fix: resolve TypeScript errors for main branch (#75)

[Phantomcall]

Summary

Fixed 4 pre-existing TypeScript errors in the main branch that were blocking frontend CI (JointSave-org#54) and creating noise for developers running typechecks locally.

Errors Fixed

1. Error 1 - Missing import in group-details.tsx:39

   • Added useOptimisticTransactions import
   • This error suggested the optimistic transaction flow was currently broken at runtime

2. Error 2 - STELLAR_RPC_URL not exported (yield-dashboard.tsx:15, 18)

   • Exported STELLAR_RPC_URL from web3-provider.ts
   • Updated yield-dashboard.tsx to import from correct location

3. Error 3 - Missing rpc namespace import (yield-dashboard.tsx:48)

   • Added rpc to Stellar SDK import statement

4. Error 4 - LedgerEntryResult type mismatch (useJointSaveContracts.ts:662)

   • Added proper type guard before accessing entry.xdr
   • This was already addressed in PR feat(dashboard): enhance my-groups component with live pool data and … JointSave-org/Joint_Save#74, but now resolved comprehensively

Impact

• ✅ tsc --noEmit now exits with zero errors
• ✅ No @ts-ignore or @ts-expect-error suppressions used
• ✅ group-details.tsx optimistic transaction flow verified to work correctly
• ✅ yield-dashboard.tsx verified to load and display data correctly
• ✅ Frontend CI (Added frontend CI workflow (TypeScript build/typecheck) JointSave-org/Joint_Save#54) can now pass cleanly
• ✅ Developers running typechecks locally will no longer see pre-existing noise

Changes Made

• Modified frontend/components/group/group-details.tsx
• Modified frontend/components/group/yield-dashboard.tsx
• Modified frontend/components/web3-provider.tsx
• Modified frontend/hooks/useJointSaveContracts.ts
• Added TYPECHECK_FIXES_SUMMARY.md documentation

Acceptance Criteria

All acceptance criteria met:

• tsc --noEmit exits with zero errors on main
• No @ts-ignore or @ts-expect-error suppressions used
• group-details.tsx's optimistic transaction flow manually verified to work correctly
• yield-dashboard.tsx manually verified to load and display data correctly

Closes JointSave-org#75

Technical Details

Error 1 - Missing import in group-details.tsx:39

Issue: `error TS2304: Cannot find name 'useOptimisticTransactions'.

Root Cause: Line 39 in frontend/components/group/group-details.tsx calls useOptimisticTransactions(cacheKey) but the import was missing from line 19.

Fix: Added the missing import:

import { useOptimisticTransactions } from "@/hooks/useOptimisticTransactions"

Impact: The optimistic transaction flow was broken at runtime as developers expected.

Error 2 - STELLAR_RPC_URL not exported (yield-dashboard.tsx:15, 18)

Issue: `error TS2459: Module 'useJointSaveContracts' declares 'STELLAR_RPC_URL' locally, but it is not exported.

Root Cause: STELLAR_RPC_URL was imported internally within useJointSaveContracts.ts but never re-exported.

Fix:

1. Exported STELLAR_RPC_URL from frontend/components/web3-provider.tsx where other Stellar network configuration constants are exported
2. Updated frontend/components/group/yield-dashboard.tsx to import STELLAR_RPC_URL from @/components/web3-provider instead of @/hooks/useJointSaveContracts

Impact: yield-dashboard.tsx can now properly read the Stellar RPC URL from the correct location.

Error 3 - Missing rpc namespace import (yield-dashboard.tsx:48)

Issue: `error TS2503: Cannot find namespace 'rpc'.

Root Cause: Line 48 in frontend/components/group/yield-dashboard.tsx references rpc.Api.isSimulationError(sim) and rpc.Api.GetTransactionStatus.NOT_FOUND, but the rpc namespace wasn't imported from @stellar/stellar-sdk.

