[v2.1.2] Type checking fails when `compilerOptions.skipLibCheck` is `false`

[shengslogar]

Vue - Official extension or vue-tsc version

2.1.2

VSCode version

N/A

Vue version

3.4.38

TypeScript version

5.4.5

System Info

System:
    OS: macOS 14.6.1
    CPU: (10) arm64 Apple M1 Max
    Memory: 3.39 GB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.14.0 - ~/.volta/tools/image/node/20.14.0/bin/node
    Yarn: 4.3.0 - ~/.volta/tools/image/yarn/4.3.0/bin/yarn
    npm: 10.7.0 - ~/.volta/tools/image/node/20.14.0/bin/npm
  Browsers:
    Chrome: 128.0.6613.86
    Safari: 17.6

package.json dependencies

{
  "dependencies": {
    "vue": "^3.4.29"
  },
  "devDependencies": {
    "@tsconfig/node20": "^20.1.4",
    "@types/node": "^20.14.5",
    "@vitejs/plugin-vue": "^5.0.5",
    "@vue/tsconfig": "^0.5.1",
    "npm-run-all2": "^6.2.0",
    "typescript": "~5.4.0",
    "vite": "^5.3.1",
    "vue-tsc": "^2.0.21"
  }
}

Steps to reproduce

1. Follow Vue quickstart to create a new project with TypeScript (I ran yarn dlx create-vue@latest)
2. Add "compilerOptions.skipLibCheck": false to tsconfig.app.json
3. Run package.json type-check script (yarn type-check)

What is expected?

No errors and a success message, e.g ✨ Done in 1.14s..

What is actually happening?

Type errors coming out of node_modules/vue/dist/__globaltypes_3.4_false.d.ts:

yarn run v1.22.19
$ vue-tsc --build --force
node_modules/vue/dist/__globaltypes_3.4_false.d.ts:2:1 - error TS1046: Top-level declarations in .d.ts files must start with either a 'declare' or 'export' modifier.

2 const __VLS_globalComponents = { ...{} as import('vue').GlobalComponents };
  ~~~~~

node_modules/vue/dist/__globaltypes_3.4_false.d.ts:2:32 - error TS1254: A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference.

2 const __VLS_globalComponents = { ...{} as import('vue').GlobalComponents };
                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

node_modules/vue/dist/__globaltypes_3.4_false.d.ts:2:57 - error TS2694: Namespace '"/Users/sheng/dev/vue-repro/node_modules/vue/dist/vue"' has no exported member 'GlobalComponents'.

2 const __VLS_globalComponents = { ...{} as import('vue').GlobalComponents };
                                                          ~~~~~~~~~~~~~~~~

node_modules/vue/dist/__globaltypes_3.4_false.d.ts:5:50 - error TS1254: A 'const' initializer in an ambient context must be a string or numeric literal or literal enum reference.

5 declare const __VLS_directiveBindingRestFields = { instance: null, oldValue: null, modifiers: null as any, dir: null as any };
                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Found 4 errors.

error Command failed with exit code 2.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Link to minimal reproduction

https://github.com/shengslogar/vuejs-language-tools-issue-4766

Any additional comments?

Since vue-cli configures projects to skipLibCheck: true by default (vuejs/vue-cli#5688), this is not a show-stopping bug, but still an unexpected one that only appears after upgrading from v2.0.29 to v2.1.0 and persists in v2.1.2.

[ramseyfeng]

Is this issue be fixed?

[shengslogar]

@ramseyfeng tagged v2.1.4