Run currently opened .ts file in VS Code

.vscode\tasks.json

{
  // Steps
  // 1. Open workspace in the Visual Studio Code
  // 2. Install 'esno' (https://www.npmjs.com/package/esno)
  // 3. Create a '.vscode/tasks.json' file
  // 4. Open a TypeScript file
  // 5. Press 'Ctrl + Shift + B' (run build task)
  "version": "2.0.0",
  // See https://go.microsoft.com/fwlink/?LinkId=733558
  // for the documentation about the tasks.json format
  "tasks": [
    {
      "label": "npx: esno", // Name shown in the 'Run Task' list
      "group": "build", // (Optional) Set as Build Task
      // If "group": "build" is removed, run as following
      // 1-4: Identical as above
      // 5: Command Palette / Task: Run Task / npx: esno
      "type": "shell",
      // Basically runs 'npx esno path-to-current-file'
      "command": "npx esno ${relativeFile}"
    }
  ]
}