Visual Studio Code extension development problem with typescript

Question

as you see above, the building process never finishes and no extension host window appears.

the problem also exists when all extensions all disabled

but this problem doesn't exist when creating project with javascript (the problem is only with typescript)

the steps that I follow is from this tutorial and I also tried the hello world sample from github. but none of them worked.

---

EDIT:

I tried to open extension development host window manually by code --extensionDevelopmentPath="path/to/my/project" and it worked.

• I think the issue is with some of vscode's configurations

possible fix: I should check the configurations such as npm: watch. but I don't know where are they and what should I do with them??

so any idea?

EDIT 2:

task.json

// See https://go.microsoft.com/fwlink/?LinkId=733558
// for the documentation about the tasks.json format
{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "npm",
            "script": "watch",
            "problemMatcher": "$tsc-watch",
            "isBackground": true,
            "presentation": {
                "reveal": "never"
            },
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}

launch.json

// A launch configuration that compiles the extension and then opens it inside a new window
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Run Extension",
            "type": "extensionHost",
            "request": "launch",
            "args": [
                "--extensionDevelopmentPath=${workspaceFolder}"
            ],
            "outFiles": [
                "${workspaceFolder}/out/**/*.js"
            ],
            "preLaunchTask": "${defaultBuildTask}"
        },
        {
            "name": "Extension Tests",
            "type": "extensionHost",
            "request": "launch",
            "args": [
                "--extensionDevelopmentPath=${workspaceFolder}",
                "--extensionTestsPath=${workspaceFolder}/out/test/suite/index"
            ],
            "outFiles": [
                "${workspaceFolder}/out/test/**/*.js"
            ],
            "preLaunchTask": "${defaultBuildTask}"
        }
    ]
}

• then I noticed that if I comment out "preLaunchTask": "${defaultBuildTask}" in launch.json file, the problem solves.

Answer 1

Finally I caught the issue. that was because of the locale of my system that was set to Persian which typescript problem matcher couldn't recognize(Persian digits).

By setting system locale to English the problem solved and everything now works fine as expected.

please see the issue on github