Define a task property as one that can change per platform - visual-studio-code

Question

I am developing a VSCode extension that provide tasks, how can I specify that a property can change per platform, for example on "shell" task we can have this tasks.json:
"tasks": [
{
"type": "shell",
"windows": { "command": "wndCmd.exe" },
"linux": { "command": "lnxCmd" },
"osx": { "command": "osxCmd" }
}]
but for mine it is not possible.
From the sample on documentation, it is not possible create a task like:
"tasks": [
{
"type": "rake",
"task": "some",
"windows": { "file": "winFile" },
"linux": { "file": "linuxFile" },
"osx": { "file": "osxFile" }
}]

Answer 1

I don't really see a reason why you would need to do that for dynamically generated tasks, that only makes sense for declarative / static task declarations.
Just generate the version of the task that's appropriate for the current OS. You can check process.platform for that, see also:
How do I determine the current operating system with Node.js.

Answer 2

I can do it by hand:
"taskDefinitions": [
{
"type": "rake",
"required": [
"task"
],
"properties": {
"task": {
"type": "string",
"description": "The Rake task to customize"
},
"file": {
"type": "string",
"description": "The Rake file that provides the task. Can be omitted."
},
"windows: {
"type": "object",
"properties": {
"file": {
"type": "string",
"description": "..."
}
}
},
"linux: {
"type": "object",
"properties": {
"file": {
"type": "string",
"description": "..."
}
}
},
"osx: {
"type": "object",
"properties": {
"file": {
"type": "string",
"description": "..."
}
}
}
}
}
]