base sdk (#360)

* first pass base

* guess it doesn't exist in ethers despite their docs :()

* address comments

---------

Co-authored-by: Kunal Roy <kunal@alchemyapi.io>

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 ### Major Changes
 
+- Add support for Base 
+
 ### Minor Changes
 
 ## 2.9.2

README.md

@@ -18,6 +18,7 @@ The SDK currently supports the following chains:
 - **Arbitrum**: Mainnet, Goerli, Rinkeby
 - **Astar**: Mainnet
 - **PolygonZKEVM**: Mainnet, Testnet
+- **Base**: Mainnet, Goerli
 
 You can find per-method documentation of the Alchemy SDK endpoints at the [Alchemy Docs linked in the sidebar](https://docs.alchemy.com/reference/alchemy-sdk-quickstart).
 

src/types/types.ts

@@ -95,7 +95,9 @@ export enum Network {
   MATIC_MUMBAI = 'polygon-mumbai',
   ASTAR_MAINNET = 'astar-mainnet',
   POLYGONZKEVM_MAINNET = 'polygonzkevm-mainnet',
-  POLYGONZKEVM_TESTNET = 'polygonzkevm-testnet'
+  POLYGONZKEVM_TESTNET = 'polygonzkevm-testnet',
+  BASE_MAINNET = 'base-mainnet',
+  BASE_GOERLI = 'base-goerli'
 }
 
 /** Token Types for the `getTokenBalances()` endpoint. */

src/util/const.ts

@@ -56,7 +56,9 @@ export const EthersNetwork = {
   [Network.MATIC_MUMBAI]: 'maticmum',
   [Network.ASTAR_MAINNET]: 'astar-mainnet',
   [Network.POLYGONZKEVM_MAINNET]: 'polygonzkevm-mainnet',
-  [Network.POLYGONZKEVM_TESTNET]: 'polygonzkevm-testnet'
+  [Network.POLYGONZKEVM_TESTNET]: 'polygonzkevm-testnet',
+  [Network.BASE_MAINNET]: 'base-mainnet',
+  [Network.BASE_GOERLI]: 'base-goerli'
 };
 
 /**
@@ -84,6 +86,14 @@ export const CustomNetworks: { [key: string]: NetworkFromEthers } = {
   'polygonzkevm-testnet': {
     chainId: 1442,
     name: 'polygonzkevm-testnet'
+  },
+  'base-mainnet': {
+    chainId: 8453,
+    name: 'base-mainnet'
+  },
+  'base-goerli': {
+    chainId: 84531,
+    name: 'base-goerli'
   }
 };