Find a better way to use ESM with Jest and replace jest-esm-transformer

[0pdd]

The puzzle 1484-7c5cb814 from #1484 has to be resolved:

mystamps/src/main/frontend/jest.config.js

Line 6 in b540b5a

// @todo #1484 Find a better way to use ESM with Jest and replace jest-esm-transformer

The puzzle was created by Slava Semushin on 10-Jan-21

[php-coder]

See:

• https://bl.ocks.org/rstacruz/511f43265de4939f6ca729a3df7b001c
• https://jestjs.io/docs/en/ecmascript-modules
• https://flaviocopes.com/how-to-enable-es-modules-nodejs/
• https://nodejs.org/api/esm.html

[php-coder]

Quote from https://www.valentinog.com/blog/jest/#bonus-es-modules-with-jest

if you wish to use import ES module syntax in your Jest tests without babel and friends you should have Node.js >=v13.x, and Jest >=26.1.0 installed.

In other words, we can use babel for transforming code for us or wait for #1442