feat: add support for Polygon (POL) network

src/utils/network/index.ts

@@ -1,6 +1,7 @@
 export const networks = [
   'local',
   'mainnet',
+  'pol',
   'matic',
   'maticmum',
   'amoy',
@@ -17,4 +18,4 @@ export type networkName = (typeof networks)[number];
 
 export type networkType = 'production' | 'test' | 'development';
 
-export type networkCurrency = 'ETH' | 'MATIC' | 'XDC' | 'FREE' | 'ASTRON';
+export type networkCurrency = 'ETH' | 'MATIC' | 'POL' | 'XDC' | 'FREE' | 'ASTRON';

src/utils/supportedChains/index.ts

@@ -6,7 +6,9 @@ import { networkCurrency, networkName, networkType } from './../network';
 export enum CHAIN_ID {
   local = '1337',
   mainnet = '1',
-  matic = '137',
+  pol = '137',
+  // eslint-disable-next-line @typescript-eslint/no-duplicate-enum-values
+  matic = '137', // backward-compat alias for chain 137 (Polygon PoS)
   amoy = '80002',
   sepolia = '11155111',
   xdc = '50',
@@ -58,19 +60,19 @@ export const SUPPORTED_CHAINS: supportedChains = {
     explorerUrl: 'https://etherscan.io',
     rpcUrl: `https://mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`,
   },
-  [CHAIN_ID.matic]: {
-    id: CHAIN_ID.matic,
-    label: 'Polygon',
-    name: 'matic',
+  [CHAIN_ID.pol]: {
+    id: CHAIN_ID.pol,
+    label: 'Polygon (POL)',
+    name: 'pol',
     type: 'production',
-    currency: 'MATIC',
+    currency: 'POL',
     iconImage: iconPolygon,
     explorerUrl: 'https://polygonscan.com',
     rpcUrl: `https://polygon-mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`,
     gasStation: gasStation('https://gasstation.polygon.technology/v2'),
     nativeCurrency: {
-      name: 'MATIC',
-      symbol: 'MATIC',
+      name: 'POL',
+      symbol: 'POL',
       decimals: 18,
     },
   },

src/utils/supportedChains/supportedChains.test.ts

@@ -21,16 +21,31 @@ describe('supportedChains', () => {
     expect(explorerUrl).toBe('https://etherscan.io');
   });
 
-  it('should matic chain info correctly', () => {
+  it('should return pol chain info for CHAIN_ID.pol (Polygon PoS mainnet)', () => {
+    const { id, name, type, currency, explorerUrl } = SUPPORTED_CHAINS[CHAIN_ID.pol];
+
+    expect(id).toBe(CHAIN_ID.pol);
+    expect(name).toBe('pol');
+    expect(type).toBe('production');
+    expect(currency).toBe('POL');
+    expect(explorerUrl).toBe('https://polygonscan.com');
+  });
+
+  it('should return pol chain info when accessing via CHAIN_ID.matic (backward-compat alias for chain 137)', () => {
     const { id, name, type, currency, explorerUrl } = SUPPORTED_CHAINS[CHAIN_ID.matic];
 
-    expect(id).toBe(CHAIN_ID.matic);
-    expect(name).toBe('matic');
+    expect(id).toBe(CHAIN_ID.pol);
+    expect(name).toBe('pol');
     expect(type).toBe('production');
-    expect(currency).toBe('MATIC');
+    expect(currency).toBe('POL');
     expect(explorerUrl).toBe('https://polygonscan.com');
   });
 
+  it('CHAIN_ID.pol and CHAIN_ID.matic should be the same chain ID value', () => {
+    expect(CHAIN_ID.pol).toBe(CHAIN_ID.matic);
+    expect(SUPPORTED_CHAINS[CHAIN_ID.pol]).toBe(SUPPORTED_CHAINS[CHAIN_ID.matic]);
+  });
+
   it('should get polygon amoy chain info correctly', () => {
     const { id, name, type, currency, explorerUrl, rpcUrl } = SUPPORTED_CHAINS[CHAIN_ID.amoy];