diff --git a/package.json b/package.json
index a664e88..3be157d 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,9 @@
   "license": "ISC",
   "dependencies": {
     "@edgeware/node-types": "^3.1.0-beta.3",
+    "@ethersproject/contracts": "^5.3.0",
+    "@ethersproject/providers": "^5.3.0",
+    "@ethersproject/solidity": "^5.3.0",
     "@openzeppelin/contracts": "^2.5.0",
     "@polkadot/api": "2.10.2-11",
     "@polkadot/keyring": "^4.2.2-11",
@@ -24,6 +27,7 @@
     "@truffle/hdwallet-provider": "^1.2.0",
     "@types/chai": "^4.2.12",
     "@types/mocha": "^8.0.3",
+    "@uniswap/sdk": "^3.0.3",
     "@uniswap/v2-core": "^1.0.1",
     "@uniswap/v2-periphery": "^1.1.0-beta.0",
     "bn.js": "^5.1.3",
diff --git a/utils.js b/utils.js
index 743a510..11adacb 100644
--- a/utils.js
+++ b/utils.js
@@ -8,6 +8,7 @@ const account = '0x19e7e376e7c213b7e7e7e46cc70a5dd086daff2a';
 const privKey = '1111111111111111111111111111111111111111111111111111111111111111';
 
 const initWeb3 = (pkey = privKey) => {
+  console.log('Initializing web3 provider at http://localhost:9933/');
   // const provider = new Web3.providers.HttpProvider('http://localhost:9933/');
   const provider = new HDWalletProvider({
     privateKeys: [ pkey ],
diff --git a/web3tests/addLiquidity.js b/web3tests/addLiquidity.js
index a375e5b..02e74a5 100644
--- a/web3tests/addLiquidity.js
+++ b/web3tests/addLiquidity.js
@@ -1,3 +1,4 @@
+
 const contract = require("@truffle/contract");
 const { assert } = require("chai");
 const { account, initWeb3 } = require('../utils');
@@ -5,6 +6,7 @@ const { deploy } = require('../deploy');
 
 const TokenA = require('../build/contracts/TokenA.json');
 const TokenB = require('../build/contracts/TokenB.json');
+
 const UniswapV2Router02 = require('../node_modules/@uniswap/v2-periphery/build/UniswapV2Router02.json');
 const UniswapV2Factory = require('../node_modules/@uniswap/v2-core/build/UniswapV2Factory.json');
 const UniswapV2Pair = require('../node_modules/@uniswap/v2-core/build/UniswapV2Pair.json');
@@ -18,12 +20,12 @@ describe('Add Liquidity Test', () => {
       [FACTORY_ADDRESS, ROUTER_ADDRESS] = d;
     });
 
