Indentation width

tabWidth controls the number of spaces per indentation level. Its default is 2. Set it in the existing formatter configuration:

{
  "formatter": {
    "tabWidth": 3
  }
}

For <template><p>hello</p></template>, this produces:

<template>
   <p>hello</p>
</template>

useTabs: true selects tabs for indentation instead. Quote preferences keep their existing behavior. Whitespace inside raw template regions such as <pre>, <textarea> and v-pre retains its authored bytes.