Problem async/await jest test

const testAsync = () => Promise.resolve('hello world');

describe('async await test', () => {
  test('try 1', async () => {
    const result = await testAsync();
    expect(result).toBe('hello world');
  });
});

async await test
     encountered a declaration exception (5ms)

async await test › encountered a declaration exception

ReferenceError: regeneratorRuntime is not defined
    
    4  |   
    5  |   describe('async await test', () => {
  > 6  |   test('try 1', async () => {
    7  |     const result = await testAsync();
    8  |     expect(result).toBe('hello world');
    9  |   });

[ValSol]

Found a way:

In the file jest.config.js set:

setupFiles: ["<rootDir>/jest.setup.js"],

create new file jest.setup.js with this content:

import '@babel/polyfill';

Working!

[ValSol]

Figuring out how to make the webdriver.io + mocha work with RSK found another way for solution the issue. Instead of changing jest.config.js and adding jest.setup.js file we:

yarn add --dev @babel/runtime@7.0.0-beta.36 @babel/plugin-transform-runtime@7.0.0-beta.36

and insert this row:

plugins: [['@babel/plugin-transform-runtime', { polyfill: false }]],

in the .babelrc.js file