Symfony Asset Mapper: How to Finally Test JavaScript Properly Without the Pain

You know the drill. Symfony Asset Mapper is a great tool. You've gotten rid of Webpack, npm install, and complex build processes. Everything is fast, cl ean, and modern. And then comes the fateful question: "And how do we actually test this?" Then comes the reality check. Asset Mapper works on the principle of importmap.php , which your Node.js (and thus most test runners) has no clue about. You try to run a test and you get: ERR_MODULE_NOT_FOUND . Many people just wave it off and say that testi