feat: ETH2x-FLI to ETH2X pair routing (#1644)

src/constants/routing.ts

 // a list of tokens by chain
 import { Currency, Ether, Token, WETH9 } from '@uniswap/sdk-core'
-import { AMPL, DAI, FEI, FRAX, FXS, MIR, renBTC, TRIBE, UMA, UNI, USDC, USDT, UST, WBTC } from './tokens'
+import { AMPL, DAI, ETH2X_FLI, FEI, FRAX, FXS, MIR, renBTC, TRIBE, UMA, UNI, USDC, USDT, UST, WBTC } from './tokens'
 
 type ChainTokenList = {
   readonly [chainId: number]: Token[]
@@ -45,6 +45,7 @@ export const BASES_TO_CHECK_TRADES_AGAINST: ChainTokenList = {
 export const ADDITIONAL_BASES: { [chainId: number]: { [tokenAddress: string]: Token[] } } = {
   [1]: {
     ...mAssetsAdditionalBases,
+    '0xF16E4d813f4DcfDe4c5b44f305c908742De84eF0': [ETH2X_FLI],
     '0xA948E86885e12Fb09AfEF8C52142EBDbDf73cD18': [UNI[1]],
     '0x561a4717537ff4AF5c687328c0f7E90a319705C0': [UNI[1]],
     '0xa6e3454fec677772dd771788a079355e43910638': [UMA],

src/constants/tokens.ts

@@ -12,6 +12,13 @@ export const FRAX = new Token(1, '0x853d955aCEf822Db058eb8505911ED77F175b99e', 1
 export const FXS = new Token(1, '0x3432B6A60D23Ca0dFCa7761B7ab56459D9C964D0', 18, 'FXS', 'Frax Share')
 export const renBTC = new Token(1, '0xEB4C2781e4ebA804CE9a9803C67d0893436bB27D', 8, 'renBTC', 'renBTC')
 export const UMA = new Token(1, '0x04Fa0d235C4abf4BcF4787aF4CF447DE572eF828', 18, 'UMA', 'UMA Voting Token v1')
+export const ETH2X_FLI = new Token(
+  1,
+  '0xAa6E8127831c9DE45ae56bB1b0d4D4Da6e5665BD',
+  18,
+  'ETH2x-FLI',
+  'ETH 2x Flexible Leverage Index'
+)
 // Mirror Protocol compat.
 export const UST = new Token(1, '0xa47c8bf37f92abed4a126bda807a7b7498661acd', 18, 'UST', 'Wrapped UST')
 export const MIR = new Token(1, '0x09a3ecafa817268f77be1283176b946c4ff2e608', 18, 'MIR', 'Wrapped MIR')