viem/account-abstraction breaks tree-shaking in v2.42.0+ due to EntryPoint v0.9 ABI

[gryyny]

Check existing issues

• I checked there isn't already an issue for the bug I encountered.

Viem Version

viem 2.42.0+ (works correctly in 2.41.2)

Current Behavior

After upgrading from viem 2.41.2 to 2.42.0+, Next.js build times increased from ~54 seconds to ~2:42 (3x slower).

Bundle analysis shows the entire entryPoint09Abi (~870 lines) is being included in the bundle even when only importing a simple constant like entryPoint07Address from viem/account-abstraction.

The new EntryPoint v0.9 ABI added in PR #4134 appears to break tree-shaking for the account-abstraction module.

Expected Behavior

Importing specific exports from viem/account-abstraction should only include those exports in the bundle.

Unused ABIs (like entryPoint09Abi) should be tree-shaken when not explicitly imported.

Steps To Reproduce

1. Create a Next.js 16 project with viem 2.42.0+
2. Import only a specific constant: import { entryPoint07Address } from 'viem/account-abstraction'
3. Run next build
4. Observe bundle includes the full EntryPoint v0.9 ABI (~870 lines) even though it wasn't imported

Workaround: Pin viem to 2.41.2

Link to Minimal Reproducible Example

N/A - issue is observable via bundle size analysis on any Next.js project using viem/account-abstraction

Anything else?

• Next.js 16.0.10 with Turbopack
• Build time regression: 54s → 2:42 (3x slower)
• Pinning to viem 2.41.2 resolves the issue
• Likely cause: entryPoint09Abi is referenced at module scope or the module has side-effects preventing tree-shaking
• Related: PR feat: entrypoint 0.9 + paymasterSignature #4134 (feat(account-abstraction): add entrypoint v0.9 support)

[jxom]

I cannot reproduce this. Can you please provide a minimal reproducible example? It will save us a lot of time reproducing your config & environment, and trying to reproduce your issue. See Why reproductions are required.

Please reopen this issue when a reproduction is added.