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`deno check` error: Cannot find name 'Deno'`

Aadamgreg9/6/2023
In my project, deno check has started producing the error TS2304 [ERROR]: Cannot find name 'Deno' . I've found a lot of reports about this error coming from the VS Code extension, but in my case it's coming from Deno itself, and the VS Code extension does NOT show this problem. I'm quite confused! Can anybody suggest a solution please? In case it helps anyone else: I resolved the problem by adding /// <reference lib="deno.ns" /> to the top of the module that used the Deno object. I still don't know why that became necessary (after updating a dependency?), and why is it not necessary in every module that uses Deno
Bbartlomieju9/6/2023
Probably because a dependency uses a directive like this an overrides the default library. Vscode should provide you with a hint to add this exact reference
Aadamgreg9/8/2023
Ah, thanks. I didn't see a hint from VS Code. Since the Typescript compiler is bundled inside Deno itself in this case, would it be possible to make a change in Deno so that this is unnecessary? I assume there's no scenario where Deno is unavailable?
Bbartlomieju9/8/2023
I'm not sure, kinda makes sense. @dsherret thoughts on this?
ABAltair 680b9/8/2023
It's been my experience that once you add a /// <reference to a file, it's represented in all other files. At least in main.ts, in my case. I write all front end code in TS and bundle with esbuild. In main.ts, I add /// <reference lib="dom" />, and never need to add it in other files. VSCode on Windows.
Ddsherret9/8/2023
GitHub
Prevent no-default-lib removing Deno global? · Issue #20420 · den...
It is quite annoying to import something and it has a /// <reference no-default-lib="true" /> directive as it will remove the Deno global. Perhaps we should look into if there's...
Aadamgreg9/8/2023
That's awesome, thanks!

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