-   it('should create uniswap pair', async () => {   
+   it('should create uniswap pair', async () => {
       // deploy two tokens
       const web3 = initWeb3();
       const amount0 = web3.utils.toWei('10');
       const amount1 = web3.utils.toWei('10');
-   
+
       console.log('Deploying first token...');
       const TokenAContract = contract({
          abi: TokenA.abi,
@@ -50,7 +52,7 @@ describe('Add Liquidity Test', () => {
       const receipt1 = await token1.approve(ROUTER_ADDRESS, amount1, {
          from: account
       });
-   
+
       // create the pair
       const RouterContract = contract({
          abi: UniswapV2Router02.abi,
@@ -64,11 +66,12 @@ describe('Add Liquidity Test', () => {
          "0", "0",
          account,
          Math.ceil(Date.now() / 1000) + (60 * 20), // 1 day
-         { from: account, gas: web3.utils.toWei('100') }, // { from: account, gasLimit: 10000000, gasPrice: 1500000000 },
+        // { from: account, gas: web3.utils.toWei('100') },
+        { from: account, gasLimit: 10000000, gasPrice: 1500000000 },
       ];
       console.log('Adding liquidity with args: ', args);
       const liquidityReceipt = await router.addLiquidity(...args);
-      
+
       // query the pair
       const FactoryContract = contract({
          abi: UniswapV2Factory.abi,
@@ -80,13 +83,12 @@ describe('Add Liquidity Test', () => {
       const pairAddress = await factory.getPair.call(address0, address1, {
          from: account,
       });
-      console.log(pairAddress);
       const nPairs = await factory.allPairsLength.call({ from: account });
-   
+
       // query the pair's reserves
+      console.log(`Got pair: ${pairAddress} (${nPairs} total pairs).`);
       assert.notEqual(+nPairs, 0);
       assert.notEqual(+(pairAddress.slice(2)), 0);
-      console.log(`Got pair: ${pairAddress} (${nPairs} total pairs).`);
       const PairContract = contract({
          abi: UniswapV2Pair.abi,
          unlinked_binary: UniswapV2Pair.bytecode,
@@ -94,14 +96,30 @@ describe('Add Liquidity Test', () => {
       PairContract.setProvider(web3.currentProvider);
       const pair = await PairContract.at(pairAddress);
       const result = await pair.getReserves.call({ from: account });
-      console.log(result);
-      console.log('result[0].toString()');
-      console.log(result[0].toString());
-      console.log(amount0);
-      console.log('result[1].toString()');
-      console.log(result[1].toString());
-      console.log(amount1);
-      assert.equal(result[0].toString(), amount0);
-      assert.equal(result[1].toString(), amount1);
+      assert(result[0].toString() === amount0);
+      assert(result[1].toString() === amount1);
+      console.log('Deposited token0 in LP pool:', web3.utils.fromWei(amount0));
+      console.log('Deposited token1 in LP pool:', web3.utils.fromWei(amount1));
+
+      // approve swap
+      const amountIn = web3.utils.toWei('5');
+      const amountOutMin = web3.utils.toWei('1');
+      console.log('Approving token for swap...');
+      const swapApproveReceipt = await token0.approve(ROUTER_ADDRESS, amountIn, {
+         from: account
+      });
+
+      // swap
+      console.log('Swapping', amountIn, 'token0 for at least', amountOutMin, 'token1');
+      const deadline = (await web3.eth.getBlock('latest')).timestamp + 1000;
+      const swapReceipt = await router.swapExactTokensForTokens(
+        amountIn,
+        amountOutMin,
+        [ token0.address, token1.address ],
+        account,
+        deadline,
+        { from: account, gasLimit: 10000000, gasPrice: 1500000000 },
+      );
+      console.log('Done!', swapReceipt);
    });
 });
diff --git a/yarn.lock b/yarn.lock
index 70c4dde..8a99fae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -72,6 +72,45 @@
     "@ethersproject/properties" ">=5.0.0-beta.131"
     "@ethersproject/strings" ">=5.0.0-beta.130"
 
+"@ethersproject/abi@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.3.0.tgz#00f0647d906edcd32c50b16ab9c98f83e208dcf1"
+  integrity sha512-NaT4UacjOwca8qCG/gv8k+DgTcWu49xlrvdhr/p8PTFnoS8e3aMWqjI3znFME5Txa/QWXDrg2/heufIUue9rtw==
+  dependencies:
+    "@ethersproject/address" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/constants" "^5.3.0"
+    "@ethersproject/hash" "^5.3.0"
+    "@ethersproject/keccak256" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/strings" "^5.3.0"
+
+"@ethersproject/abstract-provider@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.3.0.tgz#f4c0ae4a4cef9f204d7781de805fd44b72756c81"
+  integrity sha512-1+MLhGP1GwxBDBNwMWVmhCsvKwh4gK7oIfOrmlmePNeskg1NhIrYssraJBieaFNHUYfKEd/1DjiVZMw8Qu5Cxw==
+  dependencies:
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/networks" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/transactions" "^5.3.0"
+    "@ethersproject/web" "^5.3.0"
+
+"@ethersproject/abstract-signer@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.3.0.tgz#05172b653e15b535ed5854ef5f6a72f4b441052d"
+  integrity sha512-w8IFwOYqiPrtvosPuArZ3+QPR2nmdVTRrVY8uJYL3NNfMmQfTy3V3l2wbzX47UUlNbPJY+gKvzJAyvK1onZxJg==
+  dependencies:
+    "@ethersproject/abstract-provider" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+
 "@ethersproject/address@>=5.0.0-beta.128", "@ethersproject/address@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.0.2.tgz#80d0ddfb7d4bd0d32657747fa4bdd2defef2e00a"
@@ -84,6 +123,32 @@
     "@ethersproject/rlp" "^5.0.0"
     bn.js "^4.4.0"
 
