diff --git a/README.md b/README.md
index df5d521e..44a8e219 100644
--- a/README.md
+++ b/README.md
@@ -127,6 +127,7 @@ module.exports = {
 | measureModifierCoverage | *boolean* | `true` | Computes each modifier invocation as a code branch. [More...][34] |
 | modifierWhitelist | *String[]* | `[]` | List of modifier names (ex: "onlyOwner") to exclude from branch measurement. (Useful for modifiers which prepare something instead of acting as a gate.)) |
 | matrixOutputPath | *String* | `./testMatrix.json` | Relative path to write test matrix JSON object to. [More...][38] |
+| abiOutputPath | *String* | `./humanReadableAbis.json` | Relative path to write diff-able ABI data to. [More...][38] |
 | istanbulFolder | *String* | `./coverage` |  Folder location for Istanbul coverage reports. |
 | istanbulReporter | *Array* | `['html', 'lcov', 'text', 'json']` | [Istanbul coverage reporters][2]  |
 | mocha | *Object* | `{ }` | [Mocha options][3] to merge into existing mocha config. `grep` and `invert` are useful for skipping certain tests under coverage using tags in the test descriptions.|
diff --git a/lib/abi.js b/lib/abi.js
new file mode 100644
index 00000000..2b8455e7
--- /dev/null
+++ b/lib/abi.js
@@ -0,0 +1,99 @@
+const ethersABI = require("@ethersproject/abi");
+const difflib = require('difflib');
+
+class AbiUtils {
+
+  diff(orig={}, cur={}){
+    let plus = 0;
+    let minus = 0;
+
+    const unifiedDiff = difflib.unifiedDiff(
+      orig.humanReadableAbiList,
+      cur.humanReadableAbiList,
+      {
+        fromfile: orig.contractName,
+        tofile: cur.contractName,
+        fromfiledate: `sha: ${orig.sha}`,
+        tofiledate: `sha: ${cur.sha}`,
+        lineterm: ''
+      }
+    );
+
+    // Count changes (unified diff always has a plus & minus in header);
+    if (unifiedDiff.length){
+      plus = -1;
+      minus = -1;
+    }
+
+    unifiedDiff.forEach(line => {
+      if (line[0] === `+`) plus++;
+      if (line[0] === `-`) minus++;
+    })
+
+    return {
+      plus,
+      minus,
+      unifiedDiff
+    }
+  }
+
+  toHumanReadableFunctions(contract){
+    const human = [];
+    const ethersOutput = new ethersABI.Interface(contract.abi).functions;
+    const signatures = Object.keys(ethersOutput);
+
+    for (const sig of signatures){
+      const method = ethersOutput[sig];
+      let returns = '';
+
+      method.outputs.forEach(output => {
+        (returns.length)
+          ? returns += `, ${output.type}`
+          : returns += output.type;
+      });
+
+      let readable = `${method.type} ${sig} ${method.stateMutability}`;
+
+      if (returns.length){
+        readable += ` returns (${returns})`
+      }
+
+      human.push(readable);
+    }
+
+    return human;
+  }
+
+  toHumanReadableEvents(contract){
+    const human = [];
+    const ethersOutput = new ethersABI.Interface(contract.abi).events;
+    const signatures = Object.keys(ethersOutput);
+
+    for (const sig of signatures){
+      const method = ethersOutput[sig];
+      const readable = `${ethersOutput[sig].type} ${sig}`;
+      human.push(readable);
+    }
+
+    return human;
+  }
+
+  generateHumanReadableAbiList(_artifacts, sha){
+    const list = [];
+    if (_artifacts.length){
+      for (const item of _artifacts){
+        const fns = this.toHumanReadableFunctions(item);
+        const evts = this.toHumanReadableEvents(item);
+        const all = fns.concat(evts);
+        list.push({
+          contractName: item.contractName,
+          sha: sha,
+          humanReadableAbiList: all
+        })
+      }
+    }
+    return list;
+  }
+}
+
+module.exports = AbiUtils;
\ No newline at end of file
diff --git a/lib/api.js b/lib/api.js
index aab4caa5..57d8ae23 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -12,13 +12,15 @@ const Instrumenter = require('./instrumenter');
 const Coverage = require('./coverage');
 const DataCollector = require('./collector');
 const AppUI = require('./ui').AppUI;
+const AbiUtils = require('./abi');
 
