chore: upgrade eslint releated deps and fix eslint errors

.vscode/settings.json

@@ -8,9 +8,10 @@
   "editor.formatOnPaste": true,
   "editor.formatOnType": true,
   "editor.codeActionsOnSave": {
-    "source.fixAll.eslint": "explicit"
+    "source.fixAll.eslint": "explicit",
+    "source.organizeImports": "always"
   },
-  "eslint.experimental.useFlatConfig": true,
+  "eslint.useFlatConfig": true,
   "typescript.tsdk": "node_modules/typescript/lib",
   "volar.tsPlugin": true
 }

eslint.config.mjs

@@ -1,26 +1,10 @@
-import globals from 'globals'
 import js from '@eslint/js'
-import ts from 'typescript-eslint'
 import pritter from 'eslint-config-prettier'
 import vue from 'eslint-plugin-vue'
+import globals from 'globals'
+import ts from 'typescript-eslint'
 
 export default [
-  // ignore globally
-  {
-    ignores: [
-      '**/dist/**',
-      '**/fixtures/**',
-      '**/coverage/**',
-      '**/.vitepress/**',
-      '**/.vuepress/**',
-      '**/test/**',
-      '**/examples/**',
-      'shim.d.ts',
-      '.eslintcache',
-      '.eslintrc.cjs'
-    ]
-  },
-
   // globals
   {
     // files: ['**/*.js', '**/*.ts', '**/*.vue', '**/*.json'],
@@ -87,10 +71,33 @@ export default [
       '@typescript-eslint/no-use-before-define': 'off',
       '@typescript-eslint/no-var-requires': 'off',
       '@typescript-eslint/no-non-null-assertion': 'off',
+      '@typescript-eslint/no-empty-object-type': 'off', // FIXME: enable this rule
+      '@typescript-eslint/no-unused-expressions': 'off',
+      '@typescript-eslint/only-throw-error': 'off',
+      '@typescript-eslint/no-unsafe-function-type': 'off',
       'vue/one-component-per-file': 'off',
       'vue/multi-word-component-names': 'off',
       'vue/experimental-script-setup-vars': 'off',
       'vue/no-deprecated-props-default-this': 'off'
     }
+  },
+
+  // ignore globally
+  {
+    ignores: [
+      '**/dist/**',
+      '**/fixtures/**',
+      '**/coverage/**',
+      '**/.vitepress/**',
+      '**/.vuepress/**',
+      '**/test/**',
+      '**/examples/**',
+      'shim.d.ts',
+      '.eslintcache',
+      '.eslintrc.cjs',
+      'packages/*/index.js',
+      'docsgen.config.js',
+      'scripts/api/*.js'
+    ]
   }
 ]

package.json

@@ -71,7 +71,7 @@
     "test:unit": "cross-env TZ=UTC vitest run -c ./vitest.unit.config.ts"
   },
   "devDependencies": {
-    "@eslint/js": "^9.0.0",
+    "@eslint/js": "^9.9.1",
     "@intlify/core-base": "workspace:*",
     "@intlify/message-compiler": "workspace:*",
     "@microsoft/api-extractor": "7.15.2",
@@ -83,24 +83,24 @@
     "@secretlint/secretlint-rule-preset-recommend": "^3.1.0",
     "@textlint-rule/textlint-rule-no-unmatched-pair": "^2.0.0",
     "@types/brotli": "^1.3.4",
-    "@types/eslint": "^8.56.7",
+    "@types/eslint": "^9.6.1",
     "@types/js-yaml": "^4.0.5",
     "@types/jsdom": "^21.1.1",
     "@types/minimist": "^1.2.5",
-    "@types/node": "^20.11.21",
+    "@types/node": "^22.5.3",
     "@types/rc": "^1.2.4",
     "@vitest/coverage-v8": "^2.0.0",
     "api-docs-gen": "^0.4.0",
     "benchmark": "^2.1.4",
     "brotli": "^1.3.2",
     "bumpp": "^9.3.0",
     "cross-env": "^7.0.3",
-    "eslint": "^9.1.0",
+    "eslint": "^9.9.1",
     "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-vue": "^9.25.0",
+    "eslint-plugin-vue": "^9.28.0",
     "execa": "^5.0.0",
     "fixpack": "^4.0.0",
-    "globals": "^15.0.0",
+    "globals": "^15.9.0",
     "globby": "^14.0.1",
     "js-yaml": "^4.1.0",
     "jsdom": "^24.0.0",
@@ -114,7 +114,7 @@
     "picocolors": "^1.0.0",
     "pkg-pr-new": "^0.0.20",
     "playwright-core": "^1.45.3",
-    "prettier": "^3.2.5",
+    "prettier": "^3.3.3",
     "rc": "^1.2.8",
     "rimraf": "^6.0.0",
     "rollup": "^3.29.2",
@@ -144,7 +144,7 @@
     "tslib": "^2.6.2",
     "tsx": "^4.11.2",
     "typescript": "^5.3.3",
-    "typescript-eslint": "^7.5.0",
+    "typescript-eslint": "^8.4.0",
     "vitepress": "1.3.4",
     "vitest": "^2.0.4",
     "vue": "3.4.38",