+"@ethersproject/address@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.3.0.tgz#e53b69eacebf332e8175de814c5e6507d6932518"
+  integrity sha512-29TgjzEBK+gUEUAOfWCG7s9IxLNLCqvr+oDSk6L9TXD0VLvZJKhJV479tKQqheVA81OeGxfpdxYtUVH8hqlCvA==
+  dependencies:
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/keccak256" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/rlp" "^5.3.0"
+
+"@ethersproject/base64@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.3.0.tgz#b831fb35418b42ad24d943c557259062b8640824"
+  integrity sha512-JIqgtOmgKcbc2sjGWTXyXktqUhvFUDte8fPVsAaOrcPiJf6YotNF+nsrOYGC9pbHBEGSuSBp3QR0varkO8JHEw==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+
+"@ethersproject/basex@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/basex/-/basex-5.3.0.tgz#02dea3ab8559ae625c6d548bc11773432255c916"
+  integrity sha512-8J4nS6t/SOnoCgr3DF5WCSRLC5YwTKYpZWJqeyYQLX+86TwPhtzvHXacODzcDII9tWKhVg6g0Bka8JCBWXsCiQ==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+
 "@ethersproject/bignumber@>=5.0.0-beta.130", "@ethersproject/bignumber@^5.0.0":
   version "5.0.5"
   resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.0.5.tgz#31bd7e75aad46ace345fae69b1f5bb120906af1b"
@@ -93,6 +158,15 @@
     "@ethersproject/logger" "^5.0.0"
     bn.js "^4.4.0"
 
+"@ethersproject/bignumber@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.3.0.tgz#74ab2ec9c3bda4e344920565720a6ee9c794e9db"
+  integrity sha512-5xguJ+Q1/zRMgHgDCaqAexx/8DwDVLRemw2i6uR8KyGjwGdXI8f32QZZ1cKGucBN6ekJvpUpHy6XAuQnTv0mPA==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    bn.js "^4.11.9"
+
 "@ethersproject/bytes@>=5.0.0-beta.129", "@ethersproject/bytes@^5.0.0":
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.0.3.tgz#b3769963ae0188a35713d343890a903bda20af9c"
@@ -100,6 +174,13 @@
   dependencies:
     "@ethersproject/logger" "^5.0.0"
 
+"@ethersproject/bytes@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.3.0.tgz#473e0da7f831d535b2002be05e6f4ca3729a1bc9"
+  integrity sha512-rqLJjdVqCcn7glPer7Fxh87PRqlnRScVAoxcIP3PmOUNApMWJ6yRdOFfo2KvPAdO7Le3yEI1o0YW+Yvr7XCYvw==
+  dependencies:
+    "@ethersproject/logger" "^5.3.0"
+
 "@ethersproject/constants@>=5.0.0-beta.128", "@ethersproject/constants@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.0.2.tgz#f7ac0b320e2bbec1a5950da075015f8bc4e8fed1"
@@ -107,6 +188,29 @@
   dependencies:
     "@ethersproject/bignumber" "^5.0.0"
 
+"@ethersproject/constants@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.3.0.tgz#a5d6d86c0eec2c64c3024479609493b9afb3fc77"
+  integrity sha512-4y1feNOwEpgjAfiCFWOHznvv6qUF/H6uI0UKp8xdhftb+H+FbKflXg1pOgH5qs4Sr7EYBL+zPyPb+YD5g1aEyw==
+  dependencies:
+    "@ethersproject/bignumber" "^5.3.0"
+
+"@ethersproject/contracts@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/contracts/-/contracts-5.3.0.tgz#ad699a3abaae30bfb6422cf31813a663b2d4099c"
+  integrity sha512-eDyQ8ltykvyQqnGZxb/c1e0OnEtzqXhNNC4BX8nhYBCaoBrYYuK/1fLmyEvc5+XUMoxNhwpYkoSSwvPLci7/Zg==
+  dependencies:
+    "@ethersproject/abi" "^5.3.0"
+    "@ethersproject/abstract-provider" "^5.3.0"
+    "@ethersproject/abstract-signer" "^5.3.0"
+    "@ethersproject/address" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/constants" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/transactions" "^5.3.0"
+
 "@ethersproject/hash@>=5.0.0-beta.128":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.0.2.tgz#6d69558786961836d530b8b4a8714eac5388aec7"
@@ -117,6 +221,20 @@
     "@ethersproject/logger" "^5.0.0"
     "@ethersproject/strings" "^5.0.0"
 
