diff --git a/.gitignore b/.gitignore
index 06def01..7f476ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,9 @@ flattered/
 *.swo
 *.swp
 
+
+node_modules
+
+#Hardhat files
+cache
+artifacts
diff --git a/contracts/SmartRoute/SmartApprove.sol b/contracts/SmartRoute/SmartApprove.sol
new file mode 100644
index 0000000..3b6ccd3
--- /dev/null
+++ b/contracts/SmartRoute/SmartApprove.sol
@@ -0,0 +1,36 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {IERC20} from "../intf/IERC20.sol";
+import {SafeERC20} from "../lib/SafeERC20.sol";
+import {Ownable} from "../lib/Ownable.sol";
+
+
+contract SmartApprove is Ownable {
+    using SafeERC20 for IERC20;
+    address public smartSwap;
+
+    function setSmartSwap(address _smartSwap) external onlyOwner {
+        smartSwap = _smartSwap;
+    }
+
+    
+    event Test1(uint256 amount);
+
+    function claimTokens(
+        IERC20 token,
+        address who,
+        address dest,
+        uint256 amount
+    ) external {
+        require(msg.sender == smartSwap, "Not SmartSwap Address, Access restricted");
+        emit Test1(amount);
+        // token.safeTransferFrom(who, dest, amount);
+    }
+}
diff --git a/contracts/SmartRoute/SmartSwap.sol b/contracts/SmartRoute/SmartSwap.sol
new file mode 100644
index 0000000..0856450
--- /dev/null
+++ b/contracts/SmartRoute/SmartSwap.sol
@@ -0,0 +1,118 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {Ownable} from "../lib/Ownable.sol";
+import {ExternalCall} from "../lib/ExternalCall.sol";
+import {IERC20} from "../intf/IERC20.sol";
+import {UniversalERC20} from "../lib/UniversalERC20.sol";
+import {SafeMath} from "../lib/SafeMath.sol";
+import {DecimalMath} from "../lib/DecimalMath.sol";
+import {ISmartApprove} from "../intf/ISmartApprove.sol";
+
+
+contract SmartSwap is Ownable {
+    using SafeMath for uint256;
+    using UniversalERC20 for IERC20;
+    using ExternalCall for address;
+
+    ISmartApprove public smartApprove;
+
+    IERC20 constant ETH_ADDRESS = IERC20(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
+
+    event Swapped(
+        IERC20 indexed fromToken,
+        IERC20 indexed toToken,
+        address indexed sender,
+        uint256 fromAmount,
+        uint256 toAmount
+    );
+
+    event ExternalRecord(address indexed to, address indexed sender);
+
+    constructor(address _smartApprove) public {
+        smartApprove = ISmartApprove(_smartApprove);
+    }
+
+
+    function dodoSwap(
+        IERC20 fromToken,
+        IERC20 toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        address[] memory callPairs,
+        bytes memory callDataConcat,
+        uint256[] memory starts,
+        uint256[] memory gasLimitsAndValues
+    ) public payable returns (uint256 returnAmount) {
+        require(minReturnAmount > 0, "haha hihi Min return should be bigger then 0.");
+        require(callPairs.length > 0, "pairs should exists.");
+
+        // if (fromToken != ETH_ADDRESS) {
+        //     // smartApprove.claimTokens(fromToken, msg.sender, address(this), fromTokenAmount);
+        // }
+
+        // for (uint256 i = 0; i < callPairs.length; i++) {
+        //     require(callPairs[i] != address(smartApprove), "Access denied");
+        //     require(
+        //         callPairs[i].externalCall(
+        //             gasLimitsAndValues[i] & ((1 << 128) - 1),
+        //             callDataConcat,
+        //             starts[i],
+        //             starts[i + 1] - starts[i],
+        //             gasLimitsAndValues[i] >> 128
+        //         )
+        //     );
+        // }
+
+        // // Return back all unswapped
+        // fromToken.universalTransfer(msg.sender, fromToken.universalBalanceOf(address(this)));
+
+        // returnAmount = toToken.universalBalanceOf(address(this));
+
+        // require(returnAmount >= minReturnAmount, "Return amount is not enough");
+        // toToken.universalTransfer(msg.sender, returnAmount);
+        emit Swapped(fromToken, toToken, msg.sender, fromTokenAmount, fromTokenAmount);
+        // emit Swapped(fromToken, toToken, msg.sender, fromTokenAmount, returnAmount);
+    }
+
+    function externalSwap(
+        IERC20 fromToken,
+        IERC20 toToken,
+        address approveTarget,
+        address to,
+        uint256 gasSwap,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        bytes memory callDataConcat
+    ) public payable returns (uint256 returnAmount) {
+        
+        require(minReturnAmount > 0, "Min return should be bigger then 0.");
+
+        if (fromToken != ETH_ADDRESS) {
+            smartApprove.claimTokens(fromToken, msg.sender, address(this), fromTokenAmount);
+            fromToken.approve(approveTarget, fromTokenAmount);
+        }
+
+        (bool success, ) = to.call{value: msg.value, gas: gasSwap}(callDataConcat);
+
+        require(success, "Contract Swap execution Failed");
+
+        // Return back all unswapped
+        fromToken.universalTransfer(msg.sender, fromToken.universalBalanceOf(address(this)));
+
+        returnAmount = toToken.universalBalanceOf(address(this));
+
+        require(returnAmount >= minReturnAmount, "Return amount is not enough");
+        toToken.universalTransfer(msg.sender, returnAmount);
+
+        emit Swapped(fromToken, toToken, msg.sender, fromTokenAmount, returnAmount);
+
+        emit ExternalRecord(to, msg.sender);
+    }
+}
diff --git a/contracts/intf/ISmartApprove.sol b/contracts/intf/ISmartApprove.sol
new file mode 100644
index 0000000..6ee509f
--- /dev/null
+++ b/contracts/intf/ISmartApprove.sol
@@ -0,0 +1,15 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+import {IERC20} from "./IERC20.sol";
+
+interface ISmartApprove {
+    function claimTokens(IERC20 token,address who,address dest,uint256 amount) external;
+}
\ No newline at end of file
diff --git a/contracts/lib/ExternalCall.sol b/contracts/lib/ExternalCall.sol
new file mode 100644
index 0000000..ce8d0b9
--- /dev/null
+++ b/contracts/lib/ExternalCall.sol
@@ -0,0 +1,34 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+library ExternalCall {
+    // Source: https://github.com/gnosis/MultiSigWallet/blob/master/contracts/MultiSigWallet.sol
+    // call has been separated into its own function in order to take advantage
+    // of the Solidity's code generator to produce a loop that copies tx.data into memory.
+    function externalCall(address destination, uint value, bytes memory data, uint dataOffset, uint dataLength, uint gasLimit) internal returns(bool result) {
+        // solium-disable-next-line security/no-inline-assembly
+        if (gasLimit == 0) {
+            gasLimit = gasleft() - 40000;
+        }
+        assembly {
+            let x := mload(0x40)   // "Allocate" memory for output (0x40 is where "free memory" pointer is stored by convention)
+            let d := add(data, 32) // First 32 bytes are the padded length of data, so exclude that
+            result := call(
+                gasLimit,
+                destination,
+                value,
+                add(d, dataOffset),
+                dataLength,        // Size of the input (in bytes) - this is what fixes the padding problem
+                x,
+                0                  // Output is ignored, therefore the output size is zero
+            )
+        }
+    }
+}
diff --git a/contracts/lib/UniversalERC20.sol b/contracts/lib/UniversalERC20.sol
new file mode 100644
index 0000000..7005a5b
--- /dev/null
+++ b/contracts/lib/UniversalERC20.sol
@@ -0,0 +1,75 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {SafeMath} from "./SafeMath.sol";
+import {IERC20} from "../intf/IERC20.sol";
+import {SafeERC20} from "./SafeERC20.sol";
+
+library UniversalERC20 {
+
+    using SafeMath for uint256;
+    using SafeERC20 for IERC20;
+
+    IERC20 private constant ZERO_ADDRESS = IERC20(0x0000000000000000000000000000000000000000);
+    IERC20 private constant ETH_ADDRESS = IERC20(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
+
+    function universalTransfer(IERC20 token, address to, uint256 amount) internal {
+        universalTransfer(token, to, amount, false);
+    }
+
+    function universalTransfer(IERC20 token, address to, uint256 amount, bool mayFail) internal returns(bool) {
+        if (amount == 0) {
+            return true;
+        }
+
+        if (token == ZERO_ADDRESS || token == ETH_ADDRESS) {
+            if (mayFail) {
+                return address(uint160(to)).send(amount);
+            } else {
+                address(uint160(to)).transfer(amount);
+                return true;
+            }
+        } else {
+            token.safeTransfer(to, amount);
+            return true;
+        }
+    }
+
+    function universalApprove(IERC20 token, address to, uint256 amount) internal {
+        if (token != ZERO_ADDRESS && token != ETH_ADDRESS) {
+            token.safeApprove(to, amount);
+        }
+    }
+
+    function universalTransferFrom(IERC20 token, address from, address to, uint256 amount) internal {
+        if (amount == 0) {
+            return;
+        }
+
+        if (token == ZERO_ADDRESS || token == ETH_ADDRESS) {
+            require(from == msg.sender && msg.value >= amount, "msg.value is zero");
+            if (to != address(this)) {
+                address(uint160(to)).transfer(amount);
+            }
+            if (msg.value > amount) {
+                msg.sender.transfer(msg.value.sub(amount));
+            }
+        } else {
+            token.safeTransferFrom(from, to, amount);
+        }
+    }
+
+    function universalBalanceOf(IERC20 token, address who) internal view returns (uint256) {
+        if (token == ZERO_ADDRESS || token == ETH_ADDRESS) {
+            return who.balance;
+        } else {
+            return token.balanceOf(who);
+        }
+    }
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index bc64a18..e1bfe80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,21 +5,20 @@
   "requires": true,
   "dependencies": {
     "@babel/code-frame": {
-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.1.tgz",
-      "integrity": "sha512-IGhtTmpjGbYzcEDOw7DcQtbQSXcG9ftmAXtWTu9V936vDye4xjjekktFAtgZsWpzTj/X01jocB46mTywm/4SZw==",
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.10.4.tgz",
