Jest config (#10855)

* Setup jest config

* Adjust test for jest.

* Adjust lint config

* Omit swaps ui folder for unit testing

* Omit swaps from test:unit:lax

* Add jest.config.js to script files

* Restore mocks rather than clearing them.

* Update jest config and adjust lint to include subdirs

* Convert view-quote-price-difference test to jest

* Add jest ci and ci coverage scripts. Add jest unit test to general test command

* Add test coverage to ci

* Use --ignore flag

* Fixup

* Add @metamask/eslint-config-jest

* Update .eslintrc.js

Co-authored-by: Mark Stacey <markjstacey@gmail.com>

* Adds jest-coverage/

Co-authored-by: Mark Stacey <markjstacey@gmail.com>

.circleci/config.yml

@@ -444,6 +444,9 @@ jobs:
       - store_artifacts:
           path: coverage
           destination: coverage
+      - store_artifacts:
+          path: jest-coverage
+          destination: jest-coverage
       - store_artifacts:
           path: test-artifacts
           destination: test-artifacts
@@ -501,11 +504,15 @@ jobs:
       - run:
           name: test:coverage
           command: yarn test:coverage
+      - run:
+          name: test:coverage:jest
+          command: yarn test:coverage:jest
       - persist_to_workspace:
           root: .
           paths:
             - .nyc_output
             - coverage
+            - jest-coverage
   test-unit-global:
     executor: node-browsers
     steps:

.eslintrc.js

@@ -26,6 +26,7 @@ module.exports = {
     'test-*/**',
     'docs/**',
     'coverage/',
+    'jest-coverage/',
     'development/chromereload.js',
     'app/vendor/**',
     'test/e2e/send-eth-with-private-key-test/**',
@@ -107,11 +108,16 @@ module.exports = {
     },
     {
       files: ['**/*.test.js'],
+      excludedFiles: ['ui/app/pages/swaps/**/*.test.js'],
       extends: ['@metamask/eslint-config-mocha'],
       rules: {
         'mocha/no-setup-in-describe': 'off',
       },
     },
+    {
+      files: ['ui/app/pages/swaps/**/*.test.js'],
+      extends: ['@metamask/eslint-config-jest'],
+    },
     {
       files: [
         'development/**/*.js',
@@ -135,6 +141,7 @@ module.exports = {
         'test/lib/wait-until-called.js',
         'test/env.js',
         'test/setup.js',
+        'jest.config.js',
       ],
       parserOptions: {
         sourceType: 'script',

.gitignore

@@ -29,6 +29,7 @@ app/.DS_Store
 
 storybook-build/
 coverage/
+jest-coverage/
 dist
 builds/
 builds.zip

jest.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  restoreMocks: true,
+  coverageDirectory: 'jest-coverage/',
+  setupFiles: ['./test/setup.js', './test/env.js'],
+  testMatch: ['**/ui/app/pages/swaps/**/?(*.)+(test).js'],
+};