+"@ethersproject/hash@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.3.0.tgz#f65e3bf3db3282df4da676db6cfa049535dd3643"
+  integrity sha512-gAFZSjUPQ32CIfoKSMtMEQ+IO0kQxqhwz9fCIFt2DtAq2u4pWt8mL9Z5P0r6KkLcQU8LE9FmuPPyd+JvBzmr1w==
+  dependencies:
+    "@ethersproject/abstract-signer" "^5.3.0"
+    "@ethersproject/address" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/keccak256" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/strings" "^5.3.0"
+
 "@ethersproject/keccak256@>=5.0.0-beta.127", "@ethersproject/keccak256@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.0.2.tgz#7ed4a95bb45ee502cf4532223833740a83602797"
@@ -125,11 +243,31 @@
     "@ethersproject/bytes" "^5.0.0"
     js-sha3 "0.5.7"
 
+"@ethersproject/keccak256@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.3.0.tgz#fb5cd36bdfd6fa02e2ea84964078a9fc6bd731be"
+  integrity sha512-Gv2YqgIUmRbYVNIibafT0qGaeGYLIA/EdWHJ7JcVxVSs2vyxafGxOJ5VpSBHWeOIsE6OOaCelYowhuuTicgdFQ==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    js-sha3 "0.5.7"
+
 "@ethersproject/logger@>=5.0.0-beta.129", "@ethersproject/logger@^5.0.0":
   version "5.0.4"
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.0.4.tgz#09fa4765b5691233e3afb6617cb38a700f9dd2e4"
   integrity sha512-alA2LiAy1LdQ/L1SA9ajUC7MvGAEQLsICEfKK4erX5qhkXE1LwLSPIzobtOWFsMHf2yrXGKBLnnpuVHprI3sAw==
 
+"@ethersproject/logger@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.3.0.tgz#7a69fa1d4ca0d4b7138da1627eb152f763d84dd0"
+  integrity sha512-8bwJ2gxJGkZZnpQSq5uSiZSJjyVTWmlGft4oH8vxHdvO1Asy4TwVepAhPgxIQIMxXZFUNMych1YjIV4oQ4I7dA==
+
+"@ethersproject/networks@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.3.0.tgz#d8ad06eb107c69fb8651f4c81ddd0e88944fdfea"
+  integrity sha512-XGbD9MMgqrR7SYz8o6xVgdG+25v7YT5vQG8ZdlcLj2I7elOBM7VNeQrnxfSN7rWQNcqu2z80OM29gGbQz+4Low==
+  dependencies:
+    "@ethersproject/logger" "^5.3.0"
+
 "@ethersproject/properties@>=5.0.0-beta.131", "@ethersproject/properties@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.0.2.tgz#2facb62d2f2d968c7b3d0befa5bcc884cc565d3b"
@@ -137,6 +275,46 @@
   dependencies:
     "@ethersproject/logger" "^5.0.0"
 
+"@ethersproject/properties@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.3.0.tgz#feef4c4babeb7c10a6b3449575016f4ad2c092b2"
+  integrity sha512-PaHxJyM5/bfusk6vr3yP//JMnm4UEojpzuWGTmtL5X4uNhNnFNvlYilZLyDr4I9cTkIbipCMsAuIcXWsmdRnEw==
+  dependencies:
+    "@ethersproject/logger" "^5.3.0"
+
+"@ethersproject/providers@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/providers/-/providers-5.3.0.tgz#bccb49f1073a7d56e24f49abb14bb281c9b08636"
+  integrity sha512-HtL+DEbzPcRyfrkrMay7Rk/4he+NbUpzI/wHXP4Cqtra82nQOnqqCgTQc4HbdDrl75WVxG/JRMFhyneIPIMZaA==
+  dependencies:
+    "@ethersproject/abstract-provider" "^5.3.0"
+    "@ethersproject/abstract-signer" "^5.3.0"
+    "@ethersproject/address" "^5.3.0"
+    "@ethersproject/basex" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/constants" "^5.3.0"
+    "@ethersproject/hash" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/networks" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/random" "^5.3.0"
+    "@ethersproject/rlp" "^5.3.0"
+    "@ethersproject/sha2" "^5.3.0"
+    "@ethersproject/strings" "^5.3.0"
+    "@ethersproject/transactions" "^5.3.0"
+    "@ethersproject/web" "^5.3.0"
+    bech32 "1.1.4"
+    ws "7.4.6"
+
+"@ethersproject/random@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/random/-/random-5.3.0.tgz#7c46bf36e50cb0d0550bc8c666af8e1d4496dc1a"
+  integrity sha512-A5SL/4inutSwt3Fh2OD0x2gz+x6GHmuUnIPkR7zAiTidMD2N8F6tZdMF1hlQKWVCcVMWhEQg8mWijhEzm6BBYw==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+
 "@ethersproject/rlp@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/rlp/-/rlp-5.0.2.tgz#d6b550a2ac5e484f15f0f63337e522004d2e78cd"
@@ -145,6 +323,23 @@
     "@ethersproject/bytes" "^5.0.0"
     "@ethersproject/logger" "^5.0.0"
 