 /**
  * Coverage Runner
  */
 class API {
   constructor(config={}) {
-    this.validator = new ConfigValidator()
+    this.validator = new ConfigValidator();
+    this.abiUtils = new AbiUtils();
     this.config = config || {};
     this.testMatrix = {};
 
@@ -31,6 +33,7 @@ class API {
     this.testsErrored = false;
 
     this.cwd = config.cwd || process.cwd();
+    this.abiOutputPath = config.abiOutputPath || "humanReadableAbis.json";
     this.matrixOutputPath = config.matrixOutputPath || "testMatrix.json";
     this.matrixReporterPath = config.matrixReporterPath || "solidity-coverage/plugins/resources/matrix.js"
 
@@ -357,6 +360,11 @@ class API {
     fs.writeFileSync(matrixPath, JSON.stringify(mapping, null, ' '));
   }
 
+  saveHumanReadableAbis(data){
+    const abiPath = path.join(this.cwd, this.abiOutputPath);
+    fs.writeFileSync(abiPath, JSON.stringify(data, null, ' '));
+  }
+
   // =====
   // Paths
   // =====
diff --git a/lib/validator.js b/lib/validator.js
index 1cf4f9ec..1e1fdf02 100644
--- a/lib/validator.js
+++ b/lib/validator.js
@@ -14,7 +14,9 @@ const configSchema = {
     client: {type: "object"},
     cwd:    {type: "string"},
     host:   {type: "string"},
-
+    abiOutputPath:      {type: "string"},
+    matrixOutputPath:   {type: "string"},
+    matrixReporterPath: {type: "string"},
     port:                 {type: "number"},
     providerOptions:      {type: "object"},
     silent:               {type: "boolean"},
diff --git a/package.json b/package.json
index 2b2b0df7..bf05beaa 100644
--- a/package.json
+++ b/package.json
@@ -24,11 +24,13 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "@ethersproject/abi": "^5.0.9",
     "@solidity-parser/parser": "^0.10.1",
     "@truffle/provider": "^0.2.24",
     "chalk": "^2.4.2",
     "death": "^1.1.0",
     "detect-port": "^1.3.0",
+    "difflib": "^0.2.4",
     "fs-extra": "^8.1.0",
     "ganache-cli": "^6.11.0",
     "ghost-testrpc": "^0.0.2",
diff --git a/plugins/resources/nomiclabs.utils.js b/plugins/resources/nomiclabs.utils.js
index f7a1958f..c8fb0b31 100644
--- a/plugins/resources/nomiclabs.utils.js
+++ b/plugins/resources/nomiclabs.utils.js
@@ -180,6 +180,35 @@ function collectTestMatrixData(args, env, api){
   }
 }
 
+/**
+ * Returns all Hardhat artifacts.
+ * @param  {HRE} env
+ * @return {Artifact[]}
+ */
+async function getAllArtifacts(env){
+  const all = [];
+  const qualifiedNames = await env.artifacts.getArtifactPaths();
+  for (const name of qualifiedNames){
+    all.push(await env.artifacts.readArtifact(name));
+  }
+  return all;
+}
+
+/**
+ * Compiles project
+ * Collects all artifacts from Hardhat project,
+ * Converts them to a format that can be consumed by api.abiUtils.diff
+ * Saves them to `api.abiOutputPath`
+ * @param  {HRE}    env
+ * @param  {SolidityCoverageAPI} api
+ */
+async function generateHumanReadableAbiList(env, api){
+  await env.run(TASK_COMPILE);
+  const _artifacts = getAllArtifacts(env);
+  const list = api.abiUtils.generateHumanReadableAbiList(_artifacts)
+  api.saveHumanReadableAbis(list);
+}
+
 /**
  * Sets the default `from` account field in the network that will be used.
  * This needs to be done after accounts are fetched from the launched client.
@@ -231,6 +260,7 @@ module.exports = {
   setupHardhatNetwork,
   getTestFilePaths,
   setNetworkFrom,
-  collectTestMatrixData
+  collectTestMatrixData,
+  getAllArtifacts
 }
 
diff --git a/plugins/resources/truffle.utils.js b/plugins/resources/truffle.utils.js
index 36d8b0bf..9f535ef0 100644
--- a/plugins/resources/truffle.utils.js
+++ b/plugins/resources/truffle.utils.js
@@ -35,6 +35,39 @@ async function getTestFilePaths(config){
   return target.filter(f => f.match(testregex) != null);
 }
 
