Example tests throw errors

[dmitrizzle]

Error.

Running example tests seems to have some issue with jest when it throws this error:

Summary of all failing tests
 FAIL  examples/index.test.js
  ● Test suite failed to run

    /Users/dmitri/Documents/roast-cms/french-press-editor/node_modules/typeface-rajdhani/index.css:2
    @font-face {
    ^

    SyntaxError: Invalid or unexpected token

       6 | import { render } from "react-dom";
       7 | import React from "react";
    >  8 | 
         | ^
       9 | import { EXAMPLE_THEME } from "./constants";
      10 | import {
      11 |   //

      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:403:17)
      at Object.<anonymous> (examples/index.js:8:1)
      at Object.<anonymous> (examples/index.test.js:9:9)


Test Suites: 1 failed, 20 passed, 21 total
Tests:       20 passed, 20 total
Snapshots:   0 total
Time:        5.048s
Ran all test suites.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Attempts at fix.

jestjs/jest#3094 (comment)

Result.

I've implemented steps in the above solution (installing proxy and mocking files), however the error still persists. I have also tried installing https://github.com/styled-components/jest-styled-components and importing it in the test file, however, that didn't help either.
Mock files and proxies are in #66