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如何将Ionic3升级到Ionic4

[英]How to Upgrade Ionic3 to Ionic4

I have a couple of ionic 3 framework projects and templates, I wish to upgrade them to the current version of ionic which is now Ionic 4, 我有几个离子3框架项目和模板,我希望将它们升级到当前版本的离子,现在是Ionic 4,

I keep getting errors when I do npm install or run ionic serve 当我进行npm安装或运行离子服务时,我一直都会遇到错误

In my experience, the easiest path is to identify each breaking change step by step using, this document: https://github.com/ionic-team/ionic/blob/master/angular/BREAKING.md#breaking-changes 根据我的经验,最简单的方法是使用本文档逐步识别每个重大变化: https//github.com/ionic-team/ionic/blob/master/angular/BREAKING.md#breaking-changes

The migration linter is really handy as well: https://github.com/ionic-team/v4-migration-tslint 迁移linter也非常方便: https//github.com/ionic-team/v4-migration-tslint

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