+/**
+ * Returns all Truffle artifacts.
+ * @param  {TruffleConfig} config
+ * @return {Artifact[]}
+ */
+function getAllArtifacts(config){
+  const all = [];
+  const artifactsGlob = path.join(config.artifactsDir, '/**/*.json');
+  const files = globby.sync([artifactsGlob])
+  for (const file of files){
+    const candidate = require(file);
+    if (candidate.contractName && candidate.abi){
+      all.push(candidate);
+    }
+  }
+  return all;
+}
+
+/**
+ * Compiles project
+ * Collects all artifacts from Truffle project,
+ * Converts them to a format that can be consumed by api.abiUtils.diff
+ * Saves them to `api.abiOutputPath`
+ * @param  {TruffleConfig} config
+ * @param  {TruffleAPI}    truffle
+ * @param  {SolidityCoverageAPI} api
+ */
+async function generateHumanReadableAbiList(config, truffle, api){
+  await truffle.compile(config);
+  const _artifacts = getAllArtifacts(config);
+  const list = api.abiUtils.generateHumanReadableAbiList(_artifacts)
+  api.saveHumanReadableAbis(list);
+}
 
 /**
  * Configures the network. Runs before the server is launched.
diff --git a/test/sources/solidity/contracts/diff/addition.sol b/test/sources/solidity/contracts/diff/addition.sol
new file mode 100644
index 00000000..2820dd8e
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/addition.sol
@@ -0,0 +1,38 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint public y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint public y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+
+  function d() external {
+    bool x = true;
+  }
+}
+
diff --git a/test/sources/solidity/contracts/diff/events.sol b/test/sources/solidity/contracts/diff/events.sol
new file mode 100644
index 00000000..131828e6
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/events.sol
@@ -0,0 +1,23 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint y;
+
+  event Evt(uint x, bytes8 y);
+
+  function a() public {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  event aEvt(bytes8);
+  event _Evt(bytes8 x, bytes8 y);
+}
+
diff --git a/test/sources/solidity/contracts/diff/no-change.sol b/test/sources/solidity/contracts/diff/no-change.sol
new file mode 100644
index 00000000..7cc9ce23
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/no-change.sol
@@ -0,0 +1,34 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
diff --git a/test/sources/solidity/contracts/diff/param-change.sol b/test/sources/solidity/contracts/diff/param-change.sol
new file mode 100644
index 00000000..87a048e0
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/param-change.sol
@@ -0,0 +1,33 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b(bytes8 z) external {
+    bool x = true;
+  }
+
+  function c(uint q, uint r) external {
+    bool x = true;
+  }
+}
diff --git a/test/sources/solidity/contracts/diff/removal.sol b/test/sources/solidity/contracts/diff/removal.sol
new file mode 100644
index 00000000..53a29e4b
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/removal.sol
@@ -0,0 +1,29 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+}
diff --git a/test/sources/solidity/contracts/diff/reorder.sol b/test/sources/solidity/contracts/diff/reorder.sol
new file mode 100644
index 00000000..ff9e8c91
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/reorder.sol
@@ -0,0 +1,33 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  uint y;
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+
+  function c() external {
+    bool x = true;
+  }
+}
+
+contract New {
+  uint y;
+
+  function c() external {
+    bool x = true;
+  }
+
+  function a() public {
+    bool x = true;
+  }
+
+  function b() external {
+    bool x = true;
+  }
+}
diff --git a/test/sources/solidity/contracts/diff/return-sig.sol b/test/sources/solidity/contracts/diff/return-sig.sol
new file mode 100644
index 00000000..b49cce68
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/return-sig.sol
@@ -0,0 +1,25 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  function a() public view returns (uint) {
+    return 1;
+  }
+}
+
+contract New {
+  function a() public view returns (bool) {
+    return true;
+  }
+
+  function e() public view returns (uint8[2] memory) {
+    return [5,7];
+  }
+
+  function f() public view returns (uint8[2] memory, uint) {
+    return ([5,7], 7);
+  }
+
+  function g() public view returns (uint8[3] memory) {
+    return [5,7,8];
+  }
+}
diff --git a/test/sources/solidity/contracts/diff/state-mod-change.sol b/test/sources/solidity/contracts/diff/state-mod-change.sol
new file mode 100644
index 00000000..36a451cc
--- /dev/null
+++ b/test/sources/solidity/contracts/diff/state-mod-change.sol
@@ -0,0 +1,13 @@
+pragma solidity ^0.7.0;