package.json

@@ -14,15 +14,17 @@
     "benchmark:firefox": "SELENIUM_BROWSER=firefox node test/e2e/benchmark.js",
     "build:test": "yarn build test",
     "build:test:metrics": "SEGMENT_HOST='http://localhost:9090' SEGMENT_WRITE_KEY='FAKE' SEGMENT_LEGACY_WRITE_KEY='FAKE' yarn build test",
-    "test": "yarn test:unit && yarn lint",
+    "test": "yarn lint && yarn test:unit && yarn test:unit:jest",
     "dapp": "node development/static-server.js node_modules/@metamask/test-dapp/dist --port 8080",
     "dapp-chain": "GANACHE_ARGS='-b 2' concurrently -k -n ganache,dapp -p '[{time}][{name}]' 'yarn ganache:start' 'sleep 5 && yarn dapp'",
     "forwarder": "node ./development/static-server.js ./node_modules/@metamask/forwarder/dist/ --port 9010",
     "dapp-forwarder": "concurrently -k -n forwarder,dapp -p '[{time}][{name}]' 'yarn forwarder' 'yarn dapp'",
     "sendwithprivatedapp": "node development/static-server.js test/e2e/send-eth-with-private-key-test --port 8080",
-    "test:unit": "mocha --exit --require test/env.js --require test/setup.js --recursive './{ui,app,shared}/**/*.test.js'",
+    "test:unit": "mocha --exit --require test/env.js --require test/setup.js  --ignore './ui/app/pages/swaps/**/*.test.js' --recursive './{ui,app,shared}/**/*.test.js'",
     "test:unit:global": "mocha --exit --require test/env.js --require test/setup.js --recursive test/unit-global/*.test.js",
-    "test:unit:lax": "mocha --exit --require test/env.js --require test/setup.js --ignore './app/scripts/controllers/permissions/*.test.js' --recursive './{ui,app,shared}/**/*.test.js'",
+    "test:unit:jest": "jest",
+    "test:unit:jest:ci": "jest --maxWorkers=2",
+    "test:unit:lax": "mocha --exit --require test/env.js --require test/setup.js --ignore './app/scripts/controllers/permissions/*.test.js' --ignore './ui/app/pages/swaps/**/*.test.js' --recursive './{ui,app,shared}/**/*.test.js'",
     "test:unit:strict": "mocha --exit --require test/env.js --require test/setup.js --recursive './app/scripts/controllers/permissions/*.test.js'",
     "test:unit:path": "mocha --exit --require test/env.js --require test/setup.js --recursive",
     "test:e2e:chrome": "SELENIUM_BROWSER=chrome test/e2e/run-all.sh",
@@ -30,6 +32,7 @@
     "test:e2e:firefox": "SELENIUM_BROWSER=firefox test/e2e/run-all.sh",
     "test:e2e:firefox:metrics": "SELENIUM_BROWSER=firefox mocha test/e2e/metrics.spec.js",
     "test:coverage": "nyc --silent --check-coverage yarn test:unit:strict && nyc --silent --no-clean yarn test:unit:lax && nyc report --reporter=text --reporter=html",
+    "test:coverage:jest": "jest --coverage --maxWorkers=2 --collectCoverageFrom=**/ui/app/pages/swaps/**",
     "test:coverage:strict": "nyc --check-coverage yarn test:unit:strict",
     "test:coverage:path": "nyc --check-coverage yarn test:unit:path",
     "ganache:start": "./development/run-ganache.sh",
@@ -201,6 +204,7 @@
     "@babel/register": "^7.5.5",
     "@lavamoat/allow-scripts": "^1.0.4",
     "@metamask/eslint-config": "^6.0.0",
+    "@metamask/eslint-config-jest": "^6.0.0",
     "@metamask/eslint-config-mocha": "^6.0.0",
     "@metamask/eslint-config-nodejs": "^6.0.0",
     "@metamask/forwarder": "^1.1.0",
@@ -233,6 +237,7 @@
     "eslint": "^7.23.0",
     "eslint-config-prettier": "^8.1.0",
     "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-jest": "^24.3.4",
     "eslint-plugin-mocha": "^8.1.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.3.1",

ui/app/pages/swaps/swaps.util.test.js

@@ -1,11 +1,6 @@
-import { strict as assert } from 'assert';
+import nock from 'nock';
-import proxyquire from 'proxyquire';
 import { MAINNET_CHAIN_ID } from '../../../../shared/constants/network';
 import {
-  TRADES_BASE_PROD_URL,
-  TOKENS_BASE_PROD_URL,
-  AGGREGATOR_METADATA_BASE_PROD_URL,
-  TOP_ASSET_BASE_PROD_URL,
   TOKENS,
   EXPECTED_TOKENS_RESULT,
   MOCK_TRADE_RESPONSE_2,
@@ -13,42 +8,24 @@ import {
   TOP_ASSETS,
 } from './swaps-util-test-constants';
 
