ERROR using tasklist-theia

[metadatadriven]

I can run the node-json-thiea example from a clone of the the glsp-example repo.

I am now trying to get the same example running inside my Theia project. I have basically copied the tasklist-glsp-client, tasklist-glsp-server and tasklist-theia into my project and hooked-up the package.json, etc.

Everything builds ok and Thiea runs, however when I click on the example.tasklist the GLSP diagram does not open, and I get the following error in the log

2025-05-26T13:54:26.905Z root ERROR Error invoking diagram startup hook 'preInitialize':
 Error: You are attempting to construct [function/class ViewerCache] in a synchronous way but it has asynchronous dependencies.
    at Container._getButThrowIfAsync (http://127.0.0.1:3000/bundle.js:358236:19)
    at Container.get (http://127.0.0.1:3000/bundle.js:357999:21)
    at Binding.dynamicValue (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:42249:26)
    at http://127.0.0.1:3000/bundle.js:359522:104
    at tryAndThrowErrorIfStackOverflow (http://127.0.0.1:3000/bundle.js:360501:16)
    at _resolveFactoryFromBinding (http://127.0.0.1:3000/bundle.js:359522:61)
    at _getResolvedFromBinding (http://127.0.0.1:3000/bundle.js:359541:22)
    at http://127.0.0.1:3000/bundle.js:359558:22
    at _resolveInScope (http://127.0.0.1:3000/bundle.js:359551:14)
    at _resolveBinding (http://127.0.0.1:3000/bundle.js:359557:12)
2025-05-26T13:54:26.905Z root ERROR Error invoking diagram startup hook 'postRequestModel':
 Error: Model root not available yet
    at get modelRoot (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:1862:19)
    at get graphSelector (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:22731:94)
    at RestoreViewportHandler.postRequestModel (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:22735:40)
    at DiagramLoader.invokeStartupHook (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:2779:85)
    at async DiagramLoader.load (http://127.0.0.1:3000/vendors-node_modules_eclipse-glsp_theia-integration_lib_browser_theia-integration-frontend-mo-4c1c6b.js:2771:9)

Any help would be appreciated!
Thanks.

[metadatadriven]

So - I am closing this issue as I think I've found the solution... I was upgrading Theia to 1.61.0 but still had @eclipse-glsp/theia-integration at 2.3.0, so upgrading it to 2.4.0-theia1.60.0 seems to have resolved this problem

• I have others now, just not this:(

[rsoika]

Hi @metadatadriven

I run into the same situation.
Did you solve your problem? Which versions of @eclipse-glsp/theia-integration and @theia/core are you now using?

Upgrading to theia 1.60 causes a lot of new errors in my case too....

[rsoika]

Ok, when I clone my own project into an empty new directory all works fine again.
So it seems to be still my own inability to understand node.js and yarn...

[tortmayr]

This is all very strange. I published successful several releases over the last months based on GLSP 2.3. Yesterday I just did a minor update of my build script and to test this I clean all node.js modules. I was still able to build, but from that point on trying to open a editor in theia caused the error @metadatadriven mentioned initial in this post. I wonder if you know this issue and if it is your general recommendation to upgrade to GLSP 2.4

It all depends on the Theia version you want to use. For >= 1.60.0 you definitely should upgrade to GLSP 2.4. If you are using a lower version you can also stick to 2.3. In general the changes between 2.3 and 2.4 are rather minor. There are no major changes which could cause potential API breaks at all.

This code causes the following compile error: ...

The error indicates that you somehow ended up with two different version of inversify. This is a bit unexpected since both GLSP and Theia are aligned and request the same version ("^1.6.3"). So I'm actually not sure why this happens.
You could check with 'yarn why inversify'. If there are two versions I would recommend to simply add a 'resolutions' block in your root package.json and explicitly enforce a version.

[rsoika]

I played around some more hours with my yarn build scripts and came to the following conclusion:

It seems to me that all the trouble is caused by the node version.

• When I use node v18.17.1 all is fine
• Using node v18.19.0 or using node v22.16.0 breaks my application.

Currently I am still on GLSP 2.3 and Theia 1.56.0

Do you have a recommendation regarding the node version?

[rsoika]

@tortmayr can you explain me how I should add a 'resolutions' block in my root package.json and explicitly enforce the right version of inversify?

[rsoika]

Finally I upgraded to GLSP Version 2.4.0 and Theia 1.60.0
and I also removed old devDependencies and fixed some other old entries
and now all is WORKING AGAIN :-)