Transform Typescript with 'ts-jest' instead of 'ts-jest/preprocessor'

Author: Kacper Dela

config/jest/typescriptTransform.js

@@ -37,7 +37,7 @@ module.exports = (resolve, rootDir, isEjecting) => {
       '^.+\\.(js|jsx|mjs)$': isEjecting
         ? '<rootDir>/node_modules/babel-jest'
         : resolve('config/jest/babelTransform.js'),
-      '^.+\\.tsx?$': resolve('config/jest/typescriptTransform.js'),
+      '^.+\\.tsx?$': 'ts-jest',
       '^.+\\.css$': resolve('config/jest/cssTransform.js'),
       '^(?!.*\\.(js|jsx|mjs|css|json)$)': resolve(
         'config/jest/fileTransform.js'