packages/core-base/src/compilation.ts

@@ -1,19 +1,19 @@
-import { warn, format, isObject, isBoolean, isString } from '@intlify/shared'
 import {
   baseCompile as baseCompileCore,
   defaultOnError,
   detectHtmlTag
 } from '@intlify/message-compiler'
+import { format, isBoolean, isObject, isString, warn } from '@intlify/shared'
 import { format as formatMessage } from './format'
 
 import type {
-  CompileOptions,
   CompileError,
+  CompileOptions,
   CompilerResult,
   ResourceNode
 } from '@intlify/message-compiler'
-import type { MessageFunction, MessageFunctions } from './runtime'
 import type { MessageCompilerContext } from './context'
+import type { MessageFunction, MessageFunctions } from './runtime'
 
 const WARN_MESSAGE = `Detected HTML in '{source}' message. Recommend not using HTML messages to avoid XSS.`
 
@@ -71,6 +71,7 @@ export function compile<
     const warnHtmlMessage = isBoolean(context.warnHtmlMessage)
       ? context.warnHtmlMessage
       : true
+
     __DEV__ && checkHtmlMessage(message, warnHtmlMessage)
 
     // check caches

packages/core-base/src/context.ts

@@ -1,53 +1,53 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
 import {
-  warn,
-  isString,
+  assign,
   isArray,
   isBoolean,
-  isRegExp,
   isFunction,
-  isPlainObject,
-  assign,
   isObject,
+  isPlainObject,
+  isRegExp,
+  isString,
+  warn,
   warnOnce
 } from '@intlify/shared'
 import { initI18nDevTools } from './devtools'
-import { CoreWarnCodes, getWarnMessage } from './warnings'
-import { resolveWithKeyValue } from './resolver'
 import { fallbackWithSimple } from './fallbacker'
+import { resolveWithKeyValue } from './resolver'
+import { CoreWarnCodes, getWarnMessage } from './warnings'
 
-import type { CompileOptions, ResourceNode } from '@intlify/message-compiler'
 import type { VueDevToolsEmitter } from '@intlify/devtools-types'
-import type { Path, MessageResolver } from './resolver'
+import type { CompileOptions, ResourceNode } from '@intlify/message-compiler'
+import type { LocaleFallbacker } from './fallbacker'
+import type { MessageResolver, Path } from './resolver'
 import type {
-  Locale,
-  LocaleDetector,
-  FallbackLocale,
   CoreMissingType,
+  FallbackLocale,
   LinkedModifiers,
-  PluralizationRules,
-  MessageProcessor,
+  Locale,
+  LocaleDetector,
   MessageFunction,
   MessageFunctionReturn,
-  MessageType
+  MessageProcessor,
+  MessageType,
+  PluralizationRules
 } from './runtime'
 import type {
-  UnionToTuple,
+  DateTimeFormat,
+  DateTimeFormats as DateTimeFormatsType,
+  FallbackLocales,
+  IsEmptyObject,
   IsNever,
+  LocaleParams,
   LocaleRecord,
   NumberFormat,
-  DateTimeFormat,
-  DateTimeFormats as DateTimeFormatsType,
   NumberFormats as NumberFormatsType,
-  SchemaParams,
-  LocaleParams,
   PickupLocales,
-  FallbackLocales,
-  IsEmptyObject,
-  RemoveIndexSignature
+  RemoveIndexSignature,
+  SchemaParams,
+  UnionToTuple
 } from './types'
-import type { LocaleFallbacker } from './fallbacker'
 