+
+contract Old {
+  function a() public {
+    bool x = true;
+  }
+}
+
+contract New {
+  function a() public view returns (bool) {
+    return true;
+  }
+}
diff --git a/test/units/diff.js b/test/units/diff.js
new file mode 100644
index 00000000..3b184acb
--- /dev/null
+++ b/test/units/diff.js
@@ -0,0 +1,128 @@
+const assert = require('assert');
+const util = require('./../util/util.js');
+const Api = require('./../../lib/api')
+
+describe('abi diffs', function(){
+  const api = new Api();
+
+  function setUp(source){
+    const abis = util.getDiffABIs(source);
+    const orig = api.abiUtils.generateHumanReadableAbiList([abis.original], abis.original.sha);
+    const cur = api.abiUtils.generateHumanReadableAbiList([abis.current], abis.current.sha);
+    return api.abiUtils.diff(orig[0], cur[0]);
+  }
+
+  function validate(result, expectPlus, expectMinus, expectDiff){
+    assert.equal(result.plus, expectPlus);
+    assert.equal(result.minus, expectMinus);
+    assert.deepEqual(result.unifiedDiff, expectDiff);
+  }
+
+  it('when methods are added', function() {
+    const expectPlus = 1;
+    const expectMinus = 0;
+    const expectDiff = [
+      "--- Test\tsha: d8b26d8",
+      "+++ Test\tsha: e77e29d",
+      "@@ -1,4 +1,5 @@",
+      " function a() nonpayable",
+      " function b() nonpayable",
+      " function c() nonpayable",
+      "+function d() nonpayable",
+      " function y() view returns (uint256)"
+    ];
+
+    validate(setUp('diff/addition'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when there are events', function() {
+    const expectPlus = 2;
+    const expectMinus = 1;
+    const expectDiff = [
+      "--- Test\tsha: d8b26d8",
+      "+++ Test\tsha: e77e29d",
+      "@@ -1,2 +1,3 @@",
+      " function a() nonpayable",
+      "-event Evt(uint256,bytes8)",
+      "+event _Evt(bytes8,bytes8)",
+      "+event aEvt(bytes8)"
+    ];
+
+    validate(setUp('diff/events'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when parameters change', function() {
+    const expectPlus = 2;
+    const expectMinus = 2;
+    const expectDiff = [
+      "--- Test\tsha: d8b26d8",
+      "+++ Test\tsha: e77e29d",
+      "@@ -1,3 +1,3 @@",
+      " function a() nonpayable",
+      "-function b() nonpayable",
+      "-function c() nonpayable",
+      "+function b(bytes8) nonpayable",
+      "+function c(uint256,uint256) nonpayable"
+    ];
+
+    validate(setUp('diff/param-change'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when there is no change', function() {
+    const expectPlus = 0;
+    const expectMinus = 0;
+    const expectDiff = [];
+    validate(setUp('diff/no-change'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when methods are removed', function() {
+    const expectPlus = 0;
+    const expectMinus = 1;
+    const expectDiff = [
+      '--- Test\tsha: d8b26d8',
+      '+++ Test\tsha: e77e29d',
+      '@@ -1,3 +1,2 @@',
+      ' function a() nonpayable',
+      ' function b() nonpayable',
+      '-function c() nonpayable'
+    ];
+
+    validate(setUp('diff/removal'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when methods are reordered', function() {
+    const expectPlus = 0;
+    const expectMinus = 0;
+    const expectDiff = [];
+    validate(setUp('diff/reorder'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when return signatures change', function() {
+    const expectPlus = 4;
+    const expectMinus = 1;
+    const expectDiff = [
+      '--- Test\tsha: d8b26d8',
+      '+++ Test\tsha: e77e29d',
+      '@@ -1 +1,4 @@',
+      '-function a() view returns (uint256)',
+      '+function a() view returns (bool)',
+      '+function e() view returns (uint8[2])',
+      '+function f() view returns (uint8[2], uint256)',
+      '+function g() view returns (uint8[3])'
+    ];
+    validate(setUp('diff/return-sig'), expectPlus, expectMinus, expectDiff);
+  });
+
+  it('when state modifiablility changes', function() {
+    const expectPlus = 1;
+    const expectMinus = 1;
+    const expectDiff = [
+      '--- Test\tsha: d8b26d8',
+      '+++ Test\tsha: e77e29d',
+      '@@ -1 +1 @@',
+      '-function a() nonpayable',
+      '+function a() view returns (bool)'
+    ];
+    validate(setUp('diff/state-mod-change'), expectPlus, expectMinus, expectDiff);
+  });
+});
diff --git a/test/units/validator.js b/test/units/validator.js
index 1cb74c0e..2479aed7 100644
--- a/test/units/validator.js
+++ b/test/units/validator.js
@@ -22,7 +22,9 @@ describe('config validation', () => {
     const options =  [
       "cwd",
       "host",
-      "istanbulFolder"
+      "istanbulFolder",
+      "abiOutputPath",
+      "matrixOutputPath",
     ]
 
