选项'noEmit'不能与选项'incremental'一起指定 [英] Option 'noEmit' cannot be specified with option 'incremental'

问题描述

我正在开发next.js应用程序.它具有以下tsconfig.js

I am developing a next.js app. It has the following tsconfig.js

{
  "compilerOptions": {
    "target": "ES2018",
    "module": "esnext",
    "lib": [
      "dom",
      "es2018",
      "es2019.array"
    ],
    "jsx": "preserve",
    "sourceMap": true,
    "skipLibCheck": true,
    "strict": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "allowJs": true,
    "forceConsistentCasingInFileNames": true,
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "incremental": true
  },
  "exclude": [
    "server",
    "next.config.js"
  ],
  "include": [
    "lib/global.d.ts",
    "next-env.d.ts",
    "**/*.ts",
    "**/*.tsx",
    "**/*.js"
  ]
}

它在开发模式下运行良好，但是在创建版本时却显示以下错误:

It is running well in the development mode but while creating build it shows following error:

ERROR in tsconfig.json
22:5 Option 'noEmit' cannot be specified with option 'incremental'.
    20 |     "resolveJsonModule": true,
    21 |     "isolatedModules": true,
  > 22 |     "noEmit": true,
       |     ^
    23 |     "incremental": true
    24 |   },
    25 |   "exclude": [

Next.js 自动在tsconfig.json文件中注入'noEmit:true'.虽然我确实需要增量模式才能更快地构建.有什么解决方案?

Next.js automatically injects 'noEmit: true' in tsconfig.json file. While i really need the incremental mode for faster builds. What can be the solution to this?

推荐答案

来自 TypeScript问题#33809 :

将incremental和noEmit放在一起确实没有任何意义，因为noEmit阻止我们编写增量元数据. (因此，实际上没有什么是增量的.)

It really doesn't make sense to have incremental and noEmit together, since noEmit prevents us from writing incremental metadata. (So nothing is actually incremental).

如果您实际上只想进行增量检查，则应考虑使用emitDeclarationOnly而不是noEmit.

You should consider emitDeclarationOnly instead of noEmit, if you actually just want incremental checking.

因此，在定义noEmit: true时，incremental: true标志没有做任何事情来加快构建速度.因此，您应该删除noEmit: true或将其更改为emitDeclarationOnly: true.

According to this, the incremental: true flag has done nothing to speed up the build while noEmit: true is defined. So you should either remove noEmit: true or change it to emitDeclarationOnly: true.

您可以使用outDir和declarationDir控制输出文件夹.

You can control the output folders using outDir and declarationDir.

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