+"@ethersproject/rlp@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/rlp/-/rlp-5.3.0.tgz#7cb93a7b5dfa69163894153c9d4b0d936f333188"
+  integrity sha512-oI0joYpsRanl9guDubaW+1NbcpK0vJ3F/6Wpcanzcnqq+oaW9O5E98liwkEDPcb16BUTLIJ+ZF8GPIHYxJ/5Pw==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+
+"@ethersproject/sha2@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/sha2/-/sha2-5.3.0.tgz#209f9a1649f7d2452dcd5e5b94af43b7f3f42366"
+  integrity sha512-r5ftlwKcocYEuFz2JbeKOT5SAsCV4m1RJDsTOEfQ5L67ZC7NFDK5i7maPdn1bx4nPhylF9VAwxSrQ1esmwzylg==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    hash.js "1.1.7"
+
 "@ethersproject/signing-key@^5.0.0":
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/@ethersproject/signing-key/-/signing-key-5.0.3.tgz#adb84360e147bfd336cb2fe114100120732dc10a"
@@ -155,6 +350,29 @@
     "@ethersproject/properties" "^5.0.0"
     elliptic "6.5.3"
 
+"@ethersproject/signing-key@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/signing-key/-/signing-key-5.3.0.tgz#a96c88f8173e1abedfa35de32d3e5db7c48e5259"
+  integrity sha512-+DX/GwHAd0ok1bgedV1cKO0zfK7P/9aEyNoaYiRsGHpCecN7mhLqcdoUiUzE7Uz86LBsxm5ssK0qA1kBB47fbQ==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    bn.js "^4.11.9"
+    elliptic "6.5.4"
+    hash.js "1.1.7"
+
+"@ethersproject/solidity@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/solidity/-/solidity-5.3.0.tgz#2a0b00b4aaaef99a080ddea13acab1fa35cd4a93"
+  integrity sha512-uLRBaNUiISHbut94XKewJgQh6UmydWTBp71I7I21pkjVXfZO2dJ5EOo3jCnumJc01M4LOm79dlNNmF3oGIvweQ==
+  dependencies:
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/keccak256" "^5.3.0"
+    "@ethersproject/sha2" "^5.3.0"
+    "@ethersproject/strings" "^5.3.0"
+
 "@ethersproject/strings@>=5.0.0-beta.130", "@ethersproject/strings@^5.0.0":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.0.2.tgz#1753408c3c889813fd0992abd76393e3e47a2619"
@@ -164,6 +382,15 @@
     "@ethersproject/constants" "^5.0.0"
     "@ethersproject/logger" "^5.0.0"
 
+"@ethersproject/strings@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.3.0.tgz#a6b640aab56a18e0909f657da798eef890968ff0"
+  integrity sha512-j/AzIGZ503cvhuF2ldRSjB0BrKzpsBMtCieDtn4TYMMZMQ9zScJn9wLzTQl/bRNvJbBE6TOspK0r8/Ngae/f2Q==
+  dependencies:
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/constants" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+
 "@ethersproject/transactions@^5.0.0-beta.135":
   version "5.0.2"
   resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.0.2.tgz#590ede71fc87b45be7bd46002e18ae52246a2347"
@@ -179,6 +406,32 @@
     "@ethersproject/rlp" "^5.0.0"
     "@ethersproject/signing-key" "^5.0.0"
 