-const swapsUtils = proxyquire('./swaps.util.js', {
+import {
-  '../../helpers/utils/fetch-with-cache': {
-    default: (url, fetchObject) => {
-      assert.strictEqual(fetchObject.method, 'GET');
-      if (url.match(TRADES_BASE_PROD_URL)) {
-        assert.strictEqual(
-          url,
-          'https://api.metaswap.codefi.network/trades?destinationToken=0xE41d2489571d322189246DaFA5ebDe1F4699F498&sourceToken=0x617b3f8050a0BD94b6b1da02B4384eE5B4DF13F4&sourceAmount=2000000000000000000000000000000000000&slippage=3&timeout=10000&walletAddress=0xmockAddress',
-        );
-        return Promise.resolve(MOCK_TRADE_RESPONSE_2);
-      }
-      if (url.match(TOKENS_BASE_PROD_URL)) {
-        assert.strictEqual(url, TOKENS_BASE_PROD_URL);
-        return Promise.resolve(TOKENS);
-      }
-      if (url.match(AGGREGATOR_METADATA_BASE_PROD_URL)) {
-        assert.strictEqual(url, AGGREGATOR_METADATA_BASE_PROD_URL);
-        return Promise.resolve(AGGREGATOR_METADATA);
-      }
-      if (url.match(TOP_ASSET_BASE_PROD_URL)) {
-        assert.strictEqual(url, TOP_ASSET_BASE_PROD_URL);
-        return Promise.resolve(TOP_ASSETS);
-      }
-      return Promise.resolve();
-    },
-  },
-});
-const {
   fetchTradesInfo,
   fetchTokens,
   fetchAggregatorMetadata,
   fetchTopAssets,
-} = swapsUtils;
+} from './swaps.util';
 
-describe('Swaps Util', function () {
+jest.mock('../../../lib/storage-helpers.js', () => ({
-  describe('fetchTradesInfo', function () {
+  getStorageItem: jest.fn(),
+  setStorageItem: jest.fn(),
+}));
+
+describe('Swaps Util', () => {
+  afterEach(() => {
+    nock.cleanAll();
+  });
+
+  describe('fetchTradesInfo', () => {
     const expectedResult1 = {
       zeroEx: {
         trade: {
@@ -90,7 +67,12 @@ describe('Swaps Util', function () {
         sourceAmount: '20000000000000000',
       },
     };
-    it('should fetch trade info on prod', async function () {
+    it('should fetch trade info on prod', async () => {
+      nock('https://api.metaswap.codefi.network')
+        .get('/trades')
+        .query(true)
+        .reply(200, MOCK_TRADE_RESPONSE_2);
+
       const result = await fetchTradesInfo(
         {
           TOKENS,
@@ -106,35 +88,53 @@ describe('Swaps Util', function () {
         },
         { chainId: MAINNET_CHAIN_ID },
       );
-      assert.deepStrictEqual(result, expectedResult2);
+      expect(result).toStrictEqual(expectedResult2);
     });
   });
 
-  describe('fetchTokens', function () {
+  describe('fetchTokens', () => {
-    it('should fetch tokens', async function () {
+    beforeEach(() => {
+      nock('https://api.metaswap.codefi.network')
+        .get('/tokens')
+        .reply(200, TOKENS);
+    });
+
+    it('should fetch tokens', async () => {
       const result = await fetchTokens(MAINNET_CHAIN_ID);
-      assert.deepStrictEqual(result, EXPECTED_TOKENS_RESULT);
+      expect(result).toStrictEqual(EXPECTED_TOKENS_RESULT);
     });
 
-    it('should fetch tokens on prod', async function () {
+    it('should fetch tokens on prod', async () => {
       const result = await fetchTokens(MAINNET_CHAIN_ID);
-      assert.deepStrictEqual(result, EXPECTED_TOKENS_RESULT);
+      expect(result).toStrictEqual(EXPECTED_TOKENS_RESULT);
     });
   });
 
-  describe('fetchAggregatorMetadata', function () {
+  describe('fetchAggregatorMetadata', () => {
-    it('should fetch aggregator metadata', async function () {
+    beforeEach(() => {
-      const result = await fetchAggregatorMetadata(MAINNET_CHAIN_ID);
+      nock('https://api.metaswap.codefi.network')
-      assert.deepStrictEqual(result, AGGREGATOR_METADATA);
+        .get('/aggregatorMetadata')
+        .reply(200, AGGREGATOR_METADATA);
     });
 
