feat: add support for eslint v9

.changeset/shiny-colts-search.md

@@ -0,0 +1,5 @@
+---
+"@intlify/eslint-plugin-vue-i18n": minor
+---
+
+feat: add support for eslint v9

.eslintrc.cjs

@@ -20,7 +20,42 @@ module.exports = {
   rules: {
     'object-shorthand': 'error',
     'no-debugger': 'error',
-    'vue/multi-word-component-names': 'off'
+    'vue/multi-word-component-names': 'off',
+
+    'prefer-template': 'error',
+    'no-restricted-properties': [
+      'error',
+      {
+        object: 'context',
+        property: 'getSourceCode',
+        message: 'Use lib/utils/compat.ts'
+      },
+      {
+        object: 'context',
+        property: 'getFilename',
+        message: 'Use lib/utils/compat.ts'
+      },
+      {
+        object: 'context',
+        property: 'getPhysicalFilename',
+        message: 'Use lib/utils/compat.ts'
+      },
+      {
+        object: 'context',
+        property: 'getCwd',
+        message: 'Use lib/utils/compat.ts'
+      },
+      {
+        object: 'context',
+        property: 'getScope',
+        message: 'Use lib/utils/compat.ts'
+      },
+      {
+        object: 'context',
+        property: 'parserServices',
+        message: 'Use lib/utils/compat.ts'
+      }
+    ]
   },
   overrides: [
     {

.github/workflows/test.yml

@@ -56,8 +56,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        eslint: [5, 6, 7, 8]
-        node: [16]
+        eslint: [5, 6, 7, 8, ^9.0.0-0]
+        node: [20]
     steps:
       - name: Checkout
         uses: actions/checkout@v4

docs/.vitepress/components/resource-group.vue

@@ -14,7 +14,7 @@ export default {
     return {
       $resourceGroup: {
         async set(fileName, code) {
-          Vue.set(data.fileContents, '/path/' + fileName, code)
+          Vue.set(data.fileContents, `/path/${fileName}`, code)
 
           const timeSeq = ++waitSeq
           await Vue.nextTick()

lib/rules/key-format-style.ts

@@ -10,6 +10,7 @@ import type { RuleContext, RuleListener } from '../types'
 import { getCasingChecker } from '../utils/casing'
 import type { LocaleMessage } from '../utils/locale-messages'
 import { createRule } from '../utils/rule'
+import { getFilename, getSourceCode } from '../utils/compat'
 const debug = debugBuilder('eslint-plugin-vue-i18n:key-format-style')
 
 const allowedCaseOptions = [
@@ -21,7 +22,8 @@ const allowedCaseOptions = [
 type CaseOption = (typeof allowedCaseOptions)[number]
 
 function create(context: RuleContext): RuleListener {
-  const filename = context.getFilename()
+  const filename = getFilename(context)
+  const sourceCode = getSourceCode(context)
   const expectCasing: CaseOption = context.options[0] ?? 'camelCase'
   const checker = getCasingChecker(expectCasing)
   const allowArray: boolean = context.options[1]?.allowArray
@@ -115,7 +117,6 @@ function create(context: RuleContext): RuleListener {
         if (cachedLoc) {
           return cachedLoc
         }
-        const sourceCode = context.getSourceCode()
         return (cachedLoc = {
           start: sourceCode.getLocFromIndex(offset + start),
           end: sourceCode.getLocFromIndex(offset + end)
@@ -264,17 +265,20 @@ function create(context: RuleContext): RuleListener {
         return createVisitorForYaml(targetLocaleMessage)
       }
     )
-  } else if (context.parserServices.isJSON || context.parserServices.isYAML) {
+  } else if (
+    sourceCode.parserServices.isJSON ||
+    sourceCode.parserServices.isYAML
+  ) {
     const localeMessages = getLocaleMessages(context)
     const targetLocaleMessage = localeMessages.findExistLocaleMessage(filename)
     if (!targetLocaleMessage) {
       debug(`ignore ${filename} in key-format-style`)
       return {}
     }
 
