How do I get all the tabs in a Visual Studio Code window as an array of filenames?

Question

I am currently looking to find the call that will allow me to see all the tabs in a Visual Studio Code editor (1.txt, 2.txt, 3.txt) being returned back in an array for example.

Answer 1

const tabArray = vscode.window.tabGroups.all;

will return an array of editor groups. And then within each editor group (or "tabGroup") you can get an array of its tabs with:

const firstGroupOfTabs = tabArray[0].tabs;

const firstTabName = firstGroupOfTabs[0].label;

or 

const firstTabUri = firstGroupOfTabs[0].input.uri;  // gives you a uri if you need the full path - for most, but not all, editor types

So you will have to do a loop through the tabGroups.all to get all the fileNames. One example of doing so:

const tabArray = tabGroupArray.flatMap(group => group.tabs.map(tab => tab.label));

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To make this more typescript-friendly, try this:

  const tabArray: ReadonlyArray<vscode.TabGroup> = vscode.window.tabGroups.all;
  const firstGroupOfTabs: ReadonlyArray<vscode.Tab> = tabArray[0].tabs;
  
  let firstTabUri: vscode.Uri;  
  if (firstGroupOfTabs[0].input instanceof vscode.TabInputText) firstTabUri = firstGroupOfTabs[0].input.uri;

Here I narrowed the input to vscode.TabInputText because some of the Tab.input's for editors don't even have a uri member. If you are interested in other Tab.input's you can narrow for those or possibly make a union type to simplify it.