If a package is missing, warn which file imported it.

[justinbmeyer]

The above warning should be visible by using this commit: canjs/can-stache-route-helpers@5085b65

of can-stache-route-helpers

[justinbmeyer]

To make this warn now, you'll probably manually have to delete can-define from your node_modules folder as the bug in can-define is fixed. The warning might be because the module importing can-define was within node_modules.

[leoj3n]

I have the same issue with the events package. I can't figure out who is trying to use events when it 404s. All I know is that it 404'd. Even if I manually bundle events:

    "map": {
      "events": "~/node_modules/events/events"
    },
    "bundle": [
      "~/node_modules/events/events",

Which causes dist/bundles/my-project/node_modules/events/events.js to exist, it still 404s because it is looking for /dist/node_modules/events/events.js which is outside the my-project bundle which is probably related to what @justinbmeyer mentioned:

The warning might be because the module importing can-define was within node_modules.

Is there some way to create a mapping to fix this? Currently the only solution I have is to manually create the /dist/node_modules/events/ directory and copy events.js as part of the build step.

[cherifGsoul]

My solution to solve this issue is to add stack property to

steal/ext/npm-extension.js

Line 400 in 8c81c5a

newError.statusCode = error.statusCode;

newError.stack = error.stack

[cherifGsoul]

After discussion with @matthewp the error will look like the following screenshot: