打字稿更新 2.3.4 => 2.4.2 后出现编译错误 "Cannot find type definition file for 'reflect-metadata'."

Question

我有一个用 TypeScript 编写的 React / Mobex 应用程序，由 Webpack 1 构建。将 TypeScript 版本从 2.3.4 更新到 2.4.2 后，我收到一个错误

ERROR in C:\myproject\tsconfig.json
error TS2688: Cannot find type definition file for 'reflect-metadata'.

我也试过Typescript 2.7.2，同样的错误。我已经尝试在 "paths" 中明确提供其类型的路径，尝试安装最新版本的 'reflect-metadata'，包括全局 - 仍然是相同的错误。

tsconfig.json

{
    "compilerOptions": {
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "jsx": "react",
        "lib": ["dom", "es2015.promise", "es6"],
        "module": "commonjs",
        "moduleResolution": "node",
        "noImplicitAny": true,
        //"noUnusedLocals": true,
        "noUnusedParameters": true,
        "outDir": "./dist/",
        "sourceMap": true,
        "suppressImplicitAnyIndexErrors": true,
        "target": "es5",
        "types": ["reflect-metadata"],
        "baseUrl": ".",
        "paths": {
            "react-split-pane": ["./type_fixes/react-split-pane/index.d.ts"],
            "react-dropzone": ["./type_fixes/react-dropzone/index.d.ts"],
            "react-bootstrap-toggle": ["./type_fixes/react-bootstrap-toggle/index.d.ts"]
        }
    },
    "include": [
        "./src/**/*",
        "./index.tsx",
        "./declarations.d.ts"
    ],
    "exclude": [
        "node_modules"
    ]
}

package.json

"dependencies": {
                //...
    "reflect-metadata": "0.1.10",
                //...
},
  "devDependencies": {
     //...
    "typescript": "2.4.2",
    //...
  },

Answer 1

尝试从 types 部分删除 reflect-metadata。您可以像往常一样导入它：

import 'reflect-metadata'; // Just import to make visible Reflect

Reflect.defineMetadata(...)

Answer 2

仅供参考，在不导入 reflect-metadata 时尝试解决相同的错误消息:)

npm i --save-dev @types/reflect-metadata

即使安装消息说类型包含在 reflect-metadata 包中，也已解决。

打字稿更新 2.3.4 => 2.4.2 后出现编译错误 "Cannot find type definition file for 'reflect-metadata'."

After typescript update 2.3.4 => 2.4.2 i get compilation error "Cannot find type definition file for 'reflect-metadata'."

typescript

reflect-metadata

typescript-typings