How to overwrite an existing image

Photoshop
1

Can someone help on this?
This is the script I use to save my photos after processing. It works very well, but it is a one shot script.
If I modify the photo after having saved it, the script won’t save the photo a second time.
So, what did I miss or did wrong?

const fileToken = async (format) => {

var saveFolder = await require("uxp").storage.localFileSystem.getFolder();
var saveFile = await saveFolder.createFile(`${docNameNoExt}.tif`);
var saveFileToken = await require("uxp").storage.localFileSystem.createSessionToken(saveFile);
await saveTIF(saveFileToken);

async function saveTIF(fileToken){

await batchPlay(
[
   {
      "_obj": "save",
      "as": {
         "_obj": "TIFF",
         "byteOrder": {
            "_enum": "platform",
            "_value": "IBMPC"
         },
         "LZWCompression": true,
         "saveTransparency": true,
         "layerCompression": {
            "_enum": "encoding",
            "_value": "RLE"
         }
      },
      "in": {
         "_path": fileToken,
         "_kind": "local"
      },
			"copy": false,
			 "documentID": docId,
      "lowerCase": true,
      "saveStage": {
         "_enum": "saveStageType",
         "_value": "saveBegin"
      },
      "_isCommand": true,
      "_options": {
         "dialogOptions": "display"
      }
   },
   {
      "_obj": "save",
      "as": {
         "_obj": "TIFF",
         "byteOrder": {
            "_enum": "platform",
            "_value": "IBMPC"
         }
      },
      "in": {
         "_path": tifFileToken,
         "_kind": "local"
      },
      "documentID": docId,
      "lowerCase": true,
      "saveStage": {
         "_enum": "saveStageType",
         "_value": "saveSucceeded"
      },
      "_isCommand": false,
      "_options": {
         "dialogOptions": "display"
      }
   }
],{
   "synchronousExecution": false,
   "modalBehavior": "fail"
});
}
}
2

tifFileToken Is not defined.
You don’t need the part :

{
“_obj”: “save”,
“as”: {
“_obj”: “TIFF”,
“byteOrder”: {
“_enum”: “platform”,
“_value”: “IBMPC”
}
},
“in”: {
“_path”: tifFileToken,
“_kind”: “local”
},
“documentID”: docId,
“lowerCase”: true,
“saveStage”: {
“_enum”: “saveStageType”,
“_value”: “saveSucceeded”
},
“_isCommand”: false,
“_options”: {
“dialogOptions”: “display”
}
}

3

Thanks,
I thought so.

4 
// To save a document in the same location

document.save()

https://www.adobe.io/photoshop/uxp/ps_reference/classes/document/#save

5

Sorry I though it could be done