"
}

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