-    if (context.parserServices.isJSON) {
+    if (sourceCode.parserServices.isJSON) {
       return createVisitorForJson(targetLocaleMessage)
-    } else if (context.parserServices.isYAML) {
+    } else if (sourceCode.parserServices.isYAML) {
       return createVisitorForYaml(targetLocaleMessage)
     }
     return {}

lib/rules/no-deprecated-i18n-component.ts

@@ -5,14 +5,16 @@ import { defineTemplateBodyVisitor } from '../utils/index'
 import type { RuleContext, RuleListener } from '../types'
 import type { AST as VAST } from 'vue-eslint-parser'
 import { createRule } from '../utils/rule'
+import { getSourceCode } from '../utils/compat'
 
 function create(context: RuleContext): RuleListener {
   return defineTemplateBodyVisitor(context, {
     VElement(node: VAST.VElement) {
       if (node.name !== 'i18n') {
         return
       }
-      const tokenStore = context.parserServices.getTemplateBodyTokenStore()
+      const sourceCode = getSourceCode(context)
+      const tokenStore = sourceCode.parserServices.getTemplateBodyTokenStore()
       const tagNameToken = tokenStore.getFirstToken(node.startTag)
       context.report({
         node: tagNameToken,

lib/rules/no-duplicate-keys-in-locale.ts

@@ -16,6 +16,7 @@ import type {
 import { joinPath } from '../utils/key-path'
 import { getCwd } from '../utils/get-cwd'
 import { createRule } from '../utils/rule'
+import { getFilename, getSourceCode } from '../utils/compat'
 const debug = debugBuilder('eslint-plugin-vue-i18n:no-duplicate-keys-in-locale')
 
 interface DictData {
@@ -34,13 +35,14 @@ interface PathStack {
 function getMessageFilepath(fullPath: string, context: RuleContext) {
   const cwd = getCwd(context)
   if (fullPath.startsWith(cwd)) {
-    return fullPath.replace(cwd + '/', './')
+    return fullPath.replace(`${cwd}/`, './')
   }
   return fullPath
 }
 
 function create(context: RuleContext): RuleListener {
-  const filename = context.getFilename()
+  const filename = getFilename(context)
+  const sourceCode = getSourceCode(context)
   const options = (context.options && context.options[0]) || {}
   const ignoreI18nBlock = Boolean(options.ignoreI18nBlock)
 
@@ -129,7 +131,7 @@ function create(context: RuleContext): RuleListener {
           }
           if (typeof value.value !== 'object') {
             reportFiles.push(
-              '"' + getMessageFilepath(value.source.fullpath, context) + '"'
+              `"${getMessageFilepath(value.source.fullpath, context)}"`
             )
           } else {
             nextOtherDictionaries.push({
@@ -145,7 +147,7 @@ function create(context: RuleContext): RuleListener {
             message: `duplicate key '${keyPathStr}' in '${pathStack.locale}'. ${
               reportFiles.length === 0
                 ? last
-                : reportFiles.join(', ') + ', and ' + last
+                : `${reportFiles.join(', ')}, and ${last}`
             } has the same key`,
             loc: reportNode.loc
           })
@@ -316,7 +318,7 @@ function create(context: RuleContext): RuleListener {
               lm => lm !== targetLocaleMessage
             )
         return createVisitorForJson(
-          ctx.getSourceCode(),
+          getSourceCode(ctx),
           targetLocaleMessage,
           otherLocaleMessages
         )
@@ -335,31 +337,33 @@ function create(context: RuleContext): RuleListener {
               lm => lm !== targetLocaleMessage
             )
         return createVisitorForYaml(
-          ctx.getSourceCode(),
+          getSourceCode(ctx),
           targetLocaleMessage,
           otherLocaleMessages
         )
       }
     )
-  } else if (context.parserServices.isJSON || context.parserServices.isYAML) {
+  } else if (
+    sourceCode.parserServices.isJSON ||
+    sourceCode.parserServices.isYAML
+  ) {
     const localeMessages = getLocaleMessages(context)
     const targetLocaleMessage = localeMessages.findExistLocaleMessage(filename)
     if (!targetLocaleMessage) {
       debug(`ignore ${filename} in no-duplicate-keys-in-locale`)
       return {}
     }
 
-    const sourceCode = context.getSourceCode()
     const otherLocaleMessages: LocaleMessage[] =
       localeMessages.localeMessages.filter(lm => lm !== targetLocaleMessage)
 