-    it('should fetch aggregator metadata on prod', async function () {
+    it('should fetch aggregator metadata', async () => {
       const result = await fetchAggregatorMetadata(MAINNET_CHAIN_ID);
-      assert.deepStrictEqual(result, AGGREGATOR_METADATA);
+      expect(result).toStrictEqual(AGGREGATOR_METADATA);
+    });
+
+    it('should fetch aggregator metadata on prod', async () => {
+      const result = await fetchAggregatorMetadata(MAINNET_CHAIN_ID);
+      expect(result).toStrictEqual(AGGREGATOR_METADATA);
     });
   });
 
-  describe('fetchTopAssets', function () {
+  describe('fetchTopAssets', () => {
+    beforeEach(() => {
+      nock('https://api.metaswap.codefi.network')
+        .get('/topAssets')
+        .reply(200, TOP_ASSETS);
+    });
+
     const expectedResult = {
       '0x514910771af9ca656af840dff83e8264ecf986ca': {
         index: '0',
@@ -152,14 +152,14 @@ describe('Swaps Util', function () {
         index: '4',
       },
     };
-    it('should fetch top assets', async function () {
+    it('should fetch top assets', async () => {
       const result = await fetchTopAssets(MAINNET_CHAIN_ID);
-      assert.deepStrictEqual(result, expectedResult);
+      expect(result).toStrictEqual(expectedResult);
     });
 
-    it('should fetch top assets on prod', async function () {
+    it('should fetch top assets on prod', async () => {
       const result = await fetchTopAssets(MAINNET_CHAIN_ID);
-      assert.deepStrictEqual(result, expectedResult);
+      expect(result).toStrictEqual(expectedResult);
     });
   });
 });

ui/app/pages/swaps/view-quote/view-quote-price-difference.test.js

@@ -1,4 +1,3 @@
-import assert from 'assert';
 import React from 'react';
 import { shallow } from 'enzyme';
 import { Provider } from 'react-redux';
@@ -6,7 +5,7 @@ import configureMockStore from 'redux-mock-store';
 import { NETWORK_TYPE_RPC } from '../../../../../shared/constants/network';
 import ViewQuotePriceDifference from './view-quote-price-difference';
 
-describe('View Price Quote Difference', function () {
+describe('View Price Quote Difference', () => {
   const t = (key) => `translate ${key}`;
 
   const state = {
@@ -98,21 +97,21 @@ describe('View Price Quote Difference', function () {
     );
   }
 
-  afterEach(function () {
+  afterEach(() => {
     component.unmount();
   });
 
-  it('does not render when there is no quote', function () {
+  it('does not render when there is no quote', () => {
     const props = { ...DEFAULT_PROPS, usedQuote: null };
     renderComponent(props);
 
     const wrappingDiv = component.find(
       '.view-quote__price-difference-warning-wrapper',
     );
-    assert.strictEqual(wrappingDiv.length, 0);
+    expect(wrappingDiv).toHaveLength(0);
   });
 
-  it('does not render when the item is in the low bucket', function () {
+  it('does not render when the item is in the low bucket', () => {
     const props = { ...DEFAULT_PROPS };
     props.usedQuote.priceSlippage.bucket = 'low';
 
@@ -120,31 +119,31 @@ describe('View Price Quote Difference', function () {
     const wrappingDiv = component.find(
       '.view-quote__price-difference-warning-wrapper',
     );
-    assert.strictEqual(wrappingDiv.length, 0);
+    expect(wrappingDiv).toHaveLength(0);
   });
 
-  it('displays an error when in medium bucket', function () {
+  it('displays an error when in medium bucket', () => {
     const props = { ...DEFAULT_PROPS };
     props.usedQuote.priceSlippage.bucket = 'medium';
 
     renderComponent(props);
-    assert.strictEqual(component.html().includes('medium'), true);
+    expect(component.html()).toContain('medium');
   });
 
