See various string-compilation-* tests at https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/module/dynamic-import?label=master&label=experimental&product=chrome&product=firefox&product=safari&aligned&q=%2Fhtml%2Fsemantics%2Fscripting-1%2Fthe-script-element%2Fmodule%2Fdynamic-import%2F , plus the new one I'm adding at https://github.com/web-platform-tests/wpt/pull/41895 .

The basic goal is that things like

eval(`import("./some-relative-url.mjs")`);

or

setTimeout(`import("./some-relative-url.mjs")`);

should behave the same as

import("./some-relative-url.mjs");