5

I have a React / Mobex application written in TypeScript, built by Webpack 1. After updating TypeScript version from 2.3.4 to 2.4.2 i get an error

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

I also tried Typescript 2.7.2, same error. I've tried explicitly providing the path to its typings in "paths", tried installing the latest version of 'reflect-metadata', including globally - still same error.

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",
    //...
  },
4

2 回答 2

4

尝试reflect-metadata从types部分中删除。你可以像往常一样导入它：

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

Reflect.defineMetadata(...)
于 2018-03-23T06:00:48.720 回答
0

仅供参考，在需要反射元数据而不导入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反射元数据包中，也解决了这个问题。

于 2021-08-25T18:52:00.037 回答