+      "integrity": "sha512-vG6SvB6oYEhvgisZNFRmRCUkLz11c7rp+tbNTynGqc6mS1d5ATd/sGyV6W0KZZnXRKMTzZDRgQT3Ou9jhpAfUg==",
       "requires": {
-        "@babel/highlight": "^7.10.1"
+        "@babel/highlight": "^7.10.4"
       }
     },
     "@babel/generator": {
-      "version": "7.10.2",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.10.2.tgz",
-      "integrity": "sha512-AxfBNHNu99DTMvlUPlt1h2+Hn7knPpH5ayJ8OqDWSeLld+Fi2AYBTC/IejWDM9Edcii4UzZRCsbUt0WlSDsDsA==",
+      "version": "7.12.5",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.12.5.tgz",
+      "integrity": "sha512-m16TQQJ8hPt7E+OS/XVQg/7U184MLXtvuGbCdA7na61vha+ImkyyNM/9DDA0unYCVZn3ZOhng+qz48/KBOT96A==",
       "requires": {
-        "@babel/types": "^7.10.2",
+        "@babel/types": "^7.12.5",
         "jsesc": "^2.5.1",
-        "lodash": "^4.17.13",
         "source-map": "^0.5.0"
       },
       "dependencies": {
@@ -27,70 +26,34 @@
           "version": "2.5.2",
           "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
           "integrity": "sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA=="
-        },
-        "source-map": {
-          "version": "0.5.7",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
         }
       }
     },
     "@babel/helper-function-name": {
-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.10.1.tgz",
-      "integrity": "sha512-fcpumwhs3YyZ/ttd5Rz0xn0TpIwVkN7X0V38B9TWNfVF42KEkhkAAuPCQ3oXmtTRtiPJrmZ0TrfS0GKF0eMaRQ==",
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.10.4.tgz",
+      "integrity": "sha512-YdaSyz1n8gY44EmN7x44zBn9zQ1Ry2Y+3GTA+3vH6Mizke1Vw0aWDM66FOYEPw8//qKkmqOckrGgTYa+6sceqQ==",
       "requires": {
-        "@babel/helper-get-function-arity": "^7.10.1",
-        "@babel/template": "^7.10.1",
-        "@babel/types": "^7.10.1"
+        "@babel/helper-get-function-arity": "^7.10.4",
+        "@babel/template": "^7.10.4",
+        "@babel/types": "^7.10.4"
       }
     },
     "@babel/helper-get-function-arity": {
-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.10.1.tgz",
-      "integrity": "sha512-F5qdXkYGOQUb0hpRaPoetF9AnsXknKjWMZ+wmsIRsp5ge5sFh4c3h1eH2pRTTuy9KKAA2+TTYomGXAtEL2fQEw==",
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.10.4.tgz",
+      "integrity": "sha512-EkN3YDB+SRDgiIUnNgcmiD361ti+AVbL3f3Henf6dqqUyr5dMsorno0lJWJuLhDhkI5sYEpgj6y9kB8AOU1I2A==",
       "requires": {
-        "@babel/types": "^7.10.1"
+        "@babel/types": "^7.10.4"
       }
     },
     "@babel/helper-module-imports": {
-      "version": "7.10.4",
-      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.10.4.tgz",
-      "integrity": "sha512-nEQJHqYavI217oD9+s5MUBzk6x1IlvoS9WTPfgG43CbMEeStE0v+r+TucWdx8KFGowPGvyOkDT9+7DHedIDnVw==",
+      "version": "7.12.5",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.12.5.tgz",
+      "integrity": "sha512-SR713Ogqg6++uexFRORf/+nPXMmWIn80TALu0uaFb+iQIUoR7bOC7zBWyzBs5b3tBBJXuyD0cRu1F15GyzjOWA==",
       "dev": true,
       "requires": {
-        "@babel/types": "^7.10.4"
-      },
-      "dependencies": {
-        "@babel/helper-validator-identifier": {
-          "version": "7.10.4",
-          "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
-          "integrity": "sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw==",
-          "dev": true
-        },
-        "@babel/types": {
-          "version": "7.11.0",
-          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.11.0.tgz",
-          "integrity": "sha512-O53yME4ZZI0jO1EVGtF1ePGl0LHirG4P1ibcD80XyzZcKhcMFeCXmh4Xb1ifGBIV233Qg12x4rBfQgA+tmOukA==",
-          "dev": true,
-          "requires": {
-            "@babel/helper-validator-identifier": "^7.10.4",
-            "lodash": "^4.17.19",
-            "to-fast-properties": "^2.0.0"
-          }
-        },
-        "lodash": {
-          "version": "4.17.20",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
-          "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
-          "dev": true
-        },
-        "to-fast-properties": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
-          "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
-          "dev": true
-        }
+        "@babel/types": "^7.12.5"
       }
     },
     "@babel/helper-plugin-utils": {
@@ -100,73 +63,82 @@
       "dev": true
     },
     "@babel/helper-split-export-declaration": {
-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.10.1.tgz",
-      "integrity": "sha512-UQ1LVBPrYdbchNhLwj6fetj46BcFwfS4NllJo/1aJsT+1dLTEnXJL0qHqtY7gPzF8S2fXBJamf1biAXV3X077g==",
+      "version": "7.11.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.11.0.tgz",
+      "integrity": "sha512-74Vejvp6mHkGE+m+k5vHY93FX2cAtrw1zXrZXRlG4l410Nm9PxfEiVTn1PjDPV5SnmieiueY4AFg2xqhNFuuZg==",
       "requires": {
-        "@babel/types": "^7.10.1"
+        "@babel/types": "^7.11.0"
       }
     },
     "@babel/helper-validator-identifier": {
-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.1.tgz",
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+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz",
+      "integrity": "sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw=="
     },
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-      "version": "7.10.1",
-      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.10.1.tgz",
-      "integrity": "sha512-8rMof+gVP8mxYZApLF/JgNDAkdKa+aJt3ZYxF8z6+j/hpeXL7iMsKCPHa2jNMHu/qqBwzQF4OHNoYi8dMA/rYg==",
+      "version": "7.10.4",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.10.4.tgz",
+      "integrity": "sha512-i6rgnR/YgPEQzZZnbTHHuZdlE8qyoBNalD6F+q4vAFlcMEcqmkoG+mPqJYJCo63qPf74+Y1UZsl3l6f7/RIkmA==",
       "requires": {
-        "@babel/helper-validator-identifier": "^7.10.1",
+        "@babel/helper-validator-identifier": "^7.10.4",
         "chalk": "^2.0.0",
         "js-tokens": "^4.0.0"
       },
       "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
         "js-tokens": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
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+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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+          "requires": {
+            "has-flag": "^3.0.0"
+          }
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       }
     },
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-      "version": "7.10.2",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.10.2.tgz",
-      "integrity": "sha512-PApSXlNMJyB4JiGVhCOlzKIif+TKFTvu0aQAhnTvfP/z3vVSN6ZypH5bfUNwFXXjRQtUEBNFd2PtmCmG2Py3qQ=="
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-          "dev": true,
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-          }
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-      "dev": true,
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/web3-shh/-/web3-shh-1.2.1.tgz",
+      "integrity": "sha512-/3Cl04nza5kuFn25bV3FJWa0s3Vafr5BlT933h26xovQ6HIIz61LmvNQlvX1AhFL+SNJOTcQmK1SM59vcyC8bA==",
       "requires": {
-        "web3-core": "1.2.2",
-        "web3-core-method": "1.2.2",
-        "web3-core-subscriptions": "1.2.2",
-        "web3-net": "1.2.2"
+        "web3-core": "1.2.1",
+        "web3-core-method": "1.2.1",
+        "web3-core-subscriptions": "1.2.1",
+        "web3-net": "1.2.1"
       }
     },
     "web3-utils": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/web3-utils/-/web3-utils-1.2.2.tgz",
-      "integrity": "sha512-joF+s3243TY5cL7Z7y4h1JsJpUCf/kmFmj+eJar7Y2yNIGVcW961VyrAms75tjUysSuHaUQ3eQXjBEUJueT52A==",
-      "dev": true,
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/web3-utils/-/web3-utils-1.2.1.tgz",
+      "integrity": "sha512-Mrcn3l58L+yCKz3zBryM6JZpNruWuT0OCbag8w+reeNROSGVlXzUQkU+gtAwc9JCZ7tKUyg67+2YUGqUjVcyBA==",
       "requires": {
         "bn.js": "4.11.8",
         "eth-lib": "0.2.7",
-        "ethereum-bloom-filters": "^1.0.6",
         "ethjs-unit": "0.1.6",
         "number-to-bn": "1.7.0",
-        "randombytes": "^2.1.0",
+        "randomhex": "0.1.5",
         "underscore": "1.9.1",
         "utf8": "3.0.0"
       },
@@ -11855,14 +10236,12 @@
         "bn.js": {
           "version": "4.11.8",
           "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.8.tgz",
-          "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA==",
-          "dev": true
+          "integrity": "sha512-ItfYfPLkWHUjckQCk8xC+LwxgK8NYcXywGigJgSwOP8Y2iyWT4f2vsZnoOXTTbo+o5yXmIUJ4gn5538SO5S3gA=="
         },
         "eth-lib": {
           "version": "0.2.7",
           "resolved": "https://registry.npmjs.org/eth-lib/-/eth-lib-0.2.7.tgz",
           "integrity": "sha1-L5Pxex4jrsN1nNSj/iDBKGo/wco=",
-          "dev": true,
           "requires": {
             "bn.js": "^4.11.6",
             "elliptic": "^6.4.0",
@@ -11872,14 +10251,15 @@
       }
     },
     "websocket": {
-      "version": "github:web3-js/WebSocket-Node#ef5ea2f41daf4a2113b80c9223df884b4d56c400",
-      "from": "github:web3-js/WebSocket-Node#polyfill/globalThis",
-      "dev": true,
+      "version": "1.0.32",
+      "resolved": "https://registry.npmjs.org/websocket/-/websocket-1.0.32.tgz",
+      "integrity": "sha512-i4yhcllSP4wrpoPMU2N0TQ/q0O94LRG/eUQjEAamRltjQ1oT1PFFKOG4i877OlJgCG8rw6LrrowJp+TYCEWF7Q==",
       "requires": {
+        "bufferutil": "^4.0.1",
         "debug": "^2.2.0",
         "es5-ext": "^0.10.50",
-        "nan": "^2.14.0",
         "typedarray-to-buffer": "^3.1.5",
+        "utf-8-validate": "^5.0.2",
         "yaeti": "^0.0.6"
       },
       "dependencies": {
@@ -11887,16 +10267,9 @@
           "version": "2.6.9",
           "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "dev": true,
           "requires": {
             "ms": "2.0.0"
           }
-        },
-        "ms": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
-          "dev": true
         }
       }
     },
@@ -11930,6 +10303,26 @@
         "function-bind": "^1.1.1",
         "has-symbols": "^1.0.1",
         "is-typed-array": "^1.1.3"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.7",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.7.tgz",
+          "integrity": "sha512-VBl/gnfcJ7OercKA9MVaegWsBHFjV492syMudcnQZvt/Dw8ezpcOHYZXa/J96O8vx+g4x65YKhxOwDUh63aS5g==",
