fix: fallback when imToken returns empty accounts

src/wallet/injected.ts

@@ -24,6 +24,13 @@ export type EthereumProvider = {
   }) => Promise<T>;
 };
 
+type LegacyWeb3 = {
+  currentProvider?: EthereumProvider;
+  eth?: {
+    getAccounts?: () => Promise<unknown[]>;
+  };
+};
+
 function isAddress(value: unknown): value is string {
   return typeof value === "string" && /^0x[a-fA-F0-9]{40}$/.test(value);
 }
@@ -74,10 +81,21 @@ async function ensureBnbChain(ethereum: EthereumProvider): Promise<void> {
   }
 }
 
+function selectedInjectedAddress(ethereum: EthereumProvider): string | null {
+  return isAddress(ethereum.selectedAddress) ? ethereum.selectedAddress : null;
+}
+
+async function requestLegacyAccounts(): Promise<unknown[]> {
+  if (typeof window === "undefined") return [];
+  const maybeWindow = window as typeof window & { web3?: LegacyWeb3 };
+  return maybeWindow.web3?.eth?.getAccounts?.().catch(() => []) ?? [];
+}
+
 async function requestInjectedAddress(
   ethereum: EthereumProvider,
 ): Promise<string> {
-  if (isAddress(ethereum.selectedAddress)) return ethereum.selectedAddress;
+  const selectedAddress = selectedInjectedAddress(ethereum);
+  if (selectedAddress) return selectedAddress;
 
   const existingAccounts: unknown[] = await ethereum
     .request<unknown[]>({ method: "eth_accounts" })
@@ -97,7 +115,19 @@ async function requestInjectedAddress(
     });
   const requestedAddress = requestedAccounts.find(isAddress);
   if (requestedAddress) return requestedAddress;
-  if (isAddress(ethereum.selectedAddress)) return ethereum.selectedAddress;
+
+  const enabledAccounts: unknown[] = ethereum.enable
+    ? await ethereum.enable().catch((): unknown[] => [])
+    : [];
+  const enabledAddress = enabledAccounts.find(isAddress);
+  if (enabledAddress) return enabledAddress;
+
+  const legacyAccounts = await requestLegacyAccounts();
+  const legacyAddress = legacyAccounts.find(isAddress);
+  if (legacyAddress) return legacyAddress;
+
+  const latestSelectedAddress = selectedInjectedAddress(ethereum);
+  if (latestSelectedAddress) return latestSelectedAddress;
   throw new Error("walletNoAccount");
 }
 
@@ -105,7 +135,7 @@ export function getInjectedEthereum(): EthereumProvider | null {
   if (typeof window === "undefined") return null;
   const maybeWindow = window as typeof window & {
     ethereum?: EthereumProvider;
-    web3?: { currentProvider?: EthereumProvider };
+    web3?: LegacyWeb3;
   };
   return maybeWindow.ethereum ?? maybeWindow.web3?.currentProvider ?? null;
 }