Sourced from vue-tsc's releases.

v3.0.0

[!IMPORTANT]
Deprecation Notice: Dropping Vue 2 and vue-class-component Support in v3.1: #5455

[!TIP]
Language Server Upgrade guide for none-vscode editors: #5456

Stability Improvements

• Hybrid Mode Always On: Now always enabled to make the system simpler and more reliable. (PR: #5248)
• Better Connection: Improved how Vue talks to TypeScript server, making it more stable. (PR: #5252, #5395, #5443)
• Version Matching: Vue language server now requires specific Volar versions to work the same in all editors. (PR: #5345)
• Fixed Startup Issue: Solved problems when both TypeScript and Vue extensions start together. (PR: #5260)

UX & DX Improvements

Navigation & Tooling

• Global components now jump to their source files rather than type definitions. (PR: #5221)
• Added support for TypeScript's sortImports and removeUnusedImports commands. (PR: #5444)
• Implemented template refs document linking. (PR: #5385)

Localization Support

• VSCode extension added multilingual support for:
  • Chinese (Simplified/Traditional)
  • Russian
  • Japanese

(PR: #5330, #5340, #5404)

Streamlined UI

• v3 does not have any status bar items

Compiler Options Updates

New TSConfig options:

• strictSlotChildren: Strict type constraints of slot children. (PR: #5137)
• strictVModel: Strict type constraints of v-model. (PR: #5229)
• strictCssModules: Strict type checking of CSS modules. (PR: #5164)
• resolveStyleImports: Specifies whether to generate type imports for external CSS files by <style src=\"...\"> or @import \"...\". (PR: #5136)

Renamed Settings

Some settings have new names:

• vue.complete.casing.props → vue.suggest.propNameCasing
• vue.complete.casing.tags → vue.suggest.componentNameCasing
• vue.complete.defineAssignment → vue.suggest.defineAssignment

Details

... (truncated)

Sourced from vue-tsc's changelog.

3.0.0 (2025-06-25)

Features

• feat(typescript-plugin): skip declaration files in goto components definition (#5221) - Thanks to @​KazariEX!
• feat(language-core): introduce strictVModel option (#5229) - Thanks to @​KazariEX!
• feat(vscode, language-server, typescript-plugin): communicate with tsserver based on request forwarding (#5252, #5395, #5443)
• feat(language-core): support navigation of events with v-on syntax (#5275) - Thanks to @​KazariEX!
• feat(language-core): type support of slot children (#5137) - Thanks to @​KazariEX!
• feat(language-service): autocomplete for props with union type
• feat(language-service): document links for template refs (#5385) - Thanks to @​alex-snezhko!
• feat(language-core): resolve external stylesheets (#5136) - Thanks to @​KazariEX!
• feat(language-core): add strictCssModules option (#5164) - Thanks to @​KazariEX!
• feat(component-type-helpers): add ComponentAttrs type for attribute extraction
• feat(vscode): add support for typescript.sortImports, typescript.removeUnusedImports commands (#5444)
• feat(vscode): i18n support of configurations and commands with zh-CN, zh-TW, ru and ja (#5330, #5340, #5404) - Thanks to @​KazariEX, @​PurplePlanen and @​zyoshoka!

Bug Fixes

• fix(language-core): generate condition guards for model events (#5225) - Thanks to @​KazariEX!
• fix(language-core): prevent global types generation in declaration files (#5239) - Thanks to @​KazariEX!
• fix(language-core): prevent eager inference of slot props from generics (#5247) - Thanks to @​KazariEX!
• fix(typescript-plugin): prevent highlighting native element tags with same name as components (#5253) - Thanks to @​KazariEX!
• fix(language-service): do not provide required props inlay hints for intrinsic elements (#5258) - Thanks to @​KazariEX!
• fix(vscode): handle typescript-language-features module loading race condition (#5260)
• fix(component-meta): update event type representation to include array notation
• fix(language-core): correct error mapping when prop exp is arrow function (#5262) - Thanks to @​KazariEX!
• fix(language-service): add document highlights support (#5263) - Thanks to @​KazariEX!
• fix(language-core): correct type inference of multiple template refs with same name (#5271) - Thanks to @​KazariEX!
• fix(language-core): skip AST parsing when the expression is an identifier (#5268) - Thanks to @​KazariEX!
• fix(language-core): do not drop leading comments of defineModels (#5273) - Thanks to @​KazariEX!
• fix(language-core): improve fault tolerance for unsupported script languages
• fix(language-core): avoid invalid auto import edit position when setup global types fails
• fix(language-core): transform slot parameter list into equivalent binding pattern (#5245) - Thanks to @​KazariEX!
• fix(language-core): correct codegen when src path does not match the generated length - Thanks to @​KazariEX!
• fix(language-service): exclude data- attribute completion from sfc level nodes - Thanks to @​KazariEX!
• fix(language-core): remove semantic highlight of v-bind shorthand (#5321) - Thanks to @​KazariEX!
• fix(vscode): inline html comment pattern in Vue syntax definition (#5327) - Thanks to @​zyoshoka!
• fix(language-core): avoid unrelated virtual code recomputes on style and template change - Thanks to @​KazariEX!
• fix(component-meta): attach namespace prefix correctly on generated types (#5326) - Thanks to @​KazariEX!
• fix(language-core): drop undefined from optional prop type with default in template (#5339) - Thanks to @​Dylancyclone!
• fix: depend on exact volar version (#5345) - Thanks to @​tomblachut!
• fix(language-core): ignore frontmatter block in markdown files (#5362) - Thanks to @​brc-dd!
• fix(component-meta): only exclude vnode events from props (#5369) - Thanks to @​KazariEX!
• fix(language-core): skip css references for position within virtual code with navigation: true (#5378) - Thanks to @​KazariEX!
• fix(language-core): hoist export declarations from generic script block (#5398) - Thanks to @​KazariEX!
• fix(vscode): correct syntax highlight for directives starting with v-for (#5399) - Thanks to @​KazariEX!
• fix(language-core): correct support for flatten plugins (#5392) - Thanks to @​zhiyuanzmj!
• fix(language-core): remove semantic code feature on first argument of useCssModule and useTemplateRef - Thanks to @​KazariEX!
• fix(typescript-plugin): filter completion items of macros and global variables in template and styles (#5425) - Thanks to @​KazariEX!

... (truncated)

• c685175 v3.0.0 (#5449)
• c8bfce4 chore: update volar to 2.4.16
• fa49a70 docs: update readme files
• 3a46489 v3.0.0-beta.5
• 5cb41fa v3.0.0-beta.4
• 1f41b16 chore: update volar to 2.4.15
• 5019f99 test: update snapshots
• e85556a ci(lint): auto-fix
• 4fef5b1 v3.0.0-beta.3
• 7c53715 fix(language-core): Prettify\<T> breaks generics inferencing (#5424)
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