(fix) handle no router available on base

src/connectors/uniswap/uniswap.ts

@@ -43,7 +43,7 @@ import { getAddress } from 'ethers/lib/utils';
 export class Uniswap implements Uniswapish {
   private static _instances: { [name: string]: Uniswap };
   private chain: Ethereum | Polygon;
-  private _alphaRouter: AlphaRouter;
+  private _alphaRouter: AlphaRouter | null;
   private _router: string;
   private _routerAbi: ContractInterface;
   private _gasLimitEstimate: number;
@@ -67,10 +67,13 @@ export class Uniswap implements Uniswapish {
     this.chainId = this.chain.chainId;
     this._ttl = UniswapConfig.config.ttl;
     this._maximumHops = UniswapConfig.config.maximumHops;
-    this._alphaRouter = new AlphaRouter({
-      chainId: this.chainId,
-      provider: this.chain.provider,
-    });
+    this._alphaRouter = null;
+    if (this.chainId !== 8453) {
+        this._alphaRouter = new AlphaRouter({
+        chainId: this.chainId,
+        provider: this.chain.provider,
+      });
+    }
     this._routerAbi = routerAbi.abi;
     this._gasLimitEstimate = UniswapConfig.config.gasLimitEstimate;
     this._router = config.uniswapV3SmartOrderRouterAddress(network);
@@ -143,6 +146,9 @@ export class Uniswap implements Uniswapish {
    * AlphaRouter instance.
    */
   public get alphaRouter(): AlphaRouter {
+    if (this._alphaRouter === null) {
+      throw new Error('AlphaRouter is not initialized');
+    }
     return this._alphaRouter;
   }
 
@@ -219,6 +225,9 @@ export class Uniswap implements Uniswapish {
     );
 
     if (this._useRouter) {
+      if (this._alphaRouter === null) {
+        throw new Error('AlphaRouter is not initialized');
+      }
       const route = await this._alphaRouter.route(
         nativeTokenAmount,
         quoteToken,
@@ -299,6 +308,9 @@ export class Uniswap implements Uniswapish {
     );
 
     if (this._useRouter) {
+      if (this._alphaRouter === null) {
+        throw new Error('AlphaRouter is not initialized');
+      }
       const route = await this._alphaRouter.route(
         nativeTokenAmount,
         quoteToken,

src/templates/ethereum.yml

@@ -43,17 +43,9 @@ networks:
     chainID: 8453
     nodeURL:  https://mainnet.base.org
     tokenListType: FILE
-    tokenListSource: /home/gateway/conf/lists/base_tokens_mainnet.json
+    tokenListSource: /home/gateway/conf/lists/base_uniswap_20240411.json
     nativeCurrencySymbol: ETH
     gasPriceRefreshInterval: 60
-  base-sepolia:
-    chainID: 84532
-    nodeURL:  https://sepolia.base.org
-    tokenListType: FILE
-    tokenListSource: /home/gateway/conf/lists/base_tokens_sepolia.json
-    nativeCurrencySymbol: ETH
-    gasPriceRefreshInterval: 60
-
 
 # if you use the gas assumptions below, your wallet needs >0.1 ETH balance for gas
 gasLimitTransaction: 3000000