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.2.2",
+            "is-regex": "^1.1.1",
+            "object-inspect": "^1.8.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.1",
+            "string.prototype.trimend": "^1.0.1",
+            "string.prototype.trimstart": "^1.0.1"
+          }
+        }
       }
     },
     "wide-align": {
@@ -11938,35 +10331,6 @@
       "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
       "requires": {
         "string-width": "^1.0.2 || 2"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
-        },
-        "is-fullwidth-code-point": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
-          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8="
-        },
-        "string-width": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
-          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
-          "requires": {
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^4.0.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
-          "requires": {
-            "ansi-regex": "^3.0.0"
-          }
-        }
       }
     },
     "word-wrap": {
@@ -11996,15 +10360,13 @@
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
           "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
         },
-        "emoji-regex": {
-          "version": "7.0.3",
-          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
-          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA=="
-        },
-        "is-fullwidth-code-point": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
-          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8="
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
         },
         "string-width": {
           "version": "3.1.0",
@@ -12136,16 +10498,6 @@
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
           "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
         },
-        "emoji-regex": {
-          "version": "7.0.3",
-          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
-          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA=="
-        },
-        "is-fullwidth-code-point": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
-          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8="
-        },
         "string-width": {
           "version": "3.1.0",
           "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
diff --git a/test/Route/Route.test.ts b/test/Route/Route.test.ts
new file mode 100644
index 0000000..79f8a23
--- /dev/null
+++ b/test/Route/Route.test.ts
@@ -0,0 +1,171 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+// import * as assert from 'assert';
+
+import BigNumber from 'bignumber.js';
+import { DODOContext, getDODOContext } from '../utils-v1/Context';
+import { decimalStr,MAX_UINT256 } from '../utils-v1/Converter';
+import { logGas } from '../utils-v1/Log';
+
+let lp: string;
+let trader: string;
+
+async function init(ctx: DODOContext): Promise<void> {
+  await ctx.setOraclePrice(decimalStr("100"));
+
+  lp = ctx.spareAccounts[0];
+  trader = ctx.spareAccounts[1];
+  await ctx.approveDODO(lp);
+  await ctx.approveDODO(trader);
+
+  await ctx.mintTestToken(lp, decimalStr("10"), decimalStr("1000"));
+  await ctx.mintTestToken(trader, decimalStr("10"), decimalStr("1000"));
+
+  await ctx.DODO.methods
+    .depositBaseTo(lp, decimalStr("10"))
+    .send(ctx.sendParam(lp));
+  await ctx.DODO.methods
+    .depositQuoteTo(lp, decimalStr("1000"))
+    .send(ctx.sendParam(lp));
+
+}
+
+
+async function calcRoute(ctx: DODOContext) {
+  let fromTokenAmount = decimalStr("1");
+  //路径
+  let routes = [
+    {
+      address: ctx.BASE.options.address,
+      decimals: 18
+    },
+    {
+      address: ctx.QUOTE.options.address,
+      decimals: 18
+    }
+  ]
+  
+  //路径上交易对
+  let pairs = [
+    {
+      pair: ctx.DODO.options.address,
+      base: ctx.BASE.options.address
+    }
+  ]
+  let callPairs: string[] = []
+  let datas: string = ""
+  let starts: number[] = []
+  let gAndV: number[] = []
+  let swapAmount = fromTokenAmount
+  for (let i = 0; i < pairs.length; i++) {
+    let curPair = pairs[i]
+    callPairs.push(curPair.pair)
+    //TODO: hardcode
+    let curContact =ctx.DODO;
+    let curData = ''
+    if (curPair.base === routes[i].address) {
+      curData = await curContact.methods.sellBaseToken(swapAmount, 0, []).encodeABI()
+      swapAmount = await curContact.methods.querySellBaseToken(swapAmount).call();
+    } else {
+      curData = await curContact.methods.buyBaseToken(swapAmount, 0, []).encodABI()
+      swapAmount = await curContact.methods.queryBuyBaseToken(swapAmount).call();
+    }
+    starts.push(datas.length)
+    gAndV.push(0)
+    datas += curData
+  }
+
+  let toAmount  = new BigNumber(swapAmount).multipliedBy(0.99).toFixed(0, BigNumber.ROUND_DOWN)
+
+  return ctx.SmartSwap.methods.dodoSwap(
+    ctx.BASE.options.address,
+    ctx.QUOTE.options.address,
+    fromTokenAmount,
+    toAmount,
+    callPairs,
+    datas,
+    starts,
+    gAndV
+  )
+}
+
+describe("Trader", () => {
+  let snapshotId: string;
+  let ctx: DODOContext;
+
+  before(async () => {
+    ctx = await getDODOContext();
+    await init(ctx);
+  });
+
+  beforeEach(async () => {
+    snapshotId = await ctx.EVM.snapshot();
+  });
+
+  afterEach(async () => {
+    await ctx.EVM.reset(snapshotId);
+  });
+
+  describe("hit currently pair", () => {
+    it("base to quote", async () => {
+      var beforeBalance = await ctx.BASE.methods.balanceOf(trader).call()
+      // await ctx.BASE.methods.approve(ctx.SmartApprove.options.address,MAX_UINT256).send(ctx.sendParam(trader))
+      console.log("beforeBalance",beforeBalance)
+      await logGas(await calcRoute(ctx), ctx.sendParam(trader), "buy token")
+      var afterBalance = await ctx.BASE.methods.balanceOf(trader).call()
+      console.log("afterBalance",afterBalance)
+      // // trader balances
+      // assert.equal(
+      //   await ctx.BASE.methods.balanceOf(trader).call(),
+      //   decimalStr("11")
+      // );
+      // assert.equal(
+      //   await ctx.QUOTE.methods.balanceOf(trader).call(),
+      //   "898581839502056240973"
+      // );
+    });
+  });
+
+
+  // describe("Revert cases", () => {
+  //   it("price limit", async () => {
+  //     await assert.rejects(
+  //       ctx.DODO.methods
+  //         .buyBaseToken(decimalStr("1"), decimalStr("100"), "0x")
+  //         .send(ctx.sendParam(trader)),
+  //       /BUY_BASE_COST_TOO_MUCH/
+  //     );
+  //     await assert.rejects(
+  //       ctx.DODO.methods
+  //         .sellBaseToken(decimalStr("1"), decimalStr("100"), "0x")
+  //         .send(ctx.sendParam(trader)),
+  //       /SELL_BASE_RECEIVE_NOT_ENOUGH/
+  //     );
+  //   });
+
+  //   it("base balance limit", async () => {
+  //     await assert.rejects(
+  //       ctx.DODO.methods
+  //         .buyBaseToken(decimalStr("11"), decimalStr("10000"), "0x")
+  //         .send(ctx.sendParam(trader)),
+  //       /DODO_BASE_BALANCE_NOT_ENOUGH/
+  //     );
+
+  //     await ctx.DODO.methods
+  //       .buyBaseToken(decimalStr("1"), decimalStr("200"), "0x")
+  //       .send(ctx.sendParam(trader));
+
+  //     await assert.rejects(
+  //       ctx.DODO.methods
+  //         .buyBaseToken(decimalStr("11"), decimalStr("10000"), "0x")
+  //         .send(ctx.sendParam(trader)),
+  //       /DODO_BASE_BALANCE_NOT_ENOUGH/
+  //     );
+  //   });
+  // });
+});
diff --git a/test/utils-v1/Context.ts b/test/utils-v1/Context.ts
new file mode 100644
index 0000000..f00ba44
--- /dev/null
+++ b/test/utils-v1/Context.ts
@@ -0,0 +1,195 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+import BigNumber from 'bignumber.js';
+import Web3 from 'web3';
+import { Contract } from 'web3-eth-contract';
+
+import * as contracts from './Contracts';
+import { decimalStr, gweiStr, MAX_UINT256 } from './Converter';
+import { EVM, getDefaultWeb3 } from './EVM';
+import * as log from './Log';
+
+BigNumber.config({
+  EXPONENTIAL_AT: 1000,
+  DECIMAL_PLACES: 80,
+});
+
+export interface DODOContextInitConfig {
+  lpFeeRate: string;
+  mtFeeRate: string;
+  k: string;
+  gasPriceLimit: string;
+}
+
+/*
+  price curve when k=0.1
+  +──────────────────────+───────────────+
+  | purchase percentage  | avg slippage  |
+  +──────────────────────+───────────────+
+  | 1%                   | 0.1%         |
+  | 5%                   | 0.5%         |
+  | 10%                  | 1.1%         |
+  | 20%                  | 2.5%         |
+  | 50%                  | 10%          |
+  | 70%                  | 23.3%        |
+  +──────────────────────+───────────────+
+*/
+export let DefaultDODOContextInitConfig = {
+  lpFeeRate: decimalStr("0.002"),
+  mtFeeRate: decimalStr("0.001"),
+  k: decimalStr("0.1"),
+  gasPriceLimit: gweiStr("100"),
+};
+
+export class DODOContext {
+  EVM: EVM;
+  Web3: Web3;
+  DODO: Contract;
+  DODOZoo: Contract;
+  BASE: Contract;
+  BaseCapital: Contract;
+  QUOTE: Contract;
+  QuoteCapital: Contract;
+  ORACLE: Contract;
+  SmartSwap: Contract;
+  SmartApprove: Contract;
+  Deployer: string;
+  Supervisor: string;
+  Maintainer: string;
+  spareAccounts: string[];
+
+  constructor() {}
+
+  async init(config: DODOContextInitConfig) {
+    this.EVM = new EVM();
+    this.Web3 = getDefaultWeb3();
+    var cloneFactory = await contracts.newContract(
+      contracts.CLONE_FACTORY_CONTRACT_NAME
+    );
+
+    this.BASE = await contracts.newContract(
+      contracts.TEST_ERC20_CONTRACT_NAME,
+      ["TestBase", 18]
+    );
+    this.QUOTE = await contracts.newContract(
+      contracts.TEST_ERC20_CONTRACT_NAME,
+      ["TestQuote", 18]
+    );
+    this.ORACLE = await contracts.newContract(
+      contracts.NAIVE_ORACLE_CONTRACT_NAME
+    );
+
+    const allAccounts = await this.Web3.eth.getAccounts();
+    this.Deployer = allAccounts[0];
+    this.Supervisor = allAccounts[1];
+    this.Maintainer = allAccounts[2];
+    this.spareAccounts = allAccounts.slice(3, 10);
+
+    var DODOTemplate = await contracts.newContract(
+      contracts.DODO_CONTRACT_NAME
+    );
+    this.DODOZoo = await contracts.newContract(
