示例：导入地图 模拟

【Example: import maps emulation】

给定导入映射：

【Given an import map:】

{
  "imports": {
    "react": "./app/node_modules/react/index.js"
  },
  "scopes": {
    "./ssr/": {
      "react": "./app/node_modules/server-side-react/index.js"
    }
  }
} 拷贝

{
  "dependencies": true,
  "scopes": {
    "": {
      "cascade": true,
      "dependencies": {
        "react": "./app/node_modules/react/index.js"
      }
    },
    "./ssr/": {
      "cascade": true,
      "dependencies": {
        "react": "./app/node_modules/server-side-react/index.js"
      }
    }
  }
} 拷贝

导入映射假定你可以默认获取任何资源。这意味着策略顶层的 "dependencies" 应设置为 true。策略要求这是需要选择加入的，因为它会启用应用所有资源的跨链接，而对于许多场景来说这没有意义。它们还假定任何给定的作用域可以访问其允许依赖之上的任何作用域；所有模拟导入映射的作用域必须设置 "cascade": true。

【Import maps assume you can get any resource by default. This means "dependencies" at the top level of the policy should be set to true. Policies require this to be opt-in since it enables all resources of the application cross linkage which doesn't make sense for many scenarios. They also assume any given scope has access to any scope above its allowed dependencies; all scopes emulating import maps must set "cascade": true.】

导入映射只有一个顶层作用域用于它们的“imports”。所以要模拟“imports”，请使用“”作用域。要模拟“scopes”，可以以类似于导入映射中“scopes”的方式使用“scopes”。

【Import maps only have a single top level scope for their "imports". So for emulating "imports" use the "" scope. For emulating "scopes" use the "scopes" in a similar manner to how "scopes" works in import maps.】

注意事项：策略不会对范围的各种查找使用字符串匹配。它们会进行 URL 遍历。这意味着像 blob: 和 data: 这样的 URL 在两个系统之间可能无法完全互操作。例如，导入映射可以通过在 / 字符处分割 URL 来部分匹配 data: 或 blob: URL，而策略则故意不能这样做。对于 blob: URL，导入映射范围不会采用 blob: URL 的源。

【Caveats: Policies do not use string matching for various finding of scope. They do URL traversals. This means things like blob: and data: URLs might not be entirely interoperable between the two systems. For example import maps can partially match a data: or blob: URL by partitioning the URL on a / character, policies intentionally cannot. For blob: URLs import map scopes do not adopt the origin of the blob: URL.】

此外，导入地图只在“导入”状态下工作，因此可能需要添加一个 所有依赖映射的“导入”条件。

【Additionally, import maps only work on import so it may be desirable to add a "import" condition to all dependency mappings.】