 export interface MetaInfo {
   [field: string]: unknown

packages/core-base/src/datetime.ts

@@ -1,32 +1,32 @@
 import {
-  isString,
+  assign,
   isBoolean,
-  isPlainObject,
   isDate,
-  isNumber,
   isEmptyObject,
-  assign
+  isNumber,
+  isPlainObject,
+  isString
 } from '@intlify/shared'
 import {
   handleMissing,
   isTranslateFallbackWarn,
-  NOT_REOSLVED,
-  MISSING_RESOLVE_VALUE
+  MISSING_RESOLVE_VALUE,
+  NOT_REOSLVED
 } from './context'
-import { CoreWarnCodes, getWarnMessage } from './warnings'
 import { CoreErrorCodes, createCoreError } from './errors'
 import { getLocale } from './fallbacker'
 import { Availabilities } from './intl'
+import { CoreWarnCodes, getWarnMessage } from './warnings'
 
-import type { Locale, FallbackLocale } from './runtime'
+import type { CoreContext, CoreInternalContext } from './context'
+import type { LocaleOptions } from './fallbacker'
+import type { FallbackLocale, Locale } from './runtime'
 import type {
   DateTimeFormat,
-  DateTimeFormats as DateTimeFormatsType,
   DateTimeFormatOptions,
+  DateTimeFormats as DateTimeFormatsType,
   PickupFormatKeys
 } from './types/index'
-import type { LocaleOptions } from './fallbacker'
-import type { CoreContext, CoreInternalContext } from './context'
 
 /**
  *  # datetime
@@ -345,7 +345,7 @@ export function parseDateTimeArgs(
     try {
       // This will fail if the date is not valid
       value.toISOString()
-    } catch (e) {
+    } catch {
       throw createCoreError(CoreErrorCodes.INVALID_ISO_DATE_ARGUMENT)
     }
   } else if (isDate(arg1)) {

packages/core-base/src/devtools.ts

@@ -1,7 +1,7 @@
 import type {
-  IntlifyDevToolsHooks,
+  IntlifyDevToolsEmitter,
   IntlifyDevToolsHookPayloads,
-  IntlifyDevToolsEmitter
+  IntlifyDevToolsHooks
 } from '@intlify/devtools-types'
 
 let devtools: IntlifyDevToolsEmitter | null = null
@@ -20,6 +20,7 @@ export function initI18nDevTools(
   meta?: Record<string, unknown>
 ): void {
   // TODO: queue if devtools is undefined
+
   devtools &&
     devtools.emit('i18n:init', {
       timestamp: Date.now(),

packages/core-base/src/runtime.ts

@@ -1,15 +1,15 @@
+import { HelperNameMap } from '@intlify/message-compiler'
 import {
   assign,
-  isNumber,
+  isArray,
   isFunction,
-  toDisplayString,
+  isNumber,
   isObject,
-  isString,
-  isArray,
   isPlainObject,
-  join
+  isString,
+  join,
+  toDisplayString
 } from '@intlify/shared'
-import { HelperNameMap } from '@intlify/message-compiler'
 import { Path } from './resolver'
 import { IsNever } from './types'
 
@@ -369,6 +369,7 @@ export function createMessageContext<T = string, N = {}>(
 
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   const _named = options.named || ({} as any)
+
   isNumber(options.pluralIndex) && normalizeNamed(pluralIndex, _named)
   const named = (key: string): unknown => _named[key]
 

packages/devtools-types/src/index.ts

@@ -12,7 +12,7 @@ export interface IntlifyRecord {
   id: number
   i18n: unknown // TODO:
   version: string
-  types: Record<string, string | Symbol> // TODO
+  types: Record<string, string | symbol> // TODO
 }
 
 export type IntlifyDevToolsHooks = 'i18n:init' | 'function:translate'