`vue/no-unused-emit-declarations` would throw Error when using dynamic render

[ntnyq]

Checklist

• I have tried restarting my IDE and the issue persists.
• I have read the FAQ and my problem is not listed.

Tell us about your environment

• ESLint version: 8.56.0
• eslint-plugin-vue version: 9.21.0
• Vue version: 3.4.15
• Node version: 18.18.2
• Operating System: MacOS

Please show your full configuration:

module.exports = {
  root: true,
  extends: ['plugin:vue/vue3-essential', 'eslint:recommended'],
  parserOptions: {
    ecmaVersion: 'latest',
  },
  rules: {
    'vue/no-unused-emit-declarations': 'error',
  },
}

What did you do?

<script>
import { defineComponent, h } from 'vue'

export default defineComponent({
  emits: ['update'],

  setup(_, ctx) {
    return () =>
      h(
        'button',
        {
          type: 'button',
          onClick: () => ctx.emit('update'),
        },
        'Click me!',
      )
  },
})
</script>

What did you expect to happen?

Lint works well.

What actually happened?

TypeError: Cannot read properties of undefined (reading 'name')
Occurred while linting /Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/src/VButton.vue:9
Rule: "vue/no-unused-emit-declarations"
    at isEmitVariableName (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint-plugin-vue@9.21.0_eslint@8.56.0/node_modules/eslint-plugin-vue/lib/rules/no-unused-emit-declarations.js:66:62)
    at Object.CallExpression (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint-plugin-vue@9.21.0_eslint@8.56.0/node_modules/eslint-plugin-vue/lib/rules/no-unused-emit-declarations.js:209:13)
    at callVisitor (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint-plugin-vue@9.21.0_eslint@8.56.0/node_modules/eslint-plugin-vue/lib/utils/index.js:1215:21)
    at vueVisitor.<computed> (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint-plugin-vue@9.21.0_eslint@8.56.0/node_modules/eslint-plugin-vue/lib/utils/index.js:1222:35)
    at ruleErrorHandler (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint@8.56.0/node_modules/eslint/lib/linter/linter.js:1076:28)
    at /Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint@8.56.0/node_modules/eslint/lib/linter/safe-emitter.js:45:58
    at Array.forEach (<anonymous>)
    at Object.emit (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint@8.56.0/node_modules/eslint/lib/linter/safe-emitter.js:45:38)
    at NodeEventGenerator.applySelector (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint@8.56.0/node_modules/eslint/lib/linter/node-event-generator.js:297:26)
    at NodeEventGenerator.applySelectors (/Users/ntnyq/Desktop/github/ntnyq/repro-eslint-plugin-vue/node_modules/.pnpm/eslint@8.56.0/node_modules/eslint/lib/linter/node-event-generator.js:326:22)

Repository to reproduce this issue

https://github.com/ntnyq-dev/repro-no-unused-emit-declarations

Additional text

#2340 introduced a function isEmitVariableName.

emitReferenceIds may be an empty Set.