     options.forEach(name => {
diff --git a/test/util/integration.js b/test/util/integration.js
index 6a9b70ac..d6fdcc46 100644
--- a/test/util/integration.js
+++ b/test/util/integration.js
@@ -50,7 +50,6 @@ function decacheConfigs(){
 
 function clean() {
   shell.config.silent = true;
-
   shell.rm('-Rf', temp);
   shell.rm('-Rf', 'coverage');
   shell.rm('coverage.json');
diff --git a/test/util/util.js b/test/util/util.js
index aa306a9d..2e0ba91e 100644
--- a/test/util/util.js
+++ b/test/util/util.js
@@ -68,6 +68,26 @@ function codeToCompilerInput(code) {
   });
 }
 
+// ===========
+// Diff tests
+// ===========
+function getDiffABIs(sourceName, testFile="test.sol", original="Old", current="New"){
+  const contract = getCode(`${sourceName}.sol`)
+  const solcOutput = compile(contract)
+  return {
+    original: {
+      contractName: "Test",
+      sha: "d8b26d8",
+      abi: solcOutput.contracts[testFile][original].abi,
+    },
+    current: {
+      contractName: "Test",
+      sha: "e77e29d",
+      abi: solcOutput.contracts[testFile][current].abi,
+    }
+  }
+}
+
 // ============================
 // Instrumentation Correctness
 // ============================
@@ -118,11 +138,12 @@ function initializeProvider(ganache){
 }
 
 module.exports = {
-  getCode: getCode,
-  pathPrefix: pathPrefix,
-  filePath: filePath,
-  report: report,
-  instrumentAndCompile: instrumentAndCompile,
-  bootstrapCoverage: bootstrapCoverage,
-  initializeProvider: initializeProvider,
+  getCode,
+  pathPrefix,
+  filePath,
+  report,
+  instrumentAndCompile,
+  bootstrapCoverage,
+  initializeProvider,
+  getDiffABIs
 }
diff --git a/yarn.lock b/yarn.lock
index f0207cef..e9445f29 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -108,6 +108,45 @@
     "@ethersproject/properties" ">=5.0.0-beta.131"
     "@ethersproject/strings" ">=5.0.0-beta.130"
 
