How to pass input variable from launch.json to tasks.json in vscode - visual-studio-code

Question

I can use input variables from launch.json in launch.json.
"configurations": [
{
...
"args": [${input:file_no}]
"preLanuchTask": "runPreTasks"
...
}
],
"inputs": [
{
"id": "file_no",
"type": "promptString"
}
]
Now, I want to get access to the same variable without entering input a second time in tasks.json.
{
"version": "2.0.0",
"tasks":[
{
"label": "runPreTasks",
"type": "shell",
"command": sh,
"args": [
"/path2script/scriptName.sh",
"${input:file_no}" // This does not work, without defining input again
]
}
]
}
Is there a way to pass input variables from launch.json to tasks.json in vscode?

Answer 1

You can use the extension Command Variable v1.21.0
It has a command extension.commandvariable.promptStringRemember that behaves the same as an ${input:name} promptString variable. By adding a key property the result is saved under this key and you can retreive it with the extension.commandvariable.rememberPick command.
The extension.commandvariable.rememberPick command can be used in a different task/launch than the extension.commandvariable.promptStringRemember command
{
"version": "2.0.0",
"tasks": [
{
"label": "Task 1",
"type": "shell",
"command": "dostuff1",
"args": ["-p", "${input:promptPath}"]
},
{
"label": "Task 2",
"type": "shell",
"command": "dostuff2",
"args": ["-p", "${input:rememberPath}"]
},
{
"label": "Do Task 1 and 2",
"dependsOrder": "sequence",
"dependsOn": ["Task 1", "Task 2"],
"problemMatcher": []
}
],
"inputs": [
{
"id": "promptPath",
"type": "command",
"command": "extension.commandvariable.promptStringRemember",
"args": {
"key": "path",
"description": "Enter a path"
}
},
{
"id": "rememberPath",
"type": "command",
"command": "extension.commandvariable.rememberPick",
"args": { "key": "path" }
}
]
}

Answer 2

Following #rioV8 answer, I edited my json files as shown below:
launch.json:
"configurations": [
{
...
"args": [${input:file_no}]
"preLanuchTask": "runPreTasks"
...
}
],
"inputs": [
{
"id": "file_no",
"type": "command",
"command": "extension.commandvariable.promptStringRemember",
"args": {
"key": "lastnumber",
"description": "Enter the number"
}
}
]
tasks.json:
{
"version": "2.0.0",
"tasks":[
{
"label": "runPreTasks",
"type": "shell",
"command": sh,
"args": [
"/path2script/scriptName.sh",
"${input:file_no}"
]
}
]
"inputs": [
{
"id": "file_no",
"type": "command",
"command": "extension.commandvariable.rememberPick",
"args": { "key": "lastnumber" }
}
]
}