如何测试针对本地js库编译typescript声明文件

Question

我在HunterLarco/Twitter-V2中添加了类型脚本定义，它具有以下结构：

package.json
src/
  twitter.js
  twitter.d.ts
  Credentials.js
  Credentials.d.ts

我想测试.js文件是否与.d.ts声明文件匹配。

现在我正在使用这个tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "alwaysStrict": true,
    "baseUrl": ".",
    "forceConsistentCasingInFileNames": true,
    "lib": ["es2018"],
    "module": "commonjs",
    "moduleResolution": "node",
    "noFallthroughCasesInSwitch": true,
    "paths": { "twitter-v2": ["src"] },
    "typeRoots": [
      "./node_modules/@types",
      "./src"
    ],
    "outDir": "dist",
    "strict": true,
    "target": "es2018"
  },

  "include": [
    "src/**/*",
    "tests/**/*"
  ]
}

但是，当我故意向twitter.d.ts添加不正确的类型信息并运行tsc--project tsconfig.json时，它不会报告任何错误并写入dist/。

Answer 1

我需要启用编译器选项来检查js文件（默认情况下typescript不做，即使使用js也是允许的）

https://www.typescriptlang.org/tsconfig#checkjs

{
  "extends": "@tsconfig/node10/tsconfig.json",

  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "alwaysStrict": true,
    "checkJs": true,
    "forceConsistentCasingInFileNames": true,
    "moduleResolution": "node",
    "noEmit": true,
    "noFallthroughCasesInSwitch": true
  },

  "include": ["src/**/*", "tests/**/*"]
}