+      contracts.DODO_ZOO_CONTRACT_NAME,
+      [
+        DODOTemplate.options.address,
+        cloneFactory.options.address,
+        this.Supervisor,
+      ]
+    );
+
+    await this.DODOZoo.methods
+      .breedDODO(
+        this.Maintainer,
+        this.BASE.options.address,
+        this.QUOTE.options.address,
+        this.ORACLE.options.address,
+        config.lpFeeRate,
+        config.mtFeeRate,
+        config.k,
+        config.gasPriceLimit
+      )
+      .send(this.sendParam(this.Deployer));
+
+    this.DODO = contracts.getContractWithAddress(
+      contracts.DODO_CONTRACT_NAME,
+      await this.DODOZoo.methods
+        .getDODO(this.BASE.options.address, this.QUOTE.options.address)
+        .call()
+    );
+    await this.DODO.methods
+      .enableBaseDeposit()
+      .send(this.sendParam(this.Deployer));
+    await this.DODO.methods
+      .enableQuoteDeposit()
+      .send(this.sendParam(this.Deployer));
+    await this.DODO.methods.enableTrading().send(this.sendParam(this.Deployer));
+
+    this.BaseCapital = contracts.getContractWithAddress(
+      contracts.DODO_LP_TOKEN_CONTRACT_NAME,
+      await this.DODO.methods._BASE_CAPITAL_TOKEN_().call()
+    );
+    this.QuoteCapital = contracts.getContractWithAddress(
+      contracts.DODO_LP_TOKEN_CONTRACT_NAME,
+      await this.DODO.methods._QUOTE_CAPITAL_TOKEN_().call()
+    );
+
+    /*v1.5*/
+    this.SmartApprove = await contracts.newContract(
+      contracts.SMART_APPROVE
+    );
+
+    this.SmartSwap = await contracts.newContract(
+      contracts.SMART_SWAP,
+      [this.SmartApprove.options.address]
+    );
+
+    await this.SmartApprove.methods.setSmartSwap(this.SmartSwap.options.address).send(this.sendParam(this.Deployer));
+    /*****/
+
+    console.log(log.blueText("[Init dodo context]"));
+  }
+
+  sendParam(sender, value = "0") {
+    return {
+      from: sender,
+      gas: process.env["COVERAGE"] ? 10000000000 : 7000000,
+      gasPrice: process.env.GAS_PRICE,
+      value: decimalStr(value),
+    };
+  }
+
+  async setOraclePrice(price: string) {
+    await this.ORACLE.methods
+      .setPrice(price)
+      .send(this.sendParam(this.Deployer));
+  }
+
+  async mintTestToken(to: string, base: string, quote: string) {
+    await this.BASE.methods.mint(to, base).send(this.sendParam(this.Deployer));
+    await this.QUOTE.methods
+      .mint(to, quote)
+      .send(this.sendParam(this.Deployer));
+  }
+
+  async approveDODO(account: string) {
+    await this.BASE.methods
+      .approve(this.DODO.options.address, MAX_UINT256)
+      .send(this.sendParam(account));
+    await this.QUOTE.methods
+      .approve(this.DODO.options.address, MAX_UINT256)
+      .send(this.sendParam(account));
+  }
+}
+
+export async function getDODOContext(
+  config: DODOContextInitConfig = DefaultDODOContextInitConfig
+): Promise<DODOContext> {
+  var context = new DODOContext();
+  await context.init(config);
+  return context;
+}
diff --git a/test/utils-v1/Contracts.ts b/test/utils-v1/Contracts.ts
new file mode 100644
index 0000000..a17f6b2
--- /dev/null
+++ b/test/utils-v1/Contracts.ts
@@ -0,0 +1,118 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+var jsonPath: string = "../../build-v1/contracts/"
+/*v1.5*/
+var jsonPath2: string = "../../build/contracts/"
+/******/
+if (process.env["COVERAGE"]) {
+  console.log("[Coverage mode]")
+  jsonPath = "../../.coverage_artifacts/contracts/"
+}
+
+const CloneFactory = require(`${jsonPath}CloneFactory.json`)
+const DODO = require(`${jsonPath}DODO.json`)
+const DODOZoo = require(`${jsonPath}DODOZoo.json`)
+const DODOEthProxy = require(`${jsonPath}DODOEthProxy.json`)
+const WETH = require(`${jsonPath}WETH9.json`)
+const TestERC20 = require(`${jsonPath}TestERC20.json`)
+const NaiveOracle = require(`${jsonPath}NaiveOracle.json`)
+const DODOLpToken = require(`${jsonPath}DODOLpToken.json`)
+const Uniswap = require(`${jsonPath}UniswapV2Pair.json`)
+const UniswapArbitrageur = require(`${jsonPath}UniswapArbitrageur.json`)
+const DODOToken = require(`${jsonPath}DODOToken.json`)
+const DODOMine = require(`${jsonPath}DODOMine.json`)
+const DODOMineReader = require(`${jsonPath}DODOMineReader.json`)
+const LockedTokenVault = require(`${jsonPath}LockedTokenVault.json`)
+/*v1.5*/
+const SmartSwap = require(`${jsonPath2}SmartSwap.json`)
+const SmartApprove = require(`${jsonPath2}SmartApprove.json`)
+/******/
+
+import { getDefaultWeb3 } from './EVM';
+import { Contract } from 'web3-eth-contract';
+
+export const CLONE_FACTORY_CONTRACT_NAME = "CloneFactory"
+export const DODO_CONTRACT_NAME = "DODO"
+export const TEST_ERC20_CONTRACT_NAME = "TestERC20"
+export const NAIVE_ORACLE_CONTRACT_NAME = "NaiveOracle"
+export const DODO_LP_TOKEN_CONTRACT_NAME = "DODOLpToken"
+export const DODO_ZOO_CONTRACT_NAME = "DOOZoo"
+export const DODO_WILD_CONTRACT_NAME = "DOOWild"
+export const DODO_ETH_PROXY_CONTRACT_NAME = "DODOEthProxy"
+export const WETH_CONTRACT_NAME = "WETH"
+export const UNISWAP_CONTRACT_NAME = "Uniswap"
+export const UNISWAP_ARBITRAGEUR_CONTRACT_NAME = "UniswapArbitrageur"
+export const DODO_TOKEN_CONTRACT_NAME = "DODOToken"
+export const LOCKED_TOKEN_VAULT_CONTRACT_NAME = "LockedTokenVault"
+export const DODO_MINE_NAME = "DODOMine"
+export const DODO_MINE_READER_NAME = "DODOMineReader"
+/*v1.5*/
+export const SMART_SWAP = "SmartSwap"
+export const SMART_APPROVE = "SmartApprove"
+/******/
+
+var contractMap: { [name: string]: any } = {}
+contractMap[CLONE_FACTORY_CONTRACT_NAME] = CloneFactory
+contractMap[DODO_CONTRACT_NAME] = DODO
+contractMap[TEST_ERC20_CONTRACT_NAME] = TestERC20
+contractMap[NAIVE_ORACLE_CONTRACT_NAME] = NaiveOracle
+contractMap[DODO_LP_TOKEN_CONTRACT_NAME] = DODOLpToken
+contractMap[DODO_ZOO_CONTRACT_NAME] = DODOZoo
+contractMap[DODO_ETH_PROXY_CONTRACT_NAME] = DODOEthProxy
+contractMap[WETH_CONTRACT_NAME] = WETH
+contractMap[UNISWAP_CONTRACT_NAME] = Uniswap
+contractMap[UNISWAP_ARBITRAGEUR_CONTRACT_NAME] = UniswapArbitrageur
+contractMap[DODO_TOKEN_CONTRACT_NAME] = DODOToken
+contractMap[LOCKED_TOKEN_VAULT_CONTRACT_NAME] = LockedTokenVault
+contractMap[DODO_MINE_NAME] = DODOMine
+contractMap[DODO_MINE_READER_NAME] = DODOMineReader
+/*v1.5*/
+contractMap[SMART_SWAP] = SmartSwap
+contractMap[SMART_APPROVE] = SmartApprove
+/******/
+
+interface ContractJson {
+  abi: any;
+  networks: { [network: number]: any };
+  byteCode: string;
+}
+
+export function getContractJSON(contractName: string): ContractJson {
+  var info = contractMap[contractName]
+  return {
+    abi: info.abi,
+    networks: info.networks,
+    byteCode: info.bytecode
+  }
+}
+
+export function getContractWithAddress(contractName: string, address: string) {
+  var Json = getContractJSON(contractName)
+  var web3 = getDefaultWeb3()
+  return new web3.eth.Contract(Json.abi, address)
+}
+
+export function getDepolyedContract(contractName: string): Contract {
+  var Json = getContractJSON(contractName)
+  var networkId = process.env.NETWORK_ID
+  var deployedAddress = getContractJSON(contractName).networks[networkId].address
+  var web3 = getDefaultWeb3()
+  return new web3.eth.Contract(Json.abi, deployedAddress)
+}
+
+export async function newContract(contractName: string, args: any[] = []): Promise<Contract> {
+  var web3 = getDefaultWeb3()
+  var Json = getContractJSON(contractName)
+  var contract = new web3.eth.Contract(Json.abi)
+  var adminAccount = (await web3.eth.getAccounts())[0]
+  let parameter = {
+    from: adminAccount,
+    gas: process.env["COVERAGE"] ? 10000000000 : 7000000,
+    gasPrice: web3.utils.toHex(web3.utils.toWei('1', 'wei'))
+  }
+  return await contract.deploy({ data: Json.byteCode, arguments: args }).send(parameter)
+}
\ No newline at end of file
diff --git a/test/utils-v1/Converter.ts b/test/utils-v1/Converter.ts
new file mode 100644
index 0000000..c7108b9
--- /dev/null
+++ b/test/utils-v1/Converter.ts
@@ -0,0 +1,15 @@
+import BigNumber from "bignumber.js";
+
+export const MAX_UINT256 = "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+
+export function decimalStr(value: string): string {
+  return new BigNumber(value).multipliedBy(10 ** 18).toFixed(0, BigNumber.ROUND_DOWN)
+}
+
+export function mweiStr(value: string): string {
+  return new BigNumber(value).multipliedBy(10 ** 6).toFixed(0, BigNumber.ROUND_DOWN)
+}
+
+export function gweiStr(gwei: string): string {
+  return new BigNumber(gwei).multipliedBy(10 ** 9).toFixed(0, BigNumber.ROUND_DOWN)
+}
\ No newline at end of file
diff --git a/test/utils-v1/EVM.ts b/test/utils-v1/EVM.ts
new file mode 100644
index 0000000..75e071a
--- /dev/null
+++ b/test/utils-v1/EVM.ts
@@ -0,0 +1,92 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+// require('dotenv-flow').config();
+
+import { JsonRpcPayload, JsonRpcResponse } from 'web3-core-helpers';
+import Web3 from 'web3';
+
+export function getDefaultWeb3() {
+  return new Web3(process.env.RPC_NODE_URI)
+}
+
+export class EVM {
+  private provider = new Web3.providers.HttpProvider(process.env.RPC_NODE_URI);
+
+  public async reset(id: string): Promise<string> {
+    if (!id) {
+      throw new Error('id must be set');
+    }
+
+    await this.callJsonrpcMethod('evm_revert', [id]);
+
+    return this.snapshot();
+  }
+
+  public async snapshot(): Promise<string> {
+    return this.callJsonrpcMethod('evm_snapshot');
+  }
+
+  public async evmRevert(id: string): Promise<string> {
+    return this.callJsonrpcMethod('evm_revert', [id]);
+  }
+
+  public async stopMining(): Promise<string> {
+    return this.callJsonrpcMethod('miner_stop');
+  }
+
+  public async startMining(): Promise<string> {
+    return this.callJsonrpcMethod('miner_start');
+  }
+
+  public async mineBlock(): Promise<string> {
+    return this.callJsonrpcMethod('evm_mine');
+  }
+
+  public async fastMove(moveBlockNum: number): Promise<string> {
+    var res: string
+    for (let i = 0; i < moveBlockNum; i++) {
+      res = await this.callJsonrpcMethod('evm_mine');
+    }
+    return res
+  }
+
+  public async increaseTime(duration: number): Promise<string> {
+    await this.callJsonrpcMethod('evm_increaseTime', [duration]);
+    return this.callJsonrpcMethod('evm_mine');
+  }
+
+  public async callJsonrpcMethod(method: string, params?: (any[])): Promise<string> {
