Use ts-jest as preprocessor

Author: frenic

jest.config.js

@@ -1,7 +1,7 @@
 module.exports = {
   moduleFileExtensions: ['ts', 'js'],
   transform: {
-    '^.+\\.ts$': '<rootDir>/preprocessor.js',
+    '^.+\\.ts$': 'ts-jest',
   },
   testMatch: ['**/__tests__/(src|dist).*.ts'],
   globalSetup: '<rootDir>/prepare-tests.ts',

package.json

@@ -9,24 +9,25 @@
   "license": "MIT",
   "devDependencies": {
     "@types/chokidar": "^2.1.3",
-    "@types/jest": "^26.0.7",
+    "@types/jest": "^26.0.10",
     "@types/jsdom": "^16.2.3",
-    "@types/node": "^14.0.27",
+    "@types/node": "^14.6.0",
     "@types/prettier": "^2.0.2",
     "@types/request": "^2.48.5",
     "@types/turndown": "^5.0.0",
     "chalk": "^4.1.0",
-    "chokidar": "^3.4.1",
+    "chokidar": "^3.4.2",
     "fast-glob": "^3.2.4",
-    "flow-bin": "^0.130.0",
-    "jest": "^26.1.0",
-    "jsdom": "^16.3.0",
+    "flow-bin": "^0.131.0",
+    "jest": "^26.4.0",
+    "jsdom": "^16.4.0",
     "mdn-browser-compat-data": "git+https://github.com/mdn/browser-compat-data.git#e6e952bb934ba31a276237453cf892631ba224ee",
     "mdn-data": "git+https://github.com/mdn/data.git#9524ff7200bc5fce9990e49a80e39ddddf759ae6",
     "prettier": "^2.0.5",
     "request": "^2.88.2",
+    "ts-jest": "^26.2.0",
     "ts-node": "^8.10.2",
-    "tslint": "^6.1.2",
+    "tslint": "^6.1.3",
     "tslint-config-prettier": "^1.18.0",
     "turndown": "^6.0.0",
     "typescript": "~4.0.1-rc",