从 Ionic 4 更新到 5

¥Updating from Ionic 4 to 5

将应用从 Ionic 4 迁移到 5 需要对 API 属性、CSS 实用程序和已安装的包依赖进行一些更新。

¥Migrating an app from Ionic 4 to 5 requires a few updates to the API properties, CSS utilities, and the installed package dependencies.

注意

本指南假设你已将应用更新到最新版本的 Ionic 4。在开始本指南之前，请确保你已遵循 更新到 Ionic 4 指南。

¥This guide assumes that you have already updated your app to the latest version of Ionic 4. Make sure you have followed the Updating to Ionic 4 Guide before starting this guide.

重大变化

有关从 Ionic 4 到 Ionic 5 的重大更改的完整列表，请参阅 Ionic 框架存储库中的 重大变更文档。

¥For a complete list of breaking changes from Ionic 4 to Ionic 5, please refer to the breaking changes document in the Ionic Framework repository.

包和依赖

¥Packages and Dependencies

对于基于 Angular 的项目，你只需运行：

¥For Angular based projects, you can simply run:

npm install @ionic/angular@v5-lts @ionic/angular-toolkit@4.0.0 --save

对于 React 项目，你可以运行：

¥For React projects, you can run:

npm install @ionic/react@v5-lts @ionic/react-router@v5-lts ionicons@5.5.3

对于 Stencil / vanilla JS 项目，你可以运行：

¥For Stencil / vanilla JS projects, you can run:

npm i @ionic/core@v5-lts --save

如果你想要一个新的项目启动器，可以从 CLI 创建新的项目库，并可以手动迁移现有应用。

¥If you would like a fresh project starter, a new project base can be created from the CLI and an existing app can be migrated over manually.