Javascript HelloWorld shows error when running the hello world command

[DoroNahari]

• VSCode Version: 1.40.1
• OS Version: macOs mojave 10.14.6

I generated new Javascript HelloWorld template and run it in vscode.
When i run the HelloWorld command, the command executes but i get an error:

Activating extension `vscode-samples1.helloworld-sample` failed:  Cannot find module '/Users/i348307/.vscode/extensions/vscode-samples1.helloworld-sample-0.0.1/out/extension.js'
Require stack:
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/loader.js
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/bootstrap-amd.js
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/bootstrap-fork.js
extensionHostProcess.js:506
Here is the error stack:  Error: Cannot find module '/Users/i348307/.vscode/extensions/vscode-samples1.helloworld-sample-0.0.1/out/extension.js'
Require stack:
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/loader.js
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/bootstrap-amd.js
- /Applications/Visual Studio Code.app/Contents/Resources/app/out/bootstrap-fork.js
	at Function._resolveFilename (internal/modules/cjs/loader.js:627:15)
	at Function.<anonymous> (internal/modules/cjs/loader.js:531:27)
	at Function.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:796:719)
	at Function.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:765:302)
	at Function._load (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:761:870)
	at Module.require (internal/modules/cjs/loader.js:685:19)
	at require (internal/modules/cjs/helpers.js:16:16)
	at Function.s [as __$__nodeRequire] (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/loader.js:32:963)
	at d._loadCommonJSModule (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:766:484)
	at d._doActivateExtension (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:677:300)
	at d._activateExtension (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:676:360)
	at Object.actualActivateExtension (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:674:296)
	at Object._activateExtension (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:506:21)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:505:632
	at Array.map (<anonymous>)
	at Object._activateExtensions (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:505:620)
	at Object.activateByEvent (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:503:413)
	at d._activateByEvent (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:675:24)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:683:293

[aeschli]

Are you sure this was the Javascript sample? (Not the TypeScript sample)
The Javascript sample has the extension at vscode-samples1.helloworld-sample-0.0.1/extension.js (no out).

If this was in fact the Typescript sample, can you run npm install && npm run compile to see whether the compilation worked?

[delfu]

i have the same issue with typescript version.

1. running compile solves that issue but future changes are not watched
2. when F5 there's a error The terminal process terminated with exit code: 127 with no additional info

[GaryBoone]

I'm seeing the same issue on my first attempt at following https://code.visualstudio.com/api/get-started/your-first-extension . I'm using typescript on Catalina. Like delfu@, running npm run compile solves it. And hitting F5, I see the exit code: 127 message.

If I do try to run the Hello World command in the new window, I see an error about "Can't find the extension" and see that it's referring to an out/ directory that doesn't exist before I manually compile.

How do I manually do what F5 does? Where is it configured? Where is its output? Where does it log? Other ideas?

[GaryBoone]

I installed npm with Homebrew. It seems that vscode shell commands such as the launch command aren't picking up the right path to include my brew/bin path, even though the interactive shell works. I checked process.env in devtools (Help|Toggle Developer Tools, then paste it into the Console tab), but it showed the correct path. I then tried copying the brew PATH export line from .bash_profile to a .bashrc file to run them in non-login shells. But that didn't work.

What did work was to add a new command line flag to tell vscode to run shells interactively. Do that by adding -i to the list of shell args in the terminal.integrated.shellArgs.osx preference.

[aeschli]

To see what F5 runs. check the launch.json - preLaunchTask.
It's the default build task which is defined in tasks.json: npm run watch

[raulcesar]

I'm getting this same problem. Using Code-OSS version 1.42.0 on arch linux.
The preLaunchTask is set as "defaultBuildTask" wich is set to "watch". If I manually run watch (i.e yarn run watch or npm run watch), it works.

[raulcesar]

After much fiddling, I found the problem, at least in my system.
For the sake of context, I use arch linux and when installing nodejs with arch's package manager (pacman), npm is not automatically installed (as it is a separate package). Since I use yarn in my projects, i never bothered to install it. As this is the case, whe I used the yeoman generator to create my extension (yo code), I chose yarn as the package manager. However, it appears this only effects the way the generator will run the "install" of packages. Apparently there is still some dependency with NPM. My guess would be that it runs the scripts with npm.
When I installed npm, the issues went away.

[aeschli]

Closing as I can't reproduce.

[Aaronphy]

i have the same issue with typescript version.

1. running compile solves that issue but future changes are not watched
2. when F5 there's a error The terminal process terminated with exit code: 127 with no additional info

Any information ? solved?