Template literals cause syntax error inside {% javascript %} Liquid tag

[1TheNeo1]

Description

Using JavaScript template literals (backticks) inside Shopify’s {% javascript %} Liquid tag
causes a syntax/parsing error. The same code works correctly when rewritten using
string concatenation.

This appears to be a Liquid parsing issue rather than a JavaScript syntax problem.

Failing example

{% javascript %}
this._inner.style.transform = `translate3d(${this._x}px,0,0)`;
{% endjavascript %}

Error

Error is a bit strange, in scripts it fails at parsing all section javascripts into a single scripts.js file:

Additional context

This parsing error only reproduces when the JavaScript is defined inside a
Custom Element (HTMLElement subclass). When similar code is placed outside
of a Custom Element, the {% javascript %} tag does not throw an error.