子路径导入

🌐 Subpath imports

除了"exports"字段外，还有一个包“导入”字段 创建仅适用于从 封装本身。

🌐 In addition to the "exports" field, there is a package "imports" field to create private mappings that only apply to import specifiers from within the package itself.

"imports" 字段中的条目必须始终以 # 开头，以确保它们与外部包说明符区分开来。

🌐 Entries in the "imports" field must always start with # to ensure they are disambiguated from external package specifiers.

例如，imports 字段可以用于为内部模块获得条件导出的好处：

🌐 For example, the imports field can be used to gain the benefits of conditional exports for internal modules:

// package.json
{
  "imports": {
    "#dep": {
      "node": "dep-node-native",
      "default": "./dep-polyfill.js"
    }
  },
  "dependencies": {
    "dep-node-native": "^1.0.0"
  }
} 拷贝

当 import '#dep' 无法解析外部包 dep-node-native（包括其导出内容）时，它会在其他环境中获取相对于该包的本地文件 ./dep-polyfill.js。

🌐 where import '#dep' does not get the resolution of the external package dep-node-native (including its exports in turn), and instead gets the local file ./dep-polyfill.js relative to the package in other environments.

与 "exports" 字段不同，"imports" 字段允许映射到外部包。

🌐 Unlike the "exports" field, the "imports" field permits mapping to external packages.

imports 字段的解析规则在其他方面与 exports 字段类似。

🌐 The resolution rules for the imports field are otherwise analogous to the exports field.