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Description
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.