+    const args: JsonRpcPayload = {
+      method,
+      params,
+      jsonrpc: '2.0',
+      id: new Date().getTime(),
+    };
+
+    const response = await this.send(args);
+
+    return response.result;
+  }
+
+  private async send(args: JsonRpcPayload): Promise<any> {
+    return new Promise((resolve, reject) => {
+      const callback: any = (error: Error, val: JsonRpcResponse): void => {
+        if (error) {
+          reject(error);
+        } else {
+          resolve(val);
+        }
+      };
+
+      this.provider.send(
+        args,
+        callback,
+      );
+    });
+  }
+}
diff --git a/test/utils-v1/Log.ts b/test/utils-v1/Log.ts
new file mode 100644
index 0000000..7e7c3b7
--- /dev/null
+++ b/test/utils-v1/Log.ts
@@ -0,0 +1,30 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+export const blueText = x => `\x1b[36m${x}\x1b[0m`;
+export const yellowText = x => `\x1b[33m${x}\x1b[0m`;
+export const greenText = x => `\x1b[32m${x}\x1b[0m`;
+export const redText = x => `\x1b[31m${x}\x1b[0m`;
+export const numberWithCommas = x => x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+
+export async function logGas(funcCall: any, params: any, desc: string) {
+  const estimatedGas = await funcCall.estimateGas(params)
+  const receipt = await funcCall.send(params)
+  const gasUsed = receipt.gasUsed;
+  let colorFn;
+
+  if (gasUsed < 80000) {
+    colorFn = greenText;
+  } else if (gasUsed < 200000) {
+    colorFn = yellowText;
+  } else {
+    colorFn = redText;
+  }
+
+  console.log(("Gas estimated:" + numberWithCommas(estimatedGas)).padEnd(60, '.'), blueText(desc) + "  ", colorFn(numberWithCommas(gasUsed).padStart(5)));
+  return receipt
+}
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index 3e1de7f..fc9a05e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,7 @@
     "sourceMap": true,
     "declaration": true,
     "downlevelIteration": true,
-    "noUnusedLocals": true,
+    // "noUnusedLocals": true,
     "esModuleInterop": true,
     "outDir": "dist",
     "resolveJsonModule": true,
diff --git a/yarn.lock b/yarn.lock
deleted file mode 100644
index 1739e46..0000000
--- a/yarn.lock
+++ /dev/null
@@ -1,6820 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.10.1.tgz#d5481c5095daa1c57e16e54c6f9198443afb49ff"
-  dependencies:
-    "@babel/highlight" "^7.10.1"
-
-"@babel/generator@^7.10.1":
-  version "7.10.2"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.10.2.tgz#0fa5b5b2389db8bfdfcc3492b551ee20f5dd69a9"
-  dependencies:
-    "@babel/types" "^7.10.2"
-    jsesc "^2.5.1"
-    lodash "^4.17.13"
-    source-map "^0.5.0"
-
-"@babel/helper-function-name@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/helper-function-name/-/helper-function-name-7.10.1.tgz#92bd63829bfc9215aca9d9defa85f56b539454f4"
-  dependencies:
-    "@babel/helper-get-function-arity" "^7.10.1"
-    "@babel/template" "^7.10.1"
-    "@babel/types" "^7.10.1"
-
-"@babel/helper-get-function-arity@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/helper-get-function-arity/-/helper-get-function-arity-7.10.1.tgz#7303390a81ba7cb59613895a192b93850e373f7d"
-  dependencies:
-    "@babel/types" "^7.10.1"
-
-"@babel/helper-module-imports@^7.10.3":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.10.3.tgz#766fa1d57608e53e5676f23ae498ec7a95e1b11a"
-  dependencies:
-    "@babel/types" "^7.10.3"
-
-"@babel/helper-plugin-utils@^7.10.3":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.3.tgz#aac45cccf8bc1873b99a85f34bceef3beb5d3244"
-
-"@babel/helper-split-export-declaration@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.10.1.tgz#c6f4be1cbc15e3a868e4c64a17d5d31d754da35f"
-  dependencies:
-    "@babel/types" "^7.10.1"
-
-"@babel/helper-validator-identifier@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.1.tgz#5770b0c1a826c4f53f5ede5e153163e0318e94b5"
-
-"@babel/helper-validator-identifier@^7.10.3":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.3.tgz#60d9847f98c4cea1b279e005fdb7c28be5412d15"
-
-"@babel/highlight@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.10.1.tgz#841d098ba613ba1a427a2b383d79e35552c38ae0"
-  dependencies:
-    "@babel/helper-validator-identifier" "^7.10.1"
-    chalk "^2.0.0"
-    js-tokens "^4.0.0"
-
-"@babel/parser@^7.10.1", "@babel/parser@^7.7.0":
-  version "7.10.2"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.10.2.tgz#871807f10442b92ff97e4783b9b54f6a0ca812d0"
-
-"@babel/plugin-transform-runtime@^7.5.5":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.10.3.tgz#3b287b06acc534a7cb6e6c71d6b1d88b1922dd6c"
-  dependencies:
-    "@babel/helper-module-imports" "^7.10.3"
-    "@babel/helper-plugin-utils" "^7.10.3"
-    resolve "^1.8.1"
-    semver "^5.5.1"
-
-"@babel/runtime@^7.5.5":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.10.3.tgz#670d002655a7c366540c67f6fd3342cd09500364"
-  dependencies:
-    regenerator-runtime "^0.13.4"
-
-"@babel/template@^7.10.1":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.10.1.tgz#e167154a94cb5f14b28dc58f5356d2162f539811"
-  dependencies:
-    "@babel/code-frame" "^7.10.1"
-    "@babel/parser" "^7.10.1"
-    "@babel/types" "^7.10.1"
-
-"@babel/traverse@^7.7.0":
-  version "7.10.1"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.10.1.tgz#bbcef3031e4152a6c0b50147f4958df54ca0dd27"
-  dependencies:
-    "@babel/code-frame" "^7.10.1"
-    "@babel/generator" "^7.10.1"
-    "@babel/helper-function-name" "^7.10.1"
-    "@babel/helper-split-export-declaration" "^7.10.1"
-    "@babel/parser" "^7.10.1"
-    "@babel/types" "^7.10.1"
-    debug "^4.1.0"
-    globals "^11.1.0"
-    lodash "^4.17.13"
-
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-  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.10.2.tgz#30283be31cad0dbf6fb00bd40641ca0ea675172d"
-  dependencies:
-    "@babel/helper-validator-identifier" "^7.10.1"
-    lodash "^4.17.13"
-    to-fast-properties "^2.0.0"
-
-"@babel/types@^7.10.3":
-  version "7.10.3"
-  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.10.3.tgz#6535e3b79fea86a6b09e012ea8528f935099de8e"
-  dependencies:
-    "@babel/helper-validator-identifier" "^7.10.3"
-    lodash "^4.17.13"
-    to-fast-properties "^2.0.0"
-
-"@ethersproject/abi@5.0.0-beta.153":
-  version "5.0.0-beta.153"
-  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.0.0-beta.153.tgz#43a37172b33794e4562999f6e2d555b7599a8eee"
-  dependencies:
-    "@ethersproject/address" ">=5.0.0-beta.128"
-    "@ethersproject/bignumber" ">=5.0.0-beta.130"
-    "@ethersproject/bytes" ">=5.0.0-beta.129"
-    "@ethersproject/constants" ">=5.0.0-beta.128"
-    "@ethersproject/hash" ">=5.0.0-beta.128"
-    "@ethersproject/keccak256" ">=5.0.0-beta.127"
-    "@ethersproject/logger" ">=5.0.0-beta.129"
-    "@ethersproject/properties" ">=5.0.0-beta.131"
-    "@ethersproject/strings" ">=5.0.0-beta.130"
-
-"@ethersproject/address@>=5.0.0-beta.128":
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-  resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.0.0-beta.135.tgz#8d4697c81dc27758b05e7eb7507c254f2ef0e5dc"
-  dependencies:
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-  resolved "https://registry.yarnpkg.com/buffer/-/buffer-5.6.0.tgz#a31749dc7d81d84db08abf937b6b8c4033f62786"
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-    ieee754 "^1.1.4"
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-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
-
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
-  dependencies:
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-    component-emitter "^1.2.1"
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-    isobject "^3.0.1"
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-    union-value "^1.0.0"
-    unset-value "^1.0.0"
-
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-  version "6.1.0"
-  resolved "https://registry.yarnpkg.com/cacheable-request/-/cacheable-request-6.1.0.tgz#20ffb8bd162ba4be11e9567d823db651052ca912"
-  dependencies:
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-    get-stream "^5.1.0"
-    http-cache-semantics "^4.0.0"
-    keyv "^3.0.0"
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-    normalize-url "^4.1.0"
-    responselike "^1.0.2"
-
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-  version "5.3.1"
-  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
-
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-  version "1.0.30001088"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001088.tgz#23a6b9e192106107458528858f2c0e0dba0d9073"
-
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-  version "0.12.0"
-  resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
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-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/chai-bignumber/-/chai-bignumber-3.0.0.tgz#e90cf1f468355bbb11a9acd051222586cd2648a9"
-
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-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
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-    check-error "^1.0.2"
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-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
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-
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-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
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-    escape-string-regexp "^1.0.5"
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/checkpoint-store/-/checkpoint-store-1.1.0.tgz#04e4cb516b91433893581e6d4601a78e9552ea06"
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-
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-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.3.0.tgz#12c0714668c55800f659e262d4962a97faf554a6"
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-    braces "~3.0.2"
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-
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-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
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-    async-each "^1.0.0"
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-
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-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.4.tgz#6fc9d7b42d32a583596337666e7d08084da2cc6b"
