fix: Alchemy support on RSK

lib/Config.ts

@@ -99,8 +99,10 @@ type TokenConfig = {
 };
 
 type EthProviderServiceConfig = {
-  network: string;
-  apiKey: string;
+  network?: string;
+  apiKey?: string;
+
+  endpoint?: string;
 };
 
 type ContractsConfig = {
@@ -112,14 +114,15 @@ type RskConfig = {
   networkName?: string;
   providerEndpoint: string;
 
+  alchemy: EthProviderServiceConfig;
+
   contracts: ContractsConfig[];
 
   tokens: TokenConfig[];
 };
 
 type EthereumConfig = RskConfig & {
   infura: EthProviderServiceConfig;
-  alchemy: EthProviderServiceConfig;
 };
 
 type ApiConfig = {

lib/chain/ElementsWrapper.ts

@@ -47,7 +47,7 @@ class ElementsWrapper
       );
     }
 
-    this.logger.info(`Using 0-conf check ${this.zeroConfCheck.name}`);
+    this.logger.info(`Using 0-conf check: ${this.zeroConfCheck.name}`);
   }
 
   public serviceName = () => 'ElementsWrapper';

lib/wallet/ethereum/InjectedProvider.ts

@@ -130,13 +130,13 @@ class InjectedProvider implements Provider {
     name: EthProviderService,
     providerConfig: EthProviderServiceConfig,
   ) => {
-    if (providerConfig === undefined || providerConfig.apiKey === undefined) {
-      this.logDisabledProvider(name, 'no api key was set');
-      return;
-    }
-
-    if (providerConfig.network === undefined) {
-      this.logDisabledProvider(name, 'no network was specified');
+    if (
+      providerConfig === undefined ||
+      (providerConfig.endpoint === undefined &&
+        (providerConfig.network === undefined ||
+          providerConfig.apiKey === undefined))
+    ) {
+      this.logDisabledProvider(name, 'not configured');
       return;
     }
 
@@ -151,7 +151,12 @@ class InjectedProvider implements Provider {
       case EthProviderService.Alchemy:
         this.providers.set(
           name,
-          new AlchemyProvider(providerConfig.network, providerConfig.apiKey),
+          providerConfig.endpoint
+            ? new JsonRpcProvider(providerConfig.endpoint)
+            : new AlchemyProvider(
+                providerConfig.network,
+                providerConfig.apiKey,
+              ),
         );
         break;