feat: code optimisation for erc20

Ticket: WIN-7914

Author: ArunBala-Bitgo

modules/bitgo/src/v2/coinFactory.ts

@@ -903,7 +903,14 @@ export function getCoinConstructor(coinName: string): CoinConstructor | undefine
   }
 }
 
+const ethLikeChainToTestnetMap: Record<string, string> = {};
 export function getTokenConstructor(tokenConfig: TokenConfig): CoinConstructor | undefined {
+  if (tokenConfig.coin in ethLikeChainToTestnetMap) {
+    return EthLikeErc20Token.createTokenConstructor(tokenConfig as EthLikeTokenConfig, {
+      Mainnet: tokenConfig.coin,
+      Testnet: ethLikeChainToTestnetMap[tokenConfig.coin],
+    });
+  }
   switch (tokenConfig.coin) {
     case 'eth':
     case 'hteth':

modules/statics/src/tokenConfig.ts

@@ -805,6 +805,25 @@ const getFormattedXdcTokens = (customCoinMap = coins) =>
     return acc;
   }, []);
 
+function getEthLikeTokenConfig(coin: EthLikeERC20Token): EthLikeTokenConfig {
+  return {
+    type: coin.name,
+    coin: coin.network.type === NetworkType.MAINNET ? coin.name : 't'.concat(coin.name),
+    network: coin.network.type === NetworkType.MAINNET ? 'Mainnet' : 'Testnet',
+    name: coin.fullName,
+    tokenContractAddress: coin.contractAddress.toString().toLowerCase(),
+    decimalPlaces: coin.decimalPlaces,
+  };
+}
+
+export const getFormattedEthLikeTokenConfig = (customCoinMap = coins) =>
+  customCoinMap.reduce((acc: EthLikeTokenConfig[], coin) => {
+    if (coin instanceof EthLikeERC20Token) {
+      acc.push(getEthLikeTokenConfig(coin));
+    }
+    return acc;
+  }, []);
+
 function getFlowTokenConfig(coin: EthLikeERC20Token): EthLikeTokenConfig {
   return {
     type: coin.name,