+"@ethersproject/transactions@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.3.0.tgz#49b86f2bafa4d0bdf8e596578fc795ee47c50458"
+  integrity sha512-cdfK8VVyW2oEBCXhURG0WQ6AICL/r6Gmjh0e4Bvbv6MCn/GBd8FeBH3rtl7ho+AW50csMKeGv3m3K1HSHB2jMQ==
+  dependencies:
+    "@ethersproject/address" "^5.3.0"
+    "@ethersproject/bignumber" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/constants" "^5.3.0"
+    "@ethersproject/keccak256" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/rlp" "^5.3.0"
+    "@ethersproject/signing-key" "^5.3.0"
+
+"@ethersproject/web@^5.3.0":
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/web/-/web-5.3.0.tgz#7959c403f6476c61515008d8f92da51c553a8ee1"
+  integrity sha512-Ni6/DHnY6k/TD41LEkv0RQDx4jqWz5e/RZvrSecsxGYycF+MFy2z++T/yGc2peRunLOTIFwEksgEGGlbwfYmhQ==
+  dependencies:
+    "@ethersproject/base64" "^5.3.0"
+    "@ethersproject/bytes" "^5.3.0"
+    "@ethersproject/logger" "^5.3.0"
+    "@ethersproject/properties" "^5.3.0"
+    "@ethersproject/strings" "^5.3.0"
+
 "@openzeppelin/contracts@^2.5.0":
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-2.5.1.tgz#c76e3fc57aa224da3718ec351812a4251289db31"
@@ -689,12 +942,25 @@
   resolved "https://registry.yarnpkg.com/@uniswap/lib/-/lib-1.1.1.tgz#0afd29601846c16e5d082866cbb24a9e0758e6bc"
   integrity sha512-2yK7sLpKIT91TiS5sewHtOa7YuM8IuBXVl4GZv2jZFys4D2sY7K5vZh6MqD25TPA95Od+0YzCVq6cTF2IKrOmg==
 
+"@uniswap/sdk@^3.0.3":
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/@uniswap/sdk/-/sdk-3.0.3.tgz#8201c7c72215d0030cb99acc7e661eff895c18a9"
+  integrity sha512-t4s8bvzaCFSiqD2qfXIm3rWhbdnXp+QjD3/mRaeVDHK7zWevs6RGEb1ohMiNgOCTZANvBayb4j8p+XFdnMBadQ==
+  dependencies:
+    "@uniswap/v2-core" "^1.0.0"
+    big.js "^5.2.2"
+    decimal.js-light "^2.5.0"
+    jsbi "^3.1.1"
+    tiny-invariant "^1.1.0"
+    tiny-warning "^1.0.3"
+    toformat "^2.0.0"
+
 "@uniswap/v2-core@1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@uniswap/v2-core/-/v2-core-1.0.0.tgz#e0fab91a7d53e8cafb5326ae4ca18351116b0844"
   integrity sha512-BJiXrBGnN8mti7saW49MXwxDBRFiWemGetE58q8zgfnPPzQKq55ADltEILqOt6VFZ22kVeVKbF8gVd8aY3l7pA==
 
-"@uniswap/v2-core@^1.0.1":
+"@uniswap/v2-core@^1.0.0", "@uniswap/v2-core@^1.0.1":
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/@uniswap/v2-core/-/v2-core-1.0.1.tgz#af8f508bf183204779938969e2e54043e147d425"
   integrity sha512-MtybtkUPSyysqLY2U210NBDeCHX+ltHt3oADGdjqoThZaFRDKwM6k1Nb3F0A3hk5hwuQvytFWhrWHOEq6nVJ8Q==
@@ -957,6 +1223,11 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
+bech32@1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/bech32/-/bech32-1.1.4.tgz#e38c9f37bf179b8eb16ae3a772b40c356d4832e9"
+  integrity sha512-s0IrSOzLlbvX7yp4WBfPITzpAU8sqQcpsmwXDiKwrG4r491vwCO/XpejasRNl0piBMe/DvP4Tz0mIS/X1DPJBQ==
+
 big.js@^5.2.2:
   version "5.2.2"
   resolved "https://registry.yarnpkg.com/big.js/-/big.js-5.2.2.tgz#65f0af382f578bcdc742bd9c281e9cb2d7768328"
@@ -1075,7 +1346,7 @@ braces@~3.0.2:
   dependencies:
     fill-range "^7.0.1"
 
-brorand@^1.0.1:
+brorand@^1.0.1, brorand@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
   integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
@@ -1613,6 +1884,11 @@ decamelize@^4.0.0:
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-4.0.0.tgz#aa472d7bf660eb15f3494efd531cab7f2a709837"
   integrity sha512-9iE1PgSik9HeIIw2JO94IidnE3eBoQrFJ3w7sFuzSX4DpmZ3v5sZpUiV5Swcf6mQEF+Y0ru8Neo+p+nyh2J+hQ==
 