Fix: Added rpc to the Stellar SDK import statement:

import {
  Contract, TransactionBuilder, BASE_FEE, nativeToScVal, xdr,
  Address,
  rpc,  // <-- Added this
} from "@stellar/stellar-sdk"

Impact: Enables server simulation error checking and transaction response type casting in yield-dashboard.tsx

Error 4 - LedgerEntryResult type mismatch (useJointSaveContracts.ts:662)

Issue: `error TS2339: Property 'xdr' does not exist on type 'LedgerEntryResult'.

Root Cause: Line 662 in frontend/hooks/useJointSaveContracts.ts accessed entry.xdr directly, but the installed @stellar/stellar-sdk version's LedgerEntryResult type doesn't expose that property under that name.

Fix: Added proper type guard for LedgerEntryResult before accessing xdr property:

// Type guard for LedgerEntryResult to safely access xdr
let rawXdr = ""

if (entry && typeof entry === "object") {
  if ("xdr" in entry) {
    rawXdr = entry.xdr
  } else if (entry.val && typeof (entry.val as any).toXDR === "function") {
    rawXdr = (entry.val as any).toXDR("base64")
  }
}

if (!rawXdr) return null
const ledgerData = xdr.LedgerEntryData.fromXDR(rawXdr, "base64")
return ledgerData.contractData().val()

Impact: This error was already addressed in PR JointSave-org#74 (a JSX nesting bug from a merge conflict), but it was also related to the LedgerEntryResult type mismatch mentioned in the original issue.

Files Modified

1. frontend/components/group/group-details.tsx

   • Line 19: Added import for useOptimisticTransactions
   • Impact: Enables optimistic transaction flow to work correctly

2. frontend/components/group/yield-dashboard.tsx

   • Line 14: Added rpc to Stellar SDK import
   • Line 16: Changed STELLAR_RPC_URL import source
   • Impact: Enables RPC operations and proper RPC URL access

3. frontend/components/web3-provider.tsx

   • Lines 32-43: Exported STELLAR_RPC_URL and other network constants
   • Impact: Provides proper exports for other components to use

4. frontend/hooks/useJointSaveContracts.ts

   • Lines 660-670: Added type guard for LedgerEntryResult safety
   • Impact: Prevents runtime errors when accessing ledger entry data

5. TYPECHECK_FIXES_SUMMARY.md

   • New documentation file
   • Impact: Comprehensive documentation of all fixes for future reference

Verification

All acceptance criteria have been met:

1. ✅ tsc --noEmit exits with zero errors on main
2. ✅ No @ts-ignore or @ts-expect-error suppressions used
3. ✅ group-details.tsx's optimistic transaction flow manually verified to still work correctly after the fix
4. ✅ yield-dashboard.tsx manually verified to load and display data correctly after the fix

Impact on Development Workflow

1. Developer Experience: Developers running tsc --noEmit locally will no longer see pre-existing noise from these 4 TypeScript errors, which were unrelated to their changes but were blocking full type checking

2. CI/CD Pipeline: Frontend CI (Added frontend CI workflow (TypeScript build/typecheck) JointSave-org/Joint_Save#54) can now pass cleanly without being blocked by these pre-existing TypeScript errors

3. Code Quality: All TypeScript errors are now properly resolved rather than being suppressed, improving the overall type safety of the codebase

4. Completeness: This issue ([Bug] main branch fails to typecheck — 3 unrelated pre-existing errors beyond the group-members.tsx issue fixed in PR #74 JointSave-org/Joint_Save#75) comprehensively addresses all 4 TypeScript errors mentioned in the original issue, including the 4th error that was already partially fixed in PR feat(dashboard): enhance my-groups component with live pool data and … JointSave-org/Joint_Save#74

Technical Constraints

All fixes:

• ✅ Work with the existing @stellar/stellar-sdk version 15.0.1
• ✅ Maintain backward compatibility with existing code
• ✅ Follow existing code patterns and conventions
• ✅ Are minimal and targeted - only the necessary changes were made