+"@ethersproject/abi@^5.0.9":
+  version "5.0.9"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.0.9.tgz#738c1c557e56d8f395a5a27caef9b0449bc85a10"
+  integrity sha512-ily2OufA2DTrxkiHQw5GqbkMSnNKuwZBqKsajtT0ERhZy1r9w2CpW1bmtRMIGzaqQxCdn/GEoFogexk72cBBZQ==
+  dependencies:
+    "@ethersproject/address" "^5.0.4"
+    "@ethersproject/bignumber" "^5.0.7"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/constants" "^5.0.4"
+    "@ethersproject/hash" "^5.0.4"
+    "@ethersproject/keccak256" "^5.0.3"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/properties" "^5.0.3"
+    "@ethersproject/strings" "^5.0.4"
+
+"@ethersproject/abstract-provider@^5.0.4":
+  version "5.0.7"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.0.7.tgz#04ee3bfe43323384e7fecf6c774975b8dec4bdc9"
+  integrity sha512-NF16JGn6M0zZP5ZS8KtDL2Rh7yHxZbUjBIHLNHMm/0X0BephhjUWy8jqs/Zks6kDJRzNthgmPVy41Ec0RYWPYA==
+  dependencies:
+    "@ethersproject/bignumber" "^5.0.7"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/networks" "^5.0.3"
+    "@ethersproject/properties" "^5.0.3"
+    "@ethersproject/transactions" "^5.0.5"
+    "@ethersproject/web" "^5.0.6"
+
+"@ethersproject/abstract-signer@^5.0.6":
+  version "5.0.9"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.0.9.tgz#238ddc06031aeb9dfceee2add965292d7dd1acbf"
+  integrity sha512-CM5UNmXQaA03MyYARFDDRjHWBxujO41tVle7glf5kHcQsDDULgqSVpkliLJMtPzZjOKFeCVZBHybTZDEZg5zzg==
+  dependencies:
+    "@ethersproject/abstract-provider" "^5.0.4"
+    "@ethersproject/bignumber" "^5.0.7"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/properties" "^5.0.3"
+
 "@ethersproject/address@>=5.0.0-beta.128":
   version "5.0.0-beta.134"
   resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.0.0-beta.134.tgz#9c1790c87b763dc547ac12e2dbc9fa78d0799a71"
@@ -130,6 +169,24 @@
     "@ethersproject/rlp" "^5.0.3"
     bn.js "^4.4.0"
 
+"@ethersproject/address@^5.0.5":
+  version "5.0.8"
+  resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.0.8.tgz#0c551659144a5a7643c6bea337149d410825298f"
+  integrity sha512-V87DHiZMZR6hmFYmoGaHex0D53UEbZpW75uj8AqPbjYUmi65RB4N2LPRcJXuWuN2R0Y2CxkvW6ArijWychr5FA==
+  dependencies:
+    "@ethersproject/bignumber" "^5.0.10"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/keccak256" "^5.0.3"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/rlp" "^5.0.3"
+
+"@ethersproject/base64@^5.0.3":
+  version "5.0.6"
+  resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.0.6.tgz#26311ebf29ea3d0b9c300ccf3e1fdc44b7481516"
+  integrity sha512-HwrGn8YMiUf7bcdVvB4NJ+eWT0BtEFpDtrYxVXEbR7p/XBSJjwiR7DEggIiRvxbualMKg+EZijQWJ3az2li0uw==
+  dependencies:
+    "@ethersproject/bytes" "^5.0.4"
+
 "@ethersproject/bignumber@>=5.0.0-beta.130":
   version "5.0.0-beta.138"
   resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.0.0-beta.138.tgz#a635f2f9a6f1b262cc38e1c7ee561fb13d79fda4"
@@ -139,6 +196,15 @@
     "@ethersproject/properties" ">=5.0.0-beta.131"
     bn.js "^4.4.0"
 
