feat: Soften duplicate contract name in the case contracts have identical ABIs

[silasdavis]

Foundry seems to duplicate some imported sub-files within a contract, for example:

<foundry root>/src/parts/primitives/Foo.sol

Is defined only once, and imported from <foundry root>/src/Bar.sol

But ends up appearing twice in artifacts directory:

<foundry root>/out/Foo.sol/Foo.json
<foundry root>/out/primitives/Foo.sol/Foo.json

In this case getArtifactPaths() in the Foundry plugin pick up the same contracts twice since they end up existing in multiple subdirectories of out/. I don't think there is a reliable to heuristic to de-duplicate them at this level.

It seems like duck-typing contracts by the ABI should be fine and may help other plugin sources. it could always be disabled by default and enabled via an option at the cost of yet more config

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Name	Status	Preview	Comments	Updated (UTC)
wagmi	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 2, 2025 0:08am

[silasdavis]

I just want to put this out for a sense check before going to town on the rest of contribution requirements, let me know what you think.

[silasdavis]

A bit more on why these duplicates might be seen from foundry,

These snippets are are target from two duplicated foundry artifacts.

the first appears under out/:

      "compilationTarget": {
        "src/Foo.sol": "Foo"
      },

the second under out/src/:

      "compilationTarget": {
        "../project/src/Foo.sol": "Foo"
      },

Where we are compiling in the Foundry project project, but we do have some other Foundry projects that import from each other, so it seems to be that the way Foundry processes the Solidity compiler output causes these duplicates, which probably isn't really a bug, so would be nice if wagmi supports this.

[silasdavis]

I've implemented a similar fix in the foundry.ts plugin source itself which I am using as a local vendored patch, let me know if you'd prefer that version.