Why vs code doesn't show types for Deno

[niyarlatotep]

I've installed this plugin, but when I try to write code, for example:

console.log(Deno.readDirSync("."));

vs code shows me an error:
Cannot find name 'Deno'.ts(2304)
I use built-in version of TypeScript. Do I need to download types somehow?

[buttercubz]

check if you have this file deno.d.ts
in windows C:\Users\userhere.deno
in linux /Users/deno/.deno

[niyarlatotep]

There is only bin folder there which contains of deno.zip that's all. I used chcolatelly for install and I have Windows 8.1 is it an install error propably? Will try to place this file, thank you!

[niyarlatotep]

I placed deno.d.ts file into C:\Users\userhere.deno but no effects. It still doesn't work.

[chenguzhen87]

you can reference #62

[niyarlatotep]

Fixed by copying lib.deno.d.ts and lib.webworker.d.ts from

C:\Users\<User>\.vscode\extensions\denoland.vscode-deno-1.24.0\node_modules\typescript-deno-plugin\lib

to

C:\Users\<User>\AppData\Local\deno

Seems like extention wasn't able to copy it's dts files don't know why.

[zzhenryquezz]

same here the scripts run normal but the types are missing

[buttercubz]

@niyarlatotep
try to have deno updated to the latest version it is currently 1.0.4.

use deno upgrade --version 1.0.4

[jbergant]

Hi,
I have version 1.0.4 of Deno. I'm using mac.

I installed and enabled the plugin: https://github.com/denoland/vscode_deno
Ts modules can be imported when the plugin is enabled.

But the Deno is not recognized.

I tried reinstalling the plugin.

In the settings I've added:
{
"deno.enable": true
}

I also tried:
{
"deno.enabled": true
}

I rebooted.

No luck.

There were no deno.d.ts installed anywhere. Do I need that file?

What else can I do?

[niyarlatotep]

@jbergant
as temporary fix you can try to copy
lib.deno.d.ts and lib.webworker.d.ts
from
~/.vscode/extensions/denoland.vscode-deno-1.24.0/node_modules/typescript-deno-plugin/lib
to
$HOME/Library/Caches/deno
as I mentioned before, but I'm not sure about Mac OS paths you can try. It worked for me on Windows

[jbergant]

Hi @niyarlatotep,

these two files were not installed on the mac during the installation.

After restarting my computer a few times, I can now run deno scripts in the terminal with no problem. The problem any remains in the IDE where I get the error: "Cannot find name 'Deno'."

[buttercubz]

@jbergant you can download lib.deno.d.ts file in this link from latest release.

this file contain all type definitions for Deno namespaces

[filburt-turle]

@buttercubz I just downloaded the latest Deno and I'm having the same problems as @jbergant, vscode is not picking up the Deno and it's not showing the methods...

I'm running Version: 1.46.0-insider

Is there a manual way to get this working?

🦕 ~/D/deno ➜  find ./ -name lib.webworker.d.ts                           master
🦕 ~/D/deno ➜  find ./ -name lib.deno.d.ts                                master

Those files don't actually exist.

[buttercubz]

@filburt-turle try to restart typescript server in vscode or reinstall vscode_deno plugin

[jbergant]

Hi @buttercubz , @filburt-turle
finally, it's working for me. I downloaded lib.deno.d.ts file, then I restarted the typescript server, restarted mac and it worked!
Thanks for the tips :)

[followben]

I'm running VS Code 1.45.1 on macOS Catalina 10.15.4 using deno: 1.0.5, VS Code's own typescript server at 3.9.2 and v1.24.0 of the official denoland.vscode-deno plugin and I'm having the same problem.

I tried all the suggestions on this thread including re-downloading the latest lib.deno.d.ts into ~/.vscode/extensions/denoland.vscode-deno-1.24.0/node_modules/typescript-deno-plugin/lib/, restarting the typescript server and rebooting my Mac... to no avail.

However I did find a workaround thanks to this helpful StackOverflow answer. In short:

cd <my-project>
touch tsconfig.json
mkdir lib
deno types > lib/deno_runtime.d.ts 

Even if tsconfig.json is empty, it seems VS Code will automatically include deno_runtime.d.ts. Of course if you put anything else in there, you'll want to invoke deno with the --config option to ensure it uses your tsconfig.json rather than it's own.

[adamledwards]

@niyarlatotep solution worked for me.
Thank you

[kevinXmichael]

Perhaps init deno will solve the problem: In vscode "show all commands" via CMD/CTRL + SHIFT + P and search for init deno, run it. Helped me to solve all problems with shown errors in vscode with deno.

[k3v3n]

It turns out that the issue was resolved by opening the command palette and running the Deno Init command on the bottom right.

[webpreneur]

I'm running VS Code 1.45.1 on macOS Catalina 10.15.4 using deno: 1.0.5, VS Code's own typescript server at 3.9.2 and v1.24.0 of the official denoland.vscode-deno plugin and I'm having the same problem.

I tried all the suggestions on this thread including re-downloading the latest lib.deno.d.ts into ~/.vscode/extensions/denoland.vscode-deno-1.24.0/node_modules/typescript-deno-plugin/lib/, restarting the typescript server and rebooting my Mac... to no avail.

However I did find a workaround thanks to this helpful StackOverflow answer. In short:

cd <my-project>
touch tsconfig.json
mkdir lib
deno types > lib/deno_runtime.d.ts 

Even if tsconfig.json is empty, it seems VS Code will automatically include deno_runtime.d.ts. Of course if you put anything else in there, you'll want to invoke deno with the --config option to ensure it uses your tsconfig.json rather than it's own.

This worked for me. Cheers!