-
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-  version "0.7.5"
-  resolved "https://registry.yarnpkg.com/cids/-/cids-0.7.5.tgz#60a08138a99bfb69b6be4ceb63bfef7a396b28b2"
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-    class-is "^1.1.0"
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-    multihashes "~0.4.15"
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-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz#8760e4ecc272f4c363532f926d874aae2c1397de"
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-    safe-buffer "^5.0.1"
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/class-is/-/class-is-1.1.0.tgz#9d3c0fba0440d211d843cec3dedfa48055005825"
-
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-  version "0.3.6"
-  resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
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-    define-property "^0.2.5"
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-    static-extend "^0.1.1"
-
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-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
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-    strip-ansi "^5.2.0"
-    wrap-ansi "^5.1.0"
-
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/clone-response/-/clone-response-1.0.2.tgz#d1dc973920314df67fbeb94223b4ee350239e96b"
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-
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-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.2.tgz#1b7f4b9f591f1e8f83670401600345a02887435f"
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
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-    object-visit "^1.0.0"
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-  version "1.9.3"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
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-
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-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
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-  version "1.0.8"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
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-
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-  version "2.20.3"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
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-  version "2.8.1"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.8.1.tgz#06be367febfda0c330aa1e2a072d3dc9762425d4"
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-
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-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
-
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-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-
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-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
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-    inherits "^2.0.3"
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-  version "0.5.3"
-  resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.3.tgz#e130caf7e7279087c5616c2007d0485698984fbd"
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-
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-  version "2.5.2"
-  resolved "https://registry.yarnpkg.com/content-hash/-/content-hash-2.5.2.tgz#bbc2655e7c21f14fd3bfc7b7d4bfe6e454c9e211"
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-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
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-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.7.0.tgz#17a2cb882d7f77d3490585e2ce6c524424a3a442"
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-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
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-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
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-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.2.tgz#dd8a235530752f988f9a0844f3fc589e3111125c"
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-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
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-  version "2.8.5"
-  resolved "https://registry.yarnpkg.com/cors/-/cors-2.8.5.tgz#eac11da51592dd86b9f06f6e7ac293b3df875d29"
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-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.3.tgz#c9111b6f33045c4697f144787f9254cdc77c45ff"
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-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/create-hash/-/create-hash-1.2.0.tgz#889078af11a63756bcfb59bd221996be3a9ef196"
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-  version "1.1.7"
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-  version "6.0.5"
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-  version "3.12.0"
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-debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.0, debug@^2.6.8, debug@^2.6.9:
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-  version "1.2.0"
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-  version "0.2.0"
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-    safe-buffer "^5.1.1"
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/parse-code-context/-/parse-code-context-1.0.0.tgz#718c295c593d0d19a37f898473268cc75e98de1e"
-
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-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/parse-glob/-/parse-glob-3.0.4.tgz#b2c376cfb11f35513badd173ef0bb6e3a388391c"
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-    is-dotfile "^1.0.0"
-    is-extglob "^1.0.0"
-    is-glob "^2.0.0"
-
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-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/parse-headers/-/parse-headers-2.0.3.tgz#5e8e7512383d140ba02f0c7aa9f49b4399c92515"
-
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-  version "1.3.3"
-  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
-
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-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
-
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-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
-
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
-
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
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-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
-
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-  version "0.1.7"
-  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
-
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-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
-
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
-
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-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.1.0.tgz#8839d778223e922164803a411dc62fddb57d3b02"
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-    create-hmac "^1.1.4"
-    ripemd160 "^2.0.1"
-    safe-buffer "^5.0.1"
-    sha.js "^2.4.8"
-
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-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.1.1.tgz#cb8724b0fada984596856d1a6ebafd3584654b94"
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-    create-hmac "^1.1.4"
-    ripemd160 "^2.0.1"
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-pend@~1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/pend/-/pend-1.2.0.tgz#7a57eb550a6783f9115331fcf4663d5c8e007a50"
-
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-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
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-  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
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-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
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-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
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-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/pinkie-promise/-/pinkie-promise-2.0.1.tgz#2135d6dfa7a358c069ac9b178776288228450ffa"
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-
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-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
-
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-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
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-  resolved "https://registry.yarnpkg.com/precond/-/precond-0.2.3.tgz#aa9591bcaa24923f1e0f4849d240f47efc1075ac"
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-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
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-  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
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-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
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-  resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
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-  resolved "https://registry.yarnpkg.com/prettier-plugin-solidity/-/prettier-plugin-solidity-1.0.0-alpha.53.tgz#42ef3435fb179bc41fe83f08d7b9327c88bf4a01"
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-  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/promise-to-callback/-/promise-to-callback-1.0.0.tgz#5d2a749010bfb67d963598fcd3960746a68feef7"
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-  resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.6.tgz#fdc2336505447d3f2f2c638ed272caf614bbb2bf"
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-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
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-  version "1.8.0"
-  resolved "https://registry.yarnpkg.com/psl/-/psl-1.8.0.tgz#9326f8bcfb013adcc005fdff056acce020e51c24"
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-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.3.tgz#4fcc9d77a07e48ba7527e7cbe0de33d0701331e0"
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-  version "3.0.0"
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-  version "6.7.0"
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-  version "6.5.2"