-    if (context.parserServices.isJSON) {
+    if (sourceCode.parserServices.isJSON) {
       return createVisitorForJson(
         sourceCode,
         targetLocaleMessage,
         otherLocaleMessages
       )
-    } else if (context.parserServices.isYAML) {
+    } else if (sourceCode.parserServices.isYAML) {
       return createVisitorForYaml(
         sourceCode,
         targetLocaleMessage,

lib/rules/no-dynamic-keys.ts

@@ -5,12 +5,13 @@ import { defineTemplateBodyVisitor, isStaticLiteral } from '../utils/index'
 import type { RuleContext, RuleListener } from '../types'
 import type { AST as VAST } from 'vue-eslint-parser'
 import { createRule } from '../utils/rule'
+import { getSourceCode } from '../utils/compat'
 
 function getNodeName(context: RuleContext, node: VAST.Node): string {
   if (node.type === 'Identifier') {
     return node.name
   }
-  const sourceCode = context.getSourceCode()
+  const sourceCode = getSourceCode(context)
   if (
     sourceCode.ast.range[0] <= node.range[0] &&
     node.range[1] <= sourceCode.ast.range[1]
@@ -20,7 +21,7 @@ function getNodeName(context: RuleContext, node: VAST.Node): string {
       .map(t => t.value)
       .join('')
   }
-  const tokenStore = context.parserServices.getTemplateBodyTokenStore()
+  const tokenStore = sourceCode.parserServices.getTemplateBodyTokenStore()
   return tokenStore
     .getTokens(node)
     .map(t => t.value)

lib/rules/no-html-messages.ts

@@ -10,6 +10,7 @@ import type { AST as YAMLAST } from 'yaml-eslint-parser'
 import type { RuleContext, RuleListener } from '../types'
 import { createRule } from '../utils/rule'
 import type { DefaultTreeAdapterMap } from 'parse5'
+import { getFilename, getSourceCode } from '../utils/compat'
 
 const debug = debugBuilder('eslint-plugin-vue-i18n:no-html-messages')
 
@@ -25,7 +26,8 @@ function findHTMLNode(node: DocumentFragment): Element | undefined {
 }
 
 function create(context: RuleContext): RuleListener {
-  const filename = context.getFilename()
+  const filename = getFilename(context)
+  const sourceCode = getSourceCode(context)
 
   /**
    * @param {JSONLiteral} node
@@ -97,14 +99,14 @@ function create(context: RuleContext): RuleListener {
         }
       }
     )
-  } else if (context.parserServices.isJSON) {
+  } else if (sourceCode.parserServices.isJSON) {
     if (!getLocaleMessages(context).findExistLocaleMessage(filename)) {
       return {}
     }
     return {
       JSONLiteral: verifyJSONLiteral
     }
-  } else if (context.parserServices.isYAML) {
+  } else if (sourceCode.parserServices.isYAML) {
     if (!getLocaleMessages(context).findExistLocaleMessage(filename)) {
       return {}
     }

lib/rules/no-missing-keys-in-other-locales.ts

@@ -14,12 +14,14 @@ import type {
 import type { LocaleMessage, LocaleMessages } from '../utils/locale-messages'
 import { joinPath } from '../utils/key-path'
 import { createRule } from '../utils/rule'
+import { getFilename, getSourceCode } from '../utils/compat'
 const debug = debugBuilder(
   'eslint-plugin-vue-i18n:no-missing-keys-in-other-locales'
 )
 
 function create(context: RuleContext): RuleListener {
-  const filename = context.getFilename()
+  const filename = getFilename(context)
+  const sourceCode = getSourceCode(context)
   const ignoreLocales: string[] = context.options[0]?.ignoreLocales || []
 
   function reportMissing(
@@ -307,17 +309,20 @@ function create(context: RuleContext): RuleListener {
         return createVisitorForYaml(targetLocaleMessage, localeMessages)
       }
     )
-  } else if (context.parserServices.isJSON || context.parserServices.isYAML) {
+  } else if (
+    sourceCode.parserServices.isJSON ||
+    sourceCode.parserServices.isYAML
+  ) {
     const localeMessages = getLocaleMessages(context)
     const targetLocaleMessage = localeMessages.findExistLocaleMessage(filename)
     if (!targetLocaleMessage) {
       debug(`ignore ${filename} in no-missing-keys-in-other-locales`)
       return {}
     }
 
-    if (context.parserServices.isJSON) {
+    if (sourceCode.parserServices.isJSON) {
       return createVisitorForJson(targetLocaleMessage, localeMessages)
-    } else if (context.parserServices.isYAML) {
+    } else if (sourceCode.parserServices.isYAML) {
       return createVisitorForYaml(targetLocaleMessage, localeMessages)
     }
     return {}