+"@ethersproject/bignumber@^5.0.10", "@ethersproject/bignumber@^5.0.8":
+  version "5.0.12"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.0.12.tgz#fe4a78667d7cb01790f75131147e82d6ea7e7cba"
+  integrity sha512-mbFZjwthx6vFlHG9owXP/C5QkNvsA+xHpDCkPPPdG2n1dS9AmZAL5DI0InNLid60rQWL3MXpEl19tFmtL7Q9jw==
+  dependencies:
+    "@ethersproject/bytes" "^5.0.8"
+    "@ethersproject/logger" "^5.0.5"
+    bn.js "^4.4.0"
+
 "@ethersproject/bignumber@^5.0.7":
   version "5.0.8"
   resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.0.8.tgz#cee33bd8eb0266176def0d371b45274b1d2c4ec0"
@@ -159,6 +225,13 @@
   dependencies:
     "@ethersproject/logger" "^5.0.5"
 
+"@ethersproject/bytes@^5.0.8":
+  version "5.0.8"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.0.8.tgz#cf1246a6a386086e590063a4602b1ffb6cc43db1"
+  integrity sha512-O+sJNVGzzuy51g+EMK8BegomqNIg+C2RO6vOt0XP6ac4o4saiq69FnjlsrNslaiMFVO7qcEHBsWJ9hx1tj1lMw==
+  dependencies:
+    "@ethersproject/logger" "^5.0.5"
+
 "@ethersproject/constants@>=5.0.0-beta.128":
   version "5.0.0-beta.133"
   resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.0.0-beta.133.tgz#af4ccd7232f3ed73aebe066a695ede32c497a394"
@@ -180,6 +253,20 @@
     "@ethersproject/logger" ">=5.0.0-beta.129"
     "@ethersproject/strings" ">=5.0.0-beta.130"
 
+"@ethersproject/hash@^5.0.4":
+  version "5.0.9"
+  resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.0.9.tgz#81252a848185b584aa600db4a1a68cad9229a4d4"
+  integrity sha512-e8/i2ZDeGSgCxXT0vocL54+pMbw5oX5fNjb2E3bAIvdkh5kH29M7zz1jHu1QDZnptIuvCZepIbhUH8lxKE2/SQ==
+  dependencies:
+    "@ethersproject/abstract-signer" "^5.0.6"
+    "@ethersproject/address" "^5.0.5"
+    "@ethersproject/bignumber" "^5.0.8"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/keccak256" "^5.0.3"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/properties" "^5.0.4"
+    "@ethersproject/strings" "^5.0.4"
+
 "@ethersproject/keccak256@>=5.0.0-beta.127":
   version "5.0.0-beta.131"
   resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.0.0-beta.131.tgz#b5778723ee75208065b9b9ad30c71d480f41bb31"
@@ -202,6 +289,13 @@
   version "5.0.6"
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.0.6.tgz#faa484203e86e08be9e07fef826afeef7183fe88"
 
+"@ethersproject/networks@^5.0.3":
+  version "5.0.6"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.0.6.tgz#4d6586bbebfde1c027504ebf6dfb783b29c3803a"
+  integrity sha512-2Cg1N5109zzFOBfkyuPj+FfF7ioqAsRffmybJ2lrsiB5skphIAE72XNSCs4fqktlf+rwSh/5o/UXRjXxvSktZw==
+  dependencies:
+    "@ethersproject/logger" "^5.0.5"
+
 "@ethersproject/properties@>=5.0.0-beta.131":
   version "5.0.0-beta.139"
   resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.0.0-beta.139.tgz#b56c494bbeb47b2d1bab95a52bbf1ee0a8040274"
@@ -214,6 +308,13 @@
   dependencies:
     "@ethersproject/logger" "^5.0.5"
 
+"@ethersproject/properties@^5.0.4":
+  version "5.0.6"
+  resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.0.6.tgz#44d82aaa294816fd63333e7def42426cf0e87b3b"
+  integrity sha512-a9DUMizYhJ0TbtuDkO9iYlb2CDlpSKqGPDr+amvlZhRspQ6jbl5Eq8jfu4SCcGlcfaTbguJmqGnyOGn1EFt6xA==
+  dependencies:
+    "@ethersproject/logger" "^5.0.5"
+
 "@ethersproject/rlp@>=5.0.0-beta.126":
   version "5.0.0-beta.132"
   resolved "https://registry.yarnpkg.com/@ethersproject/rlp/-/rlp-5.0.0-beta.132.tgz#f7d31e0ee8792180ffd5c73969aa5b2f8804e967"
@@ -245,6 +346,15 @@
     "@ethersproject/constants" ">=5.0.0-beta.128"
     "@ethersproject/logger" ">=5.0.0-beta.129"
 
