After endless search I found this article. A lifesaver! Thanks

FWIW this line did the job 

```
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": true,
  },
```

versus what I had didnt work

```
  "[vue]": {
    "editor.defaultFormatter": "dbaeumer.vscode-eslint",
    "editor.formatOnSave": true
  },
  "[javascript]": {
    "editor.defaultFormatter": "dbaeumer.vscode-eslint",
    "editor.formatOnSave": true
  },

```