README.md

Manually update @amcharts/amcharts5/package.json with "type": "module", then run:

npm t

> amcharts-demo@1.0.0 test
> NODE_OPTIONS="--experimental-vm-modules" jest

(node:26882) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:26882) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
 PASS  ./chart.test.mjs
  ✓ example (53 ms)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        0.401 s, estimated 1 s
Ran all test suites.

chart.mjs

import * as am5 from '@amcharts/amcharts5';

chart.test.mjs

test('example', async () => {
  const chart = await import('./chart.mjs');
  expect(chart).toMatchObject({})
})

package.json

{
  "name": "amcharts-demo",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "NODE_OPTIONS=\"--experimental-vm-modules\" jest"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@amcharts/amcharts5": "^5.4.7",
    "jest-environment-jsdom": "^29.7.0"
  },
  "devDependencies": {
    "jest": "^28.1.3"
  },
  "jest": {
    "testMatch": [
      "**/__tests__/**/*.?(m)js",
      "**/?(*.)+(spec|test).?(m)js"
    ],
    "testEnvironment": "jsdom"
  }
}