Access module specifier from thrown Error

[marklundin]

When importing a module that contains the following code, which throws a SyntaxError such as this.

import NoDefault from './invalid-module.js'

importShim would throw the error containing the blob url The requested module 'blob:https://xyzcom/df954a0e-1f96-4f52-8521-c2a32ea59bde' does not provide an export named 'default'.

Is there any way to retrieve the original path to the module './invalid-module' in the thrown error rather than the blob url?

[guybedford]

We could implement an ES Module Shims specific exports validation which could allow us to catch this earlier in the pipeline and throw a nicer error. It would have some overhead, but sounds like it would be the right approach here. While inspecting the blob URL does have a source URL, but browser debugging is not great here I know.

I don't have the bandwidth to work on a named exports validation and error phase, but will mark this as an enhancement for the project.