目标必须是相对 URL

\Targets must be relative URLs

"exports" 映射中的所有目标路径(与导出键关联的值)必须是以 ./ 开头的相对 URL 字符串。

\All target paths in the "exports" map (the values associated with export keys) must be relative URL strings starting with ./.

// package.json
{
 "name": "my-package",
 "exports": {
 ".": "./dist/main.js", // Correct
 "./feature": "./lib/feature.js", // Correct
 // "./origin-relative": "/dist/main.js", // Incorrect: Must start with ./
 // "./absolute": "file:///dev/null", // Incorrect: Must start with ./
 // "./outside": "../common/util.js" // Incorrect: Must start with ./
 }
} 拷贝

此行为的原因包括:

\Reasons for this behavior include:

• 安全性:防止从包自身目录之外导出任意文件。

  \Security: Prevents exporting arbitrary files from outside the package's own directory.

• 封装:确保所有导出的路径都相对于包根目录进行解析,从而使包自包含。

  \Encapsulation: Ensures all exported paths are resolved relative to the package root, making the package self-contained.