From c49fe70083d10779e0534dacedb9ae0687c0c0a4 Mon Sep 17 00:00:00 2001
From: Roman Donchenko <roman@cvat.ai>
Date: Mon, 5 Dec 2022 11:24:33 +0300
Subject: [PATCH] Fix an "export was not found" webpack warning in canvas3d.ts
 (#5419)

The cause of the warning is explained here:

https://devblogs.microsoft.com/typescript/announcing-typescript-3-8-beta/#type-only-imports-exports

Add a webpack configuration option to treat such warnings as errors, to
prevent any more of them from appearing in the future.

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### Motivation and context
<!-- Why is this change required? What problem does it solve? If it
fixes an open
issue, please link to the issue here. Describe your changes in detail,
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Warnings are annoying.

### How has this been tested?
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- [x] I submit my changes into the `develop` branch
- ~~[ ] I have added a description of my changes into
[CHANGELOG](https://github.com/cvat-ai/cvat/blob/develop/CHANGELOG.md)
file~~
- ~~[ ] I have updated the [documentation](
https://github.com/cvat-ai/cvat/blob/develop/README.md#documentation)
accordingly~~
- ~~[ ] I have added tests to cover my changes~~
- ~~[ ] I have linked related issues ([read github docs](

https://help.github.com/en/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword))~~
- ~~[ ] I have increased versions of npm packages if it is necessary
([cvat-canvas](https://github.com/cvat-ai/cvat/tree/develop/cvat-canvas#versioning),

[cvat-core](https://github.com/cvat-ai/cvat/tree/develop/cvat-core#versioning),
[cvat-data](https://github.com/cvat-ai/cvat/tree/develop/cvat-data#versioning)
and
[cvat-ui](https://github.com/cvat-ai/cvat/tree/develop/cvat-ui#versioning))~~

### License

- [x] I submit _my code changes_ under the same [MIT License](
https://github.com/cvat-ai/cvat/blob/develop/LICENSE) that covers the
project.
  Feel free to contact the maintainers if that's a concern.
---
 cvat-canvas3d/src/typescript/canvas3d.ts | 4 +++-
 cvat-ui/webpack.config.js                | 5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/cvat-canvas3d/src/typescript/canvas3d.ts b/cvat-canvas3d/src/typescript/canvas3d.ts
index bf03acbc..6333e23d 100644
--- a/cvat-canvas3d/src/typescript/canvas3d.ts
+++ b/cvat-canvas3d/src/typescript/canvas3d.ts
@@ -118,5 +118,7 @@ class Canvas3dImpl implements Canvas3d {
 }
 
 export {
-    Canvas3dImpl as Canvas3d, Canvas3dVersion, ViewType, MouseInteraction, CameraAction, ViewsDOM, Mode as CanvasMode,
+    Canvas3dImpl as Canvas3d, Canvas3dVersion, ViewType, MouseInteraction, CameraAction, Mode as CanvasMode,
 };
+
+export type { ViewsDOM };
diff --git a/cvat-ui/webpack.config.js b/cvat-ui/webpack.config.js
index 9c8b9485..85582d81 100644
--- a/cvat-ui/webpack.config.js
+++ b/cvat-ui/webpack.config.js
@@ -134,6 +134,11 @@ module.exports = (env) => ({
                 },
             },
         ],
+        parser: {
+            javascript: {
+                exportsPresence: 'error',
+            },
+        },
     },
     plugins: [
         new HtmlWebpackPlugin({