Mobx react无法很好地处理webpack和typescript-“observer”未导出成员错误

在.tsx文件中,我像这样导入observer:

import { observer } from "mobx-react"

ERROR in ./src/components/AppHeader/AppHeader.tsx
[tsl] ERROR in (...)AppHeader/AppHeader.tsx(2,10)
      TS2305: Module '"mobx-react"' has no exported member 'observer'.

Mobx-react 显然有 observer 并出口。 ts-loader 管理 ts 和 tsx 网页包中的文件,这是我的 tsconfig.json .

{
  "compilerOptions": {
    "moduleResolution": "node",
    "module": "esnext",
    "target": "es5",
    "jsx": "react",    
    "baseUrl": "./react/src",
    "lib": ["es2017", "dom"],
    "sourceMap": true,
    "allowJs": true,
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "importHelpers": true,
    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "allowSyntheticDefaultImports": true,
    "resolveJsonModule": true
  },
  "exclude": [
    "node_modules",
    "build",
    "scripts",
    "acceptance-tests",
    "webpack",
    "jest",
    "src/setupTests.ts"
  ]
}

项目已启动 react-create-app