什么是 tsconfig.json

概述

目录中存在 tsconfig.json 文件表明该目录是 TypeScript 项目的根目录。tsconfig.json 文件指定编译项目所需的根文件和编译器选项。

JavaScript 项目可以改用 jsconfig.json 文件,它的作用几乎相同,但默认启用了一些与 JavaScript 相关的编译器标志。

项目通过以下方式之一编译:

使用 tsconfig.json 或 jsconfig.json

  • 通过在没有输入文件的情况下调用 tsc,在这种情况下,编译器会从当前目录开始搜索 tsconfig.json 文件,并继续沿父目录链向上。
  • 通过在没有输入文件和 --project(或只是 -p)命令行选项的情况下调用 tsc,该选项指定包含 tsconfig.json 文件的目录的路径,或包含配置的有效 .json 文件的路径。

在命令行上指定输入文件时,tsconfig.json 文件将被忽略。

示例

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TSConfig 基础

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{
  "extends": "@tsconfig/node12/tsconfig.json",

  "compilerOptions": {
    "preserveConstEnums": true
  },

  "include": ["src/**/*"],
  "exclude": ["node_modules", "**/*.spec.ts"]
}

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详情

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TSConfig 参考手册

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Schema

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