Question

我正在创建一个 dart http 库库用于 flutter 应用程序。我从 < a href=" https://pub. dev/packages/http# configiforation" rel= "nofollown noreferrer" > >here 中学习到, 每个不同的平台都需要不同的 http 客户端执行, 如 cronet_http/code >, cupertino_http < /code>, , fetch_client 。所以我必须在软件包 s pubspec.yaml 中包括所有可能的依附关系, 并使用有条件的导入。


问题是,如果我只想在某个平台上发布我的应用程序,不管是它还是机器人。 iOS和网络的依赖性会被纳入他的应用程序吗? 如果是的话,应用程序的大小将会不必要地大于要求。
编辑 :
It s hard to check whether the unnecessary dependencies included
or not, because for cronet_http or cupertino_http, i think it s only about several bytes in size. So instead, i am trying to derive the conclusion that, if cupertino_http is not used in the finally released Android app, but it s included, it will be certainly increase the size of the app by some extent. Do i have to really make an app for this library and check whether it s several bytes larger than expected, so that i am qualified to ask my question?
我想象到,可以采取如下一种办法,排除不必要依赖性:

specify cronet_http and cupertino_http as optional dependencies, like there is android_dependencies, or ios_dependencies, besides dependencies in pubspec.yaml.
And let the library users select which dependency to include in his/her release, with the dependencies.

或者在 dev_dependies  中保留可选择的依存关系,并可选择检测和导入包含的依存关系,然后让用户在 dependies 中选择哪个。
很高兴知道有一个treshashking  algo在摇摆中去掉这些不必要的依赖代码。但我很难从谷歌找到一些关于它的文件。只有几个博客讨论它,只是更混乱一些,比如 这个问题 说。

Answer 1

Normally Darts linker is pretty good to remove all that isn t needed using its treeshaking algorithm. Especially plugins will always only include the platform-specific code that is used for that platform in your final app. In general, unless you find a problem with size or performance don t try to optimize without need.

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