What's up with vue/experimental-script-setup-vars?

[FloEdelmann]

The vue/experimental-script-setup-vars rule was deprecated in #1528 (first released in v7.13.0), but without any explanation or replacement rule.

It seems like vue/script-setup-uses-vars (added in #1529, will be deprecated in #1849) is actually the replacement rule, as it was also first released in v7.13.0.

However, in tests/lib/script-setup.js, vue/experimental-script-setup-vars is still hardcoded. When I try to replace it with vue/script-setup-uses-vars there, the test fails:

  1) script-setup test cases
       temporary supports.
         should not be marked.:

      AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:

+ expected
- actual

+[]
-[
-  {
-    "column": 37
-    "endColumn": 42
-    "endLine": 5
-    "line": 5
-    "message": "'props' is not defined."
-    "messageId": "undef"
-    "nodeType": "Identifier"
-    "ruleId": "no-undef"
-    "severity": 2
-  }
-  {
-    "column": 7
-    "endColumn": 11
-    "endLine": 6
-    "line": 6
-    "message": "'emit' is not defined."
-    "messageId": "undef"
-    "nodeType": "Identifier"
-    "ruleId": "no-undef"
-    "severity": 2
-  }
-]

CC @ota-meshi

[FloEdelmann]

It seems like the syntax in the test is an early version of the <script setup> RFC:

eslint-plugin-vue/tests/lib/script-setup.js

Lines 39 to 44 in 9344af8

	<script setup="props, { emit }">
	import { watchEffect } from 'vue'
	watchEffect(() => console.log(props.msg))
	emit('foo')
	</script>`

https://vuejs.org/api/sfc-script-setup.html has no references to <script setup="props"> anymore.

Since vue/script-setup-uses-vars has its own tests, I guess we can just delete tests/lib/script-setup.js then?

[ota-meshi]

As you say, vue/script-setup-uses-vars is rule for syntax (as an experimental feature) that was available early in Vue v3.0.
I think we can remove tests/lib/script-setup.js.

[FloEdelmann]

Alright, the test will be removed in #1881.