+decimal.js-light@^2.5.0:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/decimal.js-light/-/decimal.js-light-2.5.1.tgz#134fd32508f19e208f4fb2f8dac0d2626a867934"
+  integrity sha512-qIMFpTMZmny+MMIitAB6D7iVPEorVw6YQRWkvarTkT4tBeSLLiHzcwj6q0MmYSFCiVpiqPJTJEYIrpcPzVEIvg==
+
 decode-uri-component@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
@@ -1851,6 +2127,19 @@ elliptic@6.5.3, elliptic@^6.4.0, elliptic@^6.5.2, elliptic@^6.5.3:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
+elliptic@6.5.4:
+  version "6.5.4"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.4.tgz#da37cebd31e79a1367e941b592ed1fbebd58abbb"
+  integrity sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==
+  dependencies:
+    bn.js "^4.11.9"
+    brorand "^1.1.0"
+    hash.js "^1.0.0"
+    hmac-drbg "^1.0.1"
+    inherits "^2.0.4"
+    minimalistic-assert "^1.0.1"
+    minimalistic-crypto-utils "^1.0.1"
+
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -2832,7 +3121,7 @@ hash.js@1.1.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.0"
 
-hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.7:
+hash.js@1.1.7, hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
   integrity sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==
@@ -2855,7 +3144,7 @@ highlightjs-solidity@^1.0.18:
   resolved "https://registry.yarnpkg.com/highlightjs-solidity/-/highlightjs-solidity-1.0.18.tgz#3deb0593689a26fbadf98e631bf2cd305a6417c9"
   integrity sha512-k15h0br4oCRT0F0jTRuZbimerVt5V4n0k25h7oWi0kVqlBNeXPbSr5ddw02/2ukJmYfB8jauFDmxSauJjwM7Eg==
 
-hmac-drbg@^1.0.0:
+hmac-drbg@^1.0.0, hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
   integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
@@ -3214,6 +3503,11 @@ js-yaml@3.14.0:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+jsbi@^3.1.1:
+  version "3.1.4"
+  resolved "https://registry.yarnpkg.com/jsbi/-/jsbi-3.1.4.tgz#9654dd02207a66a4911b4e4bb74265bc2cbc9dd0"
+  integrity sha512-52QRRFSsi9impURE8ZUbzAMCLjPm4THO7H2fcuIvaaeFTbSysvkodbQQXIVsNgq/ypDbq6dJiuGKL0vZ/i9hUg==
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -4814,6 +5108,16 @@ timers-ext@^0.1.5:
     es5-ext "~0.10.46"
     next-tick "1"
 
+tiny-invariant@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/tiny-invariant/-/tiny-invariant-1.1.0.tgz#634c5f8efdc27714b7f386c35e6760991d230875"
+  integrity sha512-ytxQvrb1cPc9WBEI/HSeYYoGD0kWnGEOR8RY6KomWLBVhqz0RgTwVO9dLrGz7dC+nN9llyI7OKAgRq8Vq4ZBSw==
+
+tiny-warning@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/tiny-warning/-/tiny-warning-1.0.3.tgz#94a30db453df4c643d0fd566060d60a875d84754"
+  integrity sha512-lBN9zLN/oAf68o3zNXYrdCt1kP8WsiGW8Oo2ka41b2IM5JL/S1CTyX1rW0mb/zSuJun0ZUrDxx4sqvYS2FWzPA==
+
 to-buffer@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/to-buffer/-/to-buffer-1.1.1.tgz#493bd48f62d7c43fcded313a03dcadb2e1213a80"
@@ -4836,6 +5140,11 @@ to-regex-range@^5.0.1:
   dependencies:
     is-number "^7.0.0"
 
+toformat@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/toformat/-/toformat-2.0.0.tgz#7a043fd2dfbe9021a4e36e508835ba32056739d8"
+  integrity sha512-03SWBVop6nU8bpyZCx7SodpYznbZF5R4ljwNLBcTQzKOD9xuihRo/psX58llS1BMFhhAI08H3luot5GoXJz2pQ==
+
 toidentifier@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
@@ -5930,6 +6239,11 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
+ws@7.4.6:
+  version "7.4.6"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
+  integrity sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==
+
 ws@^3.0.0:
   version "3.3.3"
   resolved "https://registry.yarnpkg.com/ws/-/ws-3.3.3.tgz#f1cf84fe2d5e901ebce94efaece785f187a228f2"