-  it('displays an error when in high bucket', function () {
+  it('displays an error when in high bucket', () => {
     const props = { ...DEFAULT_PROPS };
     props.usedQuote.priceSlippage.bucket = 'high';
 
     renderComponent(props);
-    assert.strictEqual(component.html().includes('high'), true);
+    expect(component.html()).toContain('high');
   });
 
-  it('displays a fiat error when calculationError is present', function () {
+  it('displays a fiat error when calculationError is present', () => {
     const props = { ...DEFAULT_PROPS, priceSlippageUnknownFiatValue: true };
     props.usedQuote.priceSlippage.calculationError =
       'Could not determine price.';
 
     renderComponent(props);
-    assert.strictEqual(component.html().includes('fiat-error'), true);
+    expect(component.html()).toContain('fiat-error');
   });
 });

yarn.lock

@@ -2689,6 +2689,11 @@
     web3 "^0.20.7"
     web3-provider-engine "^16.0.1"
 
+"@metamask/eslint-config-jest@^6.0.0":
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/@metamask/eslint-config-jest/-/eslint-config-jest-6.0.0.tgz#9e10cfbca31236afd7be2058be70365084e540d6"
+  integrity sha512-C0sXmyp5Hnp5IHVYXaW2TJAo/E9UiS192CwyUcw2qU1Ck7lj4z/wHdgROaH5F6rInqBO3afkDaqnArqvoxvO5Q==
+
 "@metamask/eslint-config-mocha@^6.0.0":
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/@metamask/eslint-config-mocha/-/eslint-config-mocha-6.0.0.tgz#407fc07d4bdfbc79b64989fa9a56a5a671aa4721"
@@ -3708,6 +3713,11 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
+"@types/json-schema@^7.0.3":
+  version "7.0.7"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.7.tgz#98a993516c859eb0d5c4c8f098317a9ea68db9ad"
+  integrity sha512-cxWFQVseBm6O9Gbw1IWb8r6OS4OhSt3hPZLkFApLjM8TEXROBuQGLAH2i2gZpcXdLBIrpXuTDhH7Vbm1iXmNGA==
+
 "@types/json-schema@^7.0.5", "@types/json-schema@^7.0.6":
   version "7.0.6"
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
@@ -3959,6 +3969,52 @@
   dependencies:
     "@types/yargs-parser" "*"
 
+"@typescript-eslint/experimental-utils@^4.0.1":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.21.0.tgz#0b0bb7c15d379140a660c003bdbafa71ae9134b6"
+  integrity sha512-cEbgosW/tUFvKmkg3cU7LBoZhvUs+ZPVM9alb25XvR0dal4qHL3SiUqHNrzoWSxaXA9gsifrYrS1xdDV6w/gIA==
+  dependencies:
+    "@types/json-schema" "^7.0.3"
+    "@typescript-eslint/scope-manager" "4.21.0"
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/typescript-estree" "4.21.0"
+    eslint-scope "^5.0.0"
+    eslint-utils "^2.0.0"
+
+"@typescript-eslint/scope-manager@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.21.0.tgz#c81b661c4b8af1ec0c010d847a8f9ab76ab95b4d"
+  integrity sha512-kfOjF0w1Ix7+a5T1knOw00f7uAP9Gx44+OEsNQi0PvvTPLYeXJlsCJ4tYnDj5PQEYfpcgOH5yBlw7K+UEI9Agw==
+  dependencies:
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
+
+"@typescript-eslint/types@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.21.0.tgz#abdc3463bda5d31156984fa5bc316789c960edef"
+  integrity sha512-+OQaupjGVVc8iXbt6M1oZMwyKQNehAfLYJJ3SdvnofK2qcjfor9pEM62rVjBknhowTkh+2HF+/KdRAc/wGBN2w==
+
+"@typescript-eslint/typescript-estree@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.21.0.tgz#3817bd91857beeaeff90f69f1f112ea58d350b0a"
+  integrity sha512-ZD3M7yLaVGVYLw4nkkoGKumb7Rog7QID9YOWobFDMQKNl+vPxqVIW/uDk+MDeGc+OHcoG2nJ2HphwiPNajKw3w==
+  dependencies:
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
+    debug "^4.1.1"
+    globby "^11.0.1"
+    is-glob "^4.0.1"
+    semver "^7.3.2"
+    tsutils "^3.17.1"
+
+"@typescript-eslint/visitor-keys@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.21.0.tgz#990a9acdc124331f5863c2cf21c88ba65233cd8d"
+  integrity sha512-dH22dROWGi5Z6p+Igc8bLVLmwy7vEe8r+8c+raPQU0LxgogPUrRAtRGtvBWmlr9waTu3n+QLt/qrS/hWzk1x5w==
+  dependencies:
+    "@typescript-eslint/types" "4.21.0"
+    eslint-visitor-keys "^2.0.0"
+
 "@webassemblyjs/ast@1.9.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.9.0.tgz#bd850604b4042459a5a41cd7d338cbed695ed964"
@@ -9957,6 +10013,13 @@ eslint-plugin-import@^2.22.1:
     resolve "^1.17.0"
     tsconfig-paths "^3.9.0"
 