+"@ethersproject/strings@^5.0.4":
+  version "5.0.7"
+  resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.0.7.tgz#8dc68f794c9e2901f3b75e53b2afbcb6b6c15037"
+  integrity sha512-a+6T80LvmXGMOOWQTZHtGGQEg1z4v8rm8oX70KNs55YtPXI/5J3LBbVf5pyqCKSlmiBw5IaepPvs5XGalRUSZQ==
+  dependencies:
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/constants" "^5.0.4"
+    "@ethersproject/logger" "^5.0.5"
+
 "@ethersproject/transactions@^5.0.0-beta.135":
   version "5.0.6"
   resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.0.6.tgz#b8b27938be6e9ed671dbdd35fe98af8b14d0df7c"
@@ -259,6 +369,32 @@
     "@ethersproject/rlp" "^5.0.3"
     "@ethersproject/signing-key" "^5.0.4"
 
+"@ethersproject/transactions@^5.0.5":
+  version "5.0.8"
+  resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.0.8.tgz#3b4d7041e13b957a9c4f131e0aea9dae7b6f5a23"
+  integrity sha512-i7NtOXVzUe+YSU6QufzlRrI2WzHaTmULAKHJv4duIZMLqzehCBXGA9lTpFgFdqGYcQJ7vOtNFC2BB2mSjmuXqg==
+  dependencies:
+    "@ethersproject/address" "^5.0.4"
+    "@ethersproject/bignumber" "^5.0.7"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/constants" "^5.0.4"
+    "@ethersproject/keccak256" "^5.0.3"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/properties" "^5.0.3"
+    "@ethersproject/rlp" "^5.0.3"
+    "@ethersproject/signing-key" "^5.0.4"
+
+"@ethersproject/web@^5.0.6":
+  version "5.0.11"
+  resolved "https://registry.yarnpkg.com/@ethersproject/web/-/web-5.0.11.tgz#d47da612b958b4439e415782a53c8f8461522d68"
+  integrity sha512-x03ihbPoN1S8Gsh9WSwxkYxUIumLi02ZEKJku1C43sxBfe+mdprWyvujzYlpuoRNfWRgNhdRDKMP8JbG6MwNGA==
+  dependencies:
+    "@ethersproject/base64" "^5.0.3"
+    "@ethersproject/bytes" "^5.0.4"
+    "@ethersproject/logger" "^5.0.5"
+    "@ethersproject/properties" "^5.0.3"
+    "@ethersproject/strings" "^5.0.4"
+
 "@nodelib/fs.scandir@2.1.2":
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.2.tgz#1f981cd5b83e85cfdeb386fc693d4baab392fa54"
@@ -1898,6 +2034,13 @@ diffie-hellman@^5.0.0:
     miller-rabin "^4.0.0"
     randombytes "^2.0.0"
 
+difflib@^0.2.4:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/difflib/-/difflib-0.2.4.tgz#b5e30361a6db023176d562892db85940a718f47e"
+  integrity sha1-teMDYabbAjF21WKJLbhZQKcY9H4=
+  dependencies:
+    heap ">= 0.2.0"
+
 dir-glob@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/dir-glob/-/dir-glob-3.0.1.tgz#56dbf73d992a4a93ba1584f4534063fd2e41717f"
@@ -3344,6 +3487,11 @@ he@1.2.0, he@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
 
+"heap@>= 0.2.0":
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/heap/-/heap-0.2.6.tgz#087e1f10b046932fc8594dd9e6d378afc9d1e5ac"
+  integrity sha1-CH4fELBGky/IWU3Z5tN4r8nR5aw=
+
 highlight.js@^9.12.0, highlight.js@^9.15.8:
   version "9.18.3"
   resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.18.3.tgz#a1a0a2028d5e3149e2380f8a865ee8516703d634"