What the difference between writing typescript configuration in package.json with vue-tsc or in tsconfig.json?

Question

I'm working on a project using typescript & vue3 & vite. It's a common component library, so when I build this project, I have to generate .d.ts declaration files. I have tried in two ways:

1. Configing emitDeclarationOnly: true in tsconfig.json, but I got error Option 'emitDeclarationOnly' cannot be specified with option 'noEmit'. However, in my project, I didn't config noEmit option. So I think the noEmit option is from node_modules. This is my tsconfig.json file:

{
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "strict": true,
    "jsx": "preserve",
    "importHelpers": true,
    "moduleResolution": "node",
    "experimentalDecorators": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "sourceMap": true,
    "noImplicitThis": true,
    "baseUrl": ".",
    "allowJs": true,
    "declaration": true,
    "emitDeclarationOnly": true,
    "lib": [
      "esnext",
      "dom",
      "dom.iterable",
      "scripthost"
    ],
    "paths":{
      "@": ["src"],
      "@/*": ["src/*"],
    },
    "types": ["node"],
  },
  "include": [      // 编译哪些文件
    // "src/**/.d.ts",
    "src/**/*.ts",
    "src/**/*.tsx",
    "src/**/*.vue",
    "tests/**/*.ts",
    "tests/**/*.tsx",
    ".eslintrc.cjs",
  ],
  "exclude": [
    "node_modules",
    "vite.config.ts",
  ],
   "references": [{ "path": "./tsconfig.node.json" }]
}

2. Configing --emitDeclarationOnly in package.json like below works fine for me:

"build": "vite build && vue-tsc --emitDeclarationOnly",

So I'm wondering what exactly the difference between configuration in tsconfig.json or in package.json? Thanks in advance.