Drop support for vue-i18n v8 syntax

.changeset/cyan-needles-sniff.md

@@ -0,0 +1,5 @@
+---
+"@intlify/eslint-plugin-vue-i18n": major
+---
+
+Drop support for vue-i18n v8 syntax

docs/.vitepress/components/eslint-code-block.vue

@@ -58,7 +58,7 @@ export default {
     },
     messageSyntaxVersion: {
       type: String,
-      default: '^9'
+      default: '^11'
     }
   },
 

docs/started.md

@@ -73,7 +73,7 @@ export default [
 
         // Specify the version of `vue-i18n` you are using.
         // If not specified, the message will be parsed twice.
-        messageSyntaxVersion: '^9.0.0'
+        messageSyntaxVersion: '^11.0.0'
       }
     }
   }
@@ -144,7 +144,7 @@ module.exports = {
 
       // Specify the version of `vue-i18n` you are using.
       // If not specified, the message will be parsed twice.
-      messageSyntaxVersion: '^9.0.0'
+      messageSyntaxVersion: '^11.0.0'
     }
   }
 }

lib/rules/prefer-linked-key-with-paren.ts

@@ -19,7 +19,6 @@ import {
   NodeTypes
 } from '../utils/message-compiler/utils'
 import { parse } from '../utils/message-compiler/parser'
-import { parse as parseForV8 } from '../utils/message-compiler/parser-v8'
 import { traverseNode } from '../utils/message-compiler/traverser'
 import { getFilename, getSourceCode } from '../utils/compat'
 
@@ -42,7 +41,7 @@ function create(context: RuleContext): RuleListener {
   const sourceCode = getSourceCode(context)
   const messageSyntaxVersions = getMessageSyntaxVersions(context)
 
-  function verifyForNewSyntax(
+  function verifySyntax(
     message: string,
     reportNode: JSONAST.JSONStringLiteral | YAMLAST.YAMLScalar,
     getReportOffset: GetReportOffset
@@ -83,49 +82,6 @@ function create(context: RuleContext): RuleListener {
     })
   }
 
-  function verifyForV8(
-    message: string,
-    reportNode: JSONAST.JSONStringLiteral | YAMLAST.YAMLScalar,
-    getReportOffset: GetReportOffset
-  ) {
-    const { ast, errors } = parseForV8(message)
-    if (errors.length) {
-      return
-    }
-    traverseNode(ast, node => {
-      if (node.type !== NodeTypes.LinkedKey) {
-        return
-      }
-      if (message[node.loc!.start.offset - 1] === '(') {
-        return
-      }
-      let range: [number, number] | null = null
-      const start = getReportOffset(node.loc!.start.offset)
-      const end = getReportOffset(node.loc!.end.offset)
-      if (start != null && end != null) {
-        range = [start, end]
-      }
-      context.report({
-        loc: range
-          ? {
-              start: sourceCode.getLocFromIndex(range[0]),
-              end: sourceCode.getLocFromIndex(range[1])
-            }
-          : reportNode.loc,
-        message: 'The linked message key must be enclosed in parentheses.',
-        fix(fixer) {
-          if (!range) {
-            return null
-          }
-          return [
-            fixer.insertTextBeforeRange(range, '('),
-            fixer.insertTextAfterRange(range, ')')
-          ]
-        }
-      })
-    })
-  }
-
   function verifyMessage(
     message: string,
     reportNode: JSONAST.JSONStringLiteral | YAMLAST.YAMLScalar,
@@ -134,18 +90,8 @@ function create(context: RuleContext): RuleListener {
     if (messageSyntaxVersions.reportIfMissingSetting()) {
       return
     }
-    const newSyntax = messageSyntaxVersions.v9 || messageSyntaxVersions.v10
-    const v8Syntax = messageSyntaxVersions.v8
-    if (newSyntax && v8Syntax) {
-      // This rule cannot support two versions in the same project.
-      return
-    }
 
-    if (newSyntax) {
-      verifyForNewSyntax(message, reportNode, getReportOffset)
-    } else if (v8Syntax) {
-      verifyForV8(message, reportNode, getReportOffset)
-    }
+    verifySyntax(message, reportNode, getReportOffset)
   }
 
   const createVisitorForJson = defineCreateVisitorForJson(verifyMessage)

lib/rules/valid-message-syntax.ts

@@ -15,7 +15,6 @@ import {
 } from '../utils/message-compiler/utils'
 import { parse } from '../utils/message-compiler/parser'
 import { parse as parseForV9 } from '../utils/message-compiler/parser-v9'
-import { parse as parseForV8 } from '../utils/message-compiler/parser-v8'
 import type { CompileError } from '@intlify/message-compiler'
 import { createRule } from '../utils/rule'
 import { getFilename, getSourceCode } from '../utils/compat'
@@ -28,19 +27,15 @@ function create(context: RuleContext): RuleListener {
   const messageSyntaxVersions = getMessageSyntaxVersions(context)
 
   function* extractMessageErrors(message: string) {
-    // v10 and v9 generate nearly identical errors so only one of them will be returned.
-    const errorsForV10OrV9: CompileError[] = []
-    if (messageSyntaxVersions.v10) {
-      errorsForV10OrV9.push(...parse(message).errors)
+    // v10/v11 and v9 generate nearly identical errors so only one of them will be returned.
+    const errors: CompileError[] = []
+    if (messageSyntaxVersions.v10 || messageSyntaxVersions.v11) {
+      errors.push(...parse(message).errors)
     }
-    if (messageSyntaxVersions.v9 && !errorsForV10OrV9.length) {
-      errorsForV10OrV9.push(...parseForV9(message).errors)
-    }
-    yield* errorsForV10OrV9
-
-    if (messageSyntaxVersions.v8) {
-      yield* parseForV8(message).errors
+    if (messageSyntaxVersions.v9 && !errors.length) {
+      errors.push(...parseForV9(message).errors)
     }
+    yield* errors
   }
   function verifyMessage(
     message: string | number | undefined | null | boolean | bigint | RegExp,

lib/utils/collect-linked-keys.ts

@@ -7,7 +7,6 @@ import { traverseNode } from './message-compiler/traverser'
 import type { I18nLocaleMessageDictionary, RuleContext } from '../types'
 import { parse } from './message-compiler/parser'
 import { parse as parseForV9 } from './message-compiler/parser-v9'
-import { parse as parseForV8 } from './message-compiler/parser-v8'
 import type { MessageSyntaxVersions } from './message-compiler/utils'
 import { NodeTypes } from './message-compiler/utils'
 import { getMessageSyntaxVersions } from './message-compiler/utils'
@@ -28,15 +27,12 @@ function* extractUsedKeysFromLinks(
     if (typeof value === 'object') {
       yield* extractUsedKeysFromLinks(value, messageSyntaxVersions)
     } else if (typeof value === 'string') {
-      if (messageSyntaxVersions.v10) {
+      if (messageSyntaxVersions.v10 || messageSyntaxVersions.v11) {
         yield* extractUsedKeysFromAST(parse(value).ast)
       }
       if (messageSyntaxVersions.v9) {
         yield* extractUsedKeysFromAST(parseForV9(value).ast)
       }
-      if (messageSyntaxVersions.v8) {
-        yield* extractUsedKeysFromAST(parseForV8(value).ast)
-      }
     }
   }
 }