fix(world): dedupe functions in getWorldAbi result

packages/world/ts/deduplicateAbi.ts

@@ -0,0 +1,24 @@
+import { Abi, AbiItem } from "viem";
+
+function hasNamedInputs(entry: AbiItem) {
+  if (!("inputs" in entry) || !entry.inputs || !entry.inputs.length) {
+    return false;
+  }
+  return entry.inputs.some((input) => input.name);
+}
+
+// during deduplication, favor ABI items with named inputs
+export function deduplicateAbi(abi: Abi) {
+  const uniqueEntries = new Map();
+
+  for (const entry of abi) {
+    const key = "name" in entry ? `${entry.type}_${entry.name}` : entry.type;
+    const existingEntry = uniqueEntries.get(key);
+
+    if (!existingEntry || (hasNamedInputs(entry) && !hasNamedInputs(existingEntry))) {
+      uniqueEntries.set(key, entry);
+    }
+  }
+
+  return Array.from(uniqueEntries.values());
+}

packages/world/ts/getWorldAbi.ts

@@ -2,6 +2,7 @@ import { Client, Abi, Address, getAddress } from "viem";
 import IBaseWorldAbi from "../out/IBaseWorld.sol/IBaseWorld.abi.json";
 import { functionSignatureToAbiItem } from "./functionSignatureToAbiItem";
 import { getFunctions } from "./getFunctions";
+import { deduplicateAbi } from "./deduplicateAbi";
 
 export async function getWorldAbi({
   client,
@@ -21,7 +22,7 @@ export async function getWorldAbi({
     toBlock,
   });
   const worldFunctionsAbi = worldFunctions.map((func) => functionSignatureToAbiItem(func.signature));
-  const abi = [...IBaseWorldAbi, ...worldFunctionsAbi];
+  const abi = deduplicateAbi([...IBaseWorldAbi, ...worldFunctionsAbi]);
 
   return abi;
 }