Rule "variable-name" is ignored in .vue files

[r0skar]

I have this option in the tslint.json file:

"variable-name": [true, "ban-keywords", "check-format", "allow-leading-underscore"],

I have this vue file:

<script lang="ts">
export default {
  methods: {
    sayHello(string: string) {
      return string
    }
  }
}
</script>

and this typescript file:

sayHello(string: string) {
  return string
}

VSCode shows no warning in the Vue file, however it shows the correct warning in the typescript file ([ts] 'string' only refers to a type, but is being used as a value here.).

How can I have the same behavior in the Vue file?