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-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/query-string/-/query-string-5.1.1.tgz#a78c012b71c17e05f2e3fa2319dd330682efb3cb"
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-  version "2.1.0"
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-web3-eth-contract@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.2.tgz#84e92714918a29e1028ee7718f0712536e14e9a1"
-  dependencies:
-    "@types/bn.js" "^4.11.4"
-    underscore "1.9.1"
-    web3-core "1.2.2"
-    web3-core-helpers "1.2.2"
-    web3-core-method "1.2.2"
-    web3-core-promievent "1.2.2"
-    web3-core-subscriptions "1.2.2"
-    web3-eth-abi "1.2.2"
-    web3-utils "1.2.2"
-
-web3-eth-contract@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.6.tgz#39111543960035ed94c597a239cf5aa1da796741"
-  dependencies:
-    "@types/bn.js" "^4.11.4"
-    underscore "1.9.1"
-    web3-core "1.2.6"
-    web3-core-helpers "1.2.6"
-    web3-core-method "1.2.6"
-    web3-core-promievent "1.2.6"
-    web3-core-subscriptions "1.2.6"
-    web3-eth-abi "1.2.6"
-    web3-utils "1.2.6"
-
-web3-eth-contract@1.2.8, web3-eth-contract@^1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-eth-contract/-/web3-eth-contract-1.2.8.tgz#ff75920ac698a70781edcebbf75287a6d0f14499"
-  dependencies:
-    "@types/bn.js" "^4.11.4"
-    underscore "1.9.1"
-    web3-core "1.2.8"
-    web3-core-helpers "1.2.8"
-    web3-core-method "1.2.8"
-    web3-core-promievent "1.2.8"
-    web3-core-subscriptions "1.2.8"
-    web3-eth-abi "1.2.8"
-    web3-utils "1.2.8"
-
-web3-eth-ens@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.1.tgz#a0e52eee68c42a8b9865ceb04e5fb022c2d971d5"
-  dependencies:
-    eth-ens-namehash "2.0.8"
-    underscore "1.9.1"
-    web3-core "1.2.1"
-    web3-core-helpers "1.2.1"
-    web3-core-promievent "1.2.1"
-    web3-eth-abi "1.2.1"
-    web3-eth-contract "1.2.1"
-    web3-utils "1.2.1"
-
-web3-eth-ens@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.2.tgz#0a4abed1d4cbdacbf5e1ab06e502d806d1192bc6"
-  dependencies:
-    eth-ens-namehash "2.0.8"
-    underscore "1.9.1"
-    web3-core "1.2.2"
-    web3-core-helpers "1.2.2"
-    web3-core-promievent "1.2.2"
-    web3-eth-abi "1.2.2"
-    web3-eth-contract "1.2.2"
-    web3-utils "1.2.2"
-
-web3-eth-ens@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.6.tgz#bf86a624c4c72bc59913c2345180d3ea947e110d"
-  dependencies:
-    eth-ens-namehash "2.0.8"
-    underscore "1.9.1"
-    web3-core "1.2.6"
-    web3-core-helpers "1.2.6"
-    web3-core-promievent "1.2.6"
-    web3-eth-abi "1.2.6"
-    web3-eth-contract "1.2.6"
-    web3-utils "1.2.6"
-
-web3-eth-ens@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-eth-ens/-/web3-eth-ens-1.2.8.tgz#247daddfdbf7533adb0f45cd2f75c75e52f7e678"
-  dependencies:
-    content-hash "^2.5.2"
-    eth-ens-namehash "2.0.8"
-    underscore "1.9.1"
-    web3-core "1.2.8"
-    web3-core-helpers "1.2.8"
-    web3-core-promievent "1.2.8"
-    web3-eth-abi "1.2.8"
-    web3-eth-contract "1.2.8"
-    web3-utils "1.2.8"
-
-web3-eth-iban@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.1.tgz#2c3801718946bea24e9296993a975c80b5acf880"
-  dependencies:
-    bn.js "4.11.8"
-    web3-utils "1.2.1"
-
-web3-eth-iban@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.2.tgz#76bec73bad214df7c4192388979a59fc98b96c5a"
-  dependencies:
-    bn.js "4.11.8"
-    web3-utils "1.2.2"
-
-web3-eth-iban@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.6.tgz#0b22191fd1aa6e27f7ef0820df75820bfb4ed46b"
-  dependencies:
-    bn.js "4.11.8"
-    web3-utils "1.2.6"
-
-web3-eth-iban@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-eth-iban/-/web3-eth-iban-1.2.8.tgz#414e80a7fb2d1ea16490bc2c8fc29a996aec5612"
-  dependencies:
-    bn.js "4.11.8"
-    web3-utils "1.2.8"
-
-web3-eth-personal@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.1.tgz#244e9911b7b482dc17c02f23a061a627c6e47faf"
-  dependencies:
-    web3-core "1.2.1"
-    web3-core-helpers "1.2.1"
-    web3-core-method "1.2.1"
-    web3-net "1.2.1"
-    web3-utils "1.2.1"
-
-web3-eth-personal@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.2.tgz#eee1c86a8132fa16b5e34c6d421ca92e684f0be6"
-  dependencies:
-    "@types/node" "^12.6.1"
-    web3-core "1.2.2"
-    web3-core-helpers "1.2.2"
-    web3-core-method "1.2.2"
-    web3-net "1.2.2"
-    web3-utils "1.2.2"
-
-web3-eth-personal@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.6.tgz#47a0a0657ec04dd77f95451a6869d4751d324b6b"
-  dependencies:
-    "@types/node" "^12.6.1"
-    web3-core "1.2.6"
-    web3-core-helpers "1.2.6"
-    web3-core-method "1.2.6"
-    web3-net "1.2.6"
-    web3-utils "1.2.6"
-
-web3-eth-personal@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-eth-personal/-/web3-eth-personal-1.2.8.tgz#8ebb27210b4c9c9555a30c5bb2ce8db12f84cd24"
-  dependencies:
-    "@types/node" "^12.6.1"
-    web3-core "1.2.8"
-    web3-core-helpers "1.2.8"
-    web3-core-method "1.2.8"
-    web3-net "1.2.8"
-    web3-utils "1.2.8"
-
-web3-eth@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.1.tgz#b9989e2557c73a9e8ffdc107c6dafbe72c79c1b0"
-  dependencies:
-    underscore "1.9.1"
-    web3-core "1.2.1"
-    web3-core-helpers "1.2.1"
-    web3-core-method "1.2.1"
-    web3-core-subscriptions "1.2.1"
-    web3-eth-abi "1.2.1"
-    web3-eth-accounts "1.2.1"
-    web3-eth-contract "1.2.1"
-    web3-eth-ens "1.2.1"
-    web3-eth-iban "1.2.1"
-    web3-eth-personal "1.2.1"
-    web3-net "1.2.1"
-    web3-utils "1.2.1"
-
-web3-eth@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.2.tgz#65a1564634a23b990efd1655bf94ad513904286c"
-  dependencies:
-    underscore "1.9.1"
-    web3-core "1.2.2"
-    web3-core-helpers "1.2.2"
-    web3-core-method "1.2.2"
-    web3-core-subscriptions "1.2.2"
-    web3-eth-abi "1.2.2"
-    web3-eth-accounts "1.2.2"
-    web3-eth-contract "1.2.2"
-    web3-eth-ens "1.2.2"
-    web3-eth-iban "1.2.2"
-    web3-eth-personal "1.2.2"
-    web3-net "1.2.2"
-    web3-utils "1.2.2"
-
-web3-eth@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.6.tgz#15a8c65fdde0727872848cae506758d302d8d046"
-  dependencies:
-    underscore "1.9.1"
-    web3-core "1.2.6"
-    web3-core-helpers "1.2.6"
-    web3-core-method "1.2.6"
-    web3-core-subscriptions "1.2.6"
-    web3-eth-abi "1.2.6"
-    web3-eth-accounts "1.2.6"
-    web3-eth-contract "1.2.6"
-    web3-eth-ens "1.2.6"
-    web3-eth-iban "1.2.6"
-    web3-eth-personal "1.2.6"
-    web3-net "1.2.6"
-    web3-utils "1.2.6"
-
-web3-eth@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-eth/-/web3-eth-1.2.8.tgz#cf6a16fae4d7c12b90cfb6ef570cb1a2acc34c1b"
-  dependencies:
-    underscore "1.9.1"
-    web3-core "1.2.8"
-    web3-core-helpers "1.2.8"
-    web3-core-method "1.2.8"
-    web3-core-subscriptions "1.2.8"
-    web3-eth-abi "1.2.8"
-    web3-eth-accounts "1.2.8"
-    web3-eth-contract "1.2.8"
-    web3-eth-ens "1.2.8"
-    web3-eth-iban "1.2.8"
-    web3-eth-personal "1.2.8"
-    web3-net "1.2.8"
-    web3-utils "1.2.8"
-
-web3-net@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.1.tgz#edd249503315dd5ab4fa00220f6509d95bb7ab10"
-  dependencies:
-    web3-core "1.2.1"
-    web3-core-method "1.2.1"
-    web3-utils "1.2.1"
-
-web3-net@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.2.tgz#5c3226ca72df7c591422440ce6f1203fd42ddad9"
-  dependencies:
-    web3-core "1.2.2"
-    web3-core-method "1.2.2"
-    web3-utils "1.2.2"
-
-web3-net@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.6.tgz#035ca0fbe55282fda848ca17ebb4c8966147e5ea"
-  dependencies:
-    web3-core "1.2.6"
-    web3-core-method "1.2.6"
-    web3-utils "1.2.6"
-
-web3-net@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-net/-/web3-net-1.2.8.tgz#582fc2d4ba32c2e5c7761624e4be7c5434142d66"
-  dependencies:
-    web3-core "1.2.8"
-    web3-core-method "1.2.8"
-    web3-utils "1.2.8"
-
-web3-providers-http@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.1.tgz#c93ea003a42e7b894556f7e19dd3540f947f5013"
-  dependencies:
-    web3-core-helpers "1.2.1"
-    xhr2-cookies "1.1.0"
-
-web3-providers-http@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.2.tgz#155e55c1d69f4c5cc0b411ede40dea3d06720956"
-  dependencies:
-    web3-core-helpers "1.2.2"
-    xhr2-cookies "1.1.0"
-
-web3-providers-http@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.6.tgz#3c7b1252751fb37e53b873fce9dbb6340f5e31d9"
-  dependencies:
-    web3-core-helpers "1.2.6"
-    xhr2-cookies "1.1.0"
-
-web3-providers-http@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-providers-http/-/web3-providers-http-1.2.8.tgz#cd7fc4d49df6980b5dd0fb1b5a808bc4b6a0069d"
-  dependencies:
-    web3-core-helpers "1.2.8"
-    xhr2-cookies "1.1.0"
-
-web3-providers-ipc@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.1.tgz#017bfc687a8fc5398df2241eb98f135e3edd672c"
-  dependencies:
-    oboe "2.1.4"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.1"
-
-web3-providers-ipc@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.2.tgz#c6d165a12bc68674b4cdd543ea18aec79cafc2e8"
-  dependencies:
-    oboe "2.1.4"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.2"
-
-web3-providers-ipc@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.6.tgz#adabab5ac66b3ff8a26c7dc97af3f1a6a7609701"
-  dependencies:
-    oboe "2.1.4"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.6"
-
-web3-providers-ipc@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-providers-ipc/-/web3-providers-ipc-1.2.8.tgz#47be918ddd077999aa14703169b76c807f45d894"
-  dependencies:
-    oboe "2.1.4"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.8"
-
-web3-providers-ws@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.1.tgz#2d941eaf3d5a8caa3214eff8dc16d96252b842cb"
-  dependencies:
-    underscore "1.9.1"
-    web3-core-helpers "1.2.1"
-    websocket "github:web3-js/WebSocket-Node#polyfill/globalThis"
-
-web3-providers-ws@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.2.tgz#d2c05c68598cea5ad3fa6ef076c3bcb3ca300d29"
-  dependencies:
-    underscore "1.9.1"
-    web3-core-helpers "1.2.2"
-    websocket "github:web3-js/WebSocket-Node#polyfill/globalThis"
-
-web3-providers-ws@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.6.tgz#3cecc49f7c99f07a75076d3c54247050bc4f7e11"
