子路径导入

¥Subpath imports

除了 "exports" 字段之外，还有一个包 "imports" 字段用于创建仅适用于包本身的导入说明符的私有映射。

¥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消除歧义。

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

例如，可以使用导入字段来获得内部模块条件导出的好处：

¥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

其中 import '#dep' 没有得到外部包 dep-node-native 的解析（依次包括其导出），而是获取了相对于其他环境中的包的本地文件 ./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.

导入字段的解析规则与导出字段类似。

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