+eslint-plugin-jest@^24.3.4:
+  version "24.3.4"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-jest/-/eslint-plugin-jest-24.3.4.tgz#6d90c3554de0302e879603dd6405474c98849f19"
+  integrity sha512-3n5oY1+fictanuFkTWPwSlehugBTAgwLnYLFsCllzE3Pl1BwywHl5fL0HFxmMjoQY8xhUDk8uAWc3S4JOHGh3A==
+  dependencies:
+    "@typescript-eslint/experimental-utils" "^4.0.1"
+
 eslint-plugin-mocha@^8.1.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/eslint-plugin-mocha/-/eslint-plugin-mocha-8.1.0.tgz#b9aebbede46a808e46e622c8fd99d2a2f353e725"
@@ -10027,7 +10090,7 @@ eslint-scope@^4.0.3:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-eslint-scope@^5.1.0, eslint-scope@^5.1.1:
+eslint-scope@^5.0.0, eslint-scope@^5.1.0, eslint-scope@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-5.1.1.tgz#e786e59a66cb92b3f6c1fb0d508aab174848f48c"
   integrity sha512-2NxwbF/hZ0KpepYN0cNbo+FN6XoK7GaHlQhgx/hIZl6Va0bF45RQOOwhLIy8lQDbuCiadSLCBnH2CFYquit5bw==
@@ -25434,7 +25497,7 @@ tsconfig-paths@^3.9.0:
     minimist "^1.2.0"
     strip-bom "^3.0.0"
 
-tslib@^1.10.0, tslib@^1.9.0, tslib@^1.9.3:
+tslib@^1.10.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
@@ -25449,6 +25512,13 @@ tsscmp@1.0.6:
   resolved "https://registry.yarnpkg.com/tsscmp/-/tsscmp-1.0.6.tgz#85b99583ac3589ec4bfef825b5000aa911d605eb"
   integrity sha512-LxhtAkPDTkVCMQjt2h6eBVY28KCjikZqZfMcC15YBeNjkgUpdCfBu5HoiOTDu86v6smE8yOjyEktJ8hlbANHQA==
 
+tsutils@^3.17.1:
+  version "3.21.0"
+  resolved "https://registry.yarnpkg.com/tsutils/-/tsutils-3.21.0.tgz#b48717d394cea6c1e096983eed58e9d61715b623"
+  integrity sha512-mHKK3iUXL+3UF6xL5k0PEhKRUBKPBCv/+RkEOpjRWxxx27KKRBmmA60A9pgOUvMi8GKhRMPEmjBRPzs2W7O1OA==
+  dependencies:
+    tslib "^1.8.1"
+
 ttest@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ttest/-/ttest-2.1.1.tgz#ee0c9118fff6580a5c8d6cfe69845219e075277f"