Ref with custom setter. type error

[teleskop150750]

Vue - Official extension or vue-tsc version

2.1.6

VSCode version

1.93.1

Vue version

3.5.10

TypeScript version

5.6.2

System Info

System:
  OS: Linux 6.8 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
  CPU: (12) x64 12th Gen Intel(R) Core(TM) i5-12400
  Memory: 3.29 GB / 15.38 GB
  Container: Yes
  Shell: 3.7.1 - /usr/bin/fish
Binaries:
  Node: 20.15.1 - /run/user/1000/fnm_multishells/584511_1727791231236/bin/node
  npm: 10.7.0 - /run/user/1000/fnm_multishells/584511_1727791231236/bin/npm
  pnpm: 9.11.0 - /run/user/1000/fnm_multishells/584511_1727791231236/bin/pnpm
Browsers:
  Chrome: 129.0.6668.7011

package.json dependencies

No response

Steps to reproduce

What is expected?

Success

What is actually happening?

Error:
Property 'bar' does not exist on type 'string | Record<string, any>'.
Property 'bar' does not exist on type 'string'.ts-plugin(2339)

Link to minimal reproduction

Playground

Any additional comments?

No response