Jest encountered an unexpected token

Jest encountered an unexpected token.md

Jest encountered an unexpected token

FAIL src/components/AuthorityUserSettingItem/index.test.tsx ● Test suite failed to run

Jest encountered an unexpected token

This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

Here's what you can do:
 • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
 • If you need a custom transformation specify a "transform" option in your config.
 • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html

Details:

/home/circleci/repo/node_modules/react-dnd/dist/esm/index.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export * from './common';
                                                                                         ^^^^^^

SyntaxError: Unexpected token export

  1 | import * as React from "react";
  2 | import { create } from "react-test-renderer";
> 3 | import { DndProvider } from "react-dnd";

add package.json

setup

 "jest": {
"moduleNameMapper": {
  "^dnd-core$": "dnd-core/dist/cjs",
  "^react-dnd$": "react-dnd/dist/cjs",
  "^react-dnd-html5-backend$": "react-dnd-html5-backend/dist/cjs",
  "^react-dnd-touch-backend$": "react-dnd-touch-backend/dist/cjs",
  "^react-dnd-test-backend$": "react-dnd-test-backend/dist/cjs",
  "^react-dnd-test-utils$": "react-dnd-test-utils/dist/cjs"
}

I had the same issue and I had used "transformIgnorePatterns": [ "node_modules/(?!@ngrx|(?![deck.gl](http://deck.gl/))|ng-dynamic)" ] try to use it in package.json into jest-conf