-  dependencies:
-    "@web3-js/websocket" "^1.0.29"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.6"
-
-web3-providers-ws@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-providers-ws/-/web3-providers-ws-1.2.8.tgz#9e6454edc82d753d398c8d1e044632c234434a46"
-  dependencies:
-    "@web3-js/websocket" "^1.0.29"
-    eventemitter3 "^4.0.0"
-    underscore "1.9.1"
-    web3-core-helpers "1.2.8"
-
-web3-shh@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.1.tgz#4460e3c1e07faf73ddec24ccd00da46f89152b0c"
-  dependencies:
-    web3-core "1.2.1"
-    web3-core-method "1.2.1"
-    web3-core-subscriptions "1.2.1"
-    web3-net "1.2.1"
-
-web3-shh@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.2.tgz#44ed998f2a6ba0ec5cb9d455184a0f647826a49c"
-  dependencies:
-    web3-core "1.2.2"
-    web3-core-method "1.2.2"
-    web3-core-subscriptions "1.2.2"
-    web3-net "1.2.2"
-
-web3-shh@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.6.tgz#2492616da4cac32d4c7534b890f43bac63190c14"
-  dependencies:
-    web3-core "1.2.6"
-    web3-core-method "1.2.6"
-    web3-core-subscriptions "1.2.6"
-    web3-net "1.2.6"
-
-web3-shh@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-shh/-/web3-shh-1.2.8.tgz#5162d9d13bc6838d390df1cd39e5f87235c1c2ae"
-  dependencies:
-    web3-core "1.2.8"
-    web3-core-method "1.2.8"
-    web3-core-subscriptions "1.2.8"
-    web3-net "1.2.8"
-
-web3-utils@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.1.tgz#21466e38291551de0ab34558de21512ac4274534"
-  dependencies:
-    bn.js "4.11.8"
-    eth-lib "0.2.7"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randomhex "0.1.5"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
-web3-utils@1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.2.tgz#b53a08c40d2c3f31d3c4a28e7d749405df99c8c0"
-  dependencies:
-    bn.js "4.11.8"
-    eth-lib "0.2.7"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
-web3-utils@1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.6.tgz#b9a25432da00976457fcc1094c4af8ac6d486db9"
-  dependencies:
-    bn.js "4.11.8"
-    eth-lib "0.2.7"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
-web3-utils@1.2.8:
-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3-utils/-/web3-utils-1.2.8.tgz#5321d91715cd4c0869005705a33c4c042a532b18"
-  dependencies:
-    bn.js "4.11.8"
-    eth-lib "0.2.7"
-    ethereum-bloom-filters "^1.0.6"
-    ethjs-unit "0.1.6"
-    number-to-bn "1.7.0"
-    randombytes "^2.1.0"
-    underscore "1.9.1"
-    utf8 "3.0.0"
-
-web3@1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.1.tgz#5d8158bcca47838ab8c2b784a2dee4c3ceb4179b"
-  dependencies:
-    web3-bzz "1.2.1"
-    web3-core "1.2.1"
-    web3-eth "1.2.1"
-    web3-eth-personal "1.2.1"
-    web3-net "1.2.1"
-    web3-shh "1.2.1"
-    web3-utils "1.2.1"
-
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-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.2.tgz#b1b8b69aafdf94cbaeadbb68a8aa1df2ef266aec"
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-    "@types/node" "^12.6.1"
-    web3-bzz "1.2.2"
-    web3-core "1.2.2"
-    web3-eth "1.2.2"
-    web3-eth-personal "1.2.2"
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-    web3-shh "1.2.2"
-    web3-utils "1.2.2"
-
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-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.6.tgz#c497dcb14cdd8d6d9fb6b445b3b68ff83f8ccf68"
-  dependencies:
-    "@types/node" "^12.6.1"
-    web3-bzz "1.2.6"
-    web3-core "1.2.6"
-    web3-eth "1.2.6"
-    web3-eth-personal "1.2.6"
-    web3-net "1.2.6"
-    web3-shh "1.2.6"
-    web3-utils "1.2.6"
-
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-  version "1.2.8"
-  resolved "https://registry.yarnpkg.com/web3/-/web3-1.2.8.tgz#20b24baa769e0224a708ef5bf196a5b83d19540b"
-  dependencies:
-    web3-bzz "1.2.8"
-    web3-core "1.2.8"
-    web3-eth "1.2.8"
-    web3-eth-personal "1.2.8"
-    web3-net "1.2.8"
-    web3-shh "1.2.8"
-    web3-utils "1.2.8"
-
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-  version "1.0.31"
-  resolved "https://registry.yarnpkg.com/websocket/-/websocket-1.0.31.tgz#e5d0f16c3340ed87670e489ecae6144c79358730"
-  dependencies:
-    debug "^2.2.0"
-    es5-ext "^0.10.50"
-    nan "^2.14.0"
-    typedarray-to-buffer "^3.1.5"
-    yaeti "^0.0.6"
-
-"websocket@github:web3-js/WebSocket-Node#polyfill/globalThis":
-  version "1.0.29"
-  resolved "https://codeload.github.com/web3-js/WebSocket-Node/tar.gz/ef5ea2f41daf4a2113b80c9223df884b4d56c400"
-  dependencies:
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-    es5-ext "^0.10.50"
-    nan "^2.14.0"
-    typedarray-to-buffer "^3.1.5"
-    yaeti "^0.0.6"
-
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-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
-
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-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
-
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-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/which-typed-array/-/which-typed-array-1.1.2.tgz#e5f98e56bda93e3dac196b01d47c1156679c00b2"
-  dependencies:
-    available-typed-arrays "^1.0.2"
-    es-abstract "^1.17.5"
-    foreach "^2.0.5"
-    function-bind "^1.1.1"
-    has-symbols "^1.0.1"
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-
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-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
-  dependencies:
-    isexe "^2.0.0"
-
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-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
-  dependencies:
-    string-width "^1.0.2 || 2"
-
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-  version "1.2.3"
-  resolved "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz#610636f6b1f703891bd34771ccb17fb93b47079c"
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
-
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-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-5.1.0.tgz#1fd1f67235d5b6d0fee781056001bfb694c03b09"
-  dependencies:
-    ansi-styles "^3.2.0"
-    string-width "^3.0.0"
-    strip-ansi "^5.0.0"
-
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
-
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-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-3.3.3.tgz#f1cf84fe2d5e901ebce94efaece785f187a228f2"
-  dependencies:
-    async-limiter "~1.0.0"
-    safe-buffer "~5.1.0"
-    ultron "~1.1.0"
-
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-  version "5.2.2"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-5.2.2.tgz#dffef14866b8e8dc9133582514d1befaf96e980f"
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-    async-limiter "~1.0.0"
-
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-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/xhr-request-promise/-/xhr-request-promise-0.1.3.tgz#2d5f4b16d8c6c893be97f1a62b0ed4cf3ca5f96c"
-  dependencies:
-    xhr-request "^1.1.0"
-
-xhr-request@^1.0.1, xhr-request@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/xhr-request/-/xhr-request-1.1.0.tgz#f4a7c1868b9f198723444d82dcae317643f2e2ed"
-  dependencies:
-    buffer-to-arraybuffer "^0.0.5"
-    object-assign "^4.1.1"
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-    simple-get "^2.7.0"
-    timed-out "^4.0.1"
-    url-set-query "^1.0.0"
-    xhr "^2.0.4"
-
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-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz#7d77449d0999197f155cb73b23df72505ed89d48"
-  dependencies:
-    cookiejar "^2.1.1"
-
-xhr@^2.0.4, xhr@^2.2.0, xhr@^2.3.3:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.5.0.tgz#bed8d1676d5ca36108667692b74b316c496e49dd"
-  dependencies:
-    global "~4.3.0"
-    is-function "^1.0.1"
-    parse-headers "^2.0.0"
-    xtend "^4.0.0"
-
-xmlhttprequest@1.8.0:
-  version "1.8.0"
-  resolved "https://registry.yarnpkg.com/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz#67fe075c5c24fef39f9d65f5f7b7fe75171968fc"
-
-xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.0, xtend@~4.0.1:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
-
-xtend@~2.1.1:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-2.1.2.tgz#6efecc2a4dad8e6962c4901b337ce7ba87b5d28b"
-  dependencies:
-    object-keys "~0.4.0"
-
-y18n@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
-
-yaeti@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/yaeti/-/yaeti-0.0.6.tgz#f26f484d72684cf42bedfb76970aa1608fbf9577"
-
-yallist@^3.0.0, yallist@^3.0.3:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
-
-yargs-parser@13.1.2, yargs-parser@^13.1.0, yargs-parser@^13.1.2:
-  version "13.1.2"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-13.1.2.tgz#130f09702ebaeef2650d54ce6e3e5706f7a4fb38"
-  dependencies:
-    camelcase "^5.0.0"
-    decamelize "^1.2.0"
-
-yargs-unparser@1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-1.6.0.tgz#ef25c2c769ff6bd09e4b0f9d7c605fb27846ea9f"
-  dependencies:
-    flat "^4.1.0"
-    lodash "^4.17.15"
-    yargs "^13.3.0"
-
-yargs@13.2.4:
-  version "13.2.4"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.2.4.tgz#0b562b794016eb9651b98bd37acf364aa5d6dc83"
-  dependencies:
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-    find-up "^3.0.0"
-    get-caller-file "^2.0.1"
-    os-locale "^3.1.0"
-    require-directory "^2.1.1"
-    require-main-filename "^2.0.0"
-    set-blocking "^2.0.0"
-    string-width "^3.0.0"
-    which-module "^2.0.0"
-    y18n "^4.0.0"
-    yargs-parser "^13.1.0"
-
-yargs@13.3.2, yargs@^13.3.0:
-  version "13.3.2"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.3.2.tgz#ad7ffefec1aa59565ac915f82dccb38a9c31a2dd"
-  dependencies:
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-    find-up "^3.0.0"
-    get-caller-file "^2.0.1"
-    require-directory "^2.1.1"
-    require-main-filename "^2.0.0"
-    set-blocking "^2.0.0"
-    string-width "^3.0.0"
-    which-module "^2.0.0"
-    y18n "^4.0.0"
-    yargs-parser "^13.1.2"
-
-yauzl@^2.4.2:
-  version "2.10.0"
-  resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz#c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9"
-  dependencies:
-    buffer-crc32 "~0.2.3"
-    fd-slicer "~1.1.0"
-
-yn@3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"