chore: add base and basesepolia

Author: einaralex

packages/sdk/src/types.ts

@@ -15,6 +15,7 @@ export type SandboxChain =
   | 'arbitrumsepolia'
   | 'lineasepolia'
   | 'scrollsepolia'
+  | 'basesepolia'
   | 'columbus'
   | 'grand';
 
@@ -25,6 +26,7 @@ export type ProductionChain =
   | 'arbitrum'
   | 'linea'
   | 'scroll'
+  | 'base'
   | 'camino'
   | 'noble';
 
@@ -40,6 +42,8 @@ export type EvmChainId =
   | 501 // camino columbus
   | 137 // polygon
   | 80002 // polygon amoy
+  | 8453 // base
+  | 84532 // base sepolia
   | 42161 // arbitrum
   | 421614 // arbitrum sepolia
   | 59141 // linea sepolia

packages/sdk/src/utils.ts

@@ -64,6 +64,8 @@ const isValidEvmName = (chain: string) => {
   switch (chain) {
     case 'ethereum':
     case 'sepolia':
+    case 'basesepolia':
+    case 'base':
     case 'polygon':
     case 'amoy':
     case 'gnosis':
@@ -239,6 +241,10 @@ export const getChain = (chainId: number): Chain => {
       return 'polygon';
     case 80002:
       return 'amoy';
+    case 8453:
+      return 'base';
+    case 84532:
+      return 'basesepolia';
     case 42161:
       return 'arbitrum';
     case 421614:
@@ -300,6 +306,8 @@ const chainNameBackwardsCompatibility = (
     switch (chain) {
       case 'ethereum':
         return 'sepolia';
+      case 'base':
+        return 'basesepolia';
       case 'polygon':
         return 'amoy';
       case 'gnosis':