尝试导入错误：“SomeObject”未从文件导出

Question

我已从 Webpack 3 升级到 Webpack 4。\n从那时起，我收到了很多有关未从某些文件导出的导入的警告。

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./packages/utils/logging/index.ts\nAttempted import error: \xe2\x80\x98Options\' is not exported from \'./loggers/log\'.\n @ ./packages/utils/index.ts\n @ ./src/App.tsx\n @ multi whatwg-fetch @babel/polyfill ./src/App.tsx\n

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我ts-loader与一起使用ForkTsCheckerWebpackPlugin使用。\n我已经检查了警告的导出，它们看起来不错。该代码确实有效，但是我仍然收到这些警告。

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tsconfig.json以供参考：

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{\n  "compilerOptions": {\n    "outDir": "build/dist",\n    "module": "esnext",\n    "target": "es5",\n    "lib": ["es6", "dom"],\n    "baseUrl": ".",\n    "sourceMap": true,\n    "allowJs": true,\n    "jsx": "react",\n    "moduleResolution": "node",\n    "forceConsistentCasingInFileNames": true,\n    "noImplicitReturns": true,\n    "noImplicitThis": true,\n    "strictNullChecks": true,\n    "suppressImplicitAnyIndexErrors": true,\n    "noUnusedLocals": false,\n    "noUnusedParameters": false,\n    "allowSyntheticDefaultImports": true,\n    "skipLibCheck": true,\n    "resolveJsonModule": true\n  },\n  "include": ["packages/**/*"],\n  "exclude": [\n    "node_modules",\n    "build",\n    "scripts",\n    "webpack",\n    "**/__tests__/*"\n  ]\n}\n\n

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网页包配置：

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...\nmodule: {\n    rules: [\n      {\n        test: /\\.(ts|tsx|d.ts)$/,\n        exclude: /node_modules/,\n        use: {\n          loader: \'ts-loader\',\n          options: {\n            transpileOnly: true,\n          },\n        },\n      },\n      {\n        test: /\\.(js|jsx|mjs)$/,\n        include: [paths.packagesSrc, ...paths.modulesToTranspile],\n        exclude: /node_modules/,\n        use: {\n          loader: \'babel-loader?cacheDirectory=true\',\n          options: {\n            configFile: paths.configFiles.babel,\n          },\n        },\n      },\n      ...\n    ]\n},\nplugins: [\n    ...\n    new ForkTsCheckerWebpackPlugin({\n      async: options.asyncTypeChecking,\n      checkSyntacticErrors: true,\n      tsconfig: paths.appTsConfig,\n      watch: paths.packagesSrc,\n    }),\n    ...\n],\n...\n

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Answer 1

ts-loader在 Typescript 中重新导出类型时，Webpack 4 中似乎存在问题。
可以忽略这些警告。

参考