将Angular 6更新至7 - 依赖警告和typescript错误

Question

将Angular 6更新至7 - 依赖警告和typescript错误

angulartypescriptnpmangular7angular-upgrade

3

我使用了这个链接来将我的简单Angular前端升级到Angular 7：

在更新过程中，我收到了几个有关package.json和polyfills.ts文件的警告：

UPDATE package.json (1313 bytes)
npm WARN @ngtools/webpack@6.1.5 requires a peer of typescript@~2.4.0 || ~2.5.0 || ~2.6.0 || ~2.7.0 || ~2.8.0 || ~2.9.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/compiler@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/core@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/platform-browser-dynamic@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/platform-browser@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/common@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

added 69 packages, removed 4 packages, updated 16 packages and moved 2 packages in 43.395s
UPDATE package.json (1315 bytes)
UPDATE src/polyfills.ts (3165 bytes)
npm WARN codelyzer@4.2.1 requires a peer of @angular/compiler@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/core@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/platform-browser-dynamic@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/platform-browser@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN codelyzer@4.2.1 requires a peer of @angular/common@>=2.3.1 <7.0.0 || >6.0.0-beta <7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

我还遇到了 TypeScript (3.0.1) 的这个错误：

Error:Initialization error (angular 2 language service). Cannot read property 'CommandTypes' of undefined

有没有人能提供一种解决这些依赖警告和typescript错误的方法？我需要手动更改依赖吗？如果是，我需要一个示例说明如何...

- student18

Angular实际上有一个官方的更新工具，你应该使用它。它使得更新过程非常简单和容易。请尝试使用Angular Update。 - SiddAjmera

请告诉我您经历了哪些步骤，否则很难知道。您是否执行了 ng update 命令？您的 packages.json 文件是什么样子的？ - Qortex

我从我的链接执行了以下ng命令: ng update @angular/cli @angular/core - student18

2个回答

0

你删除了旧的node_modules文件夹吗？如果没有，请删除它，如果有package-lock.json文件也一并删除。清理npm缓存npm cache clean -f然后尝试安装所有的包。

- Anjum....

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Qortex · Accepted Answer

问题在于您没有这两个软件包的最新版本。

1. 您需要将软件包Codelyzer更新到最新版本。`ng update --all`应该可以完成此操作，否则您也可以手动编辑您的`package.json`文件。

您可以在此处看到，此软件包的最新版本（4.5.0）已与Angular 7兼容，因此您需要使用它而不是您的4.2.1版本。

2. 对于您的@ngtools/webpack，您需要使用最新版本（请参见此处，它是7.0.2）。您可能没有在packages.json中明确指定此软件包，因此在运行ng update之前，您可能只需要执行`npm cache clean -f`。

如果仍然无法解决问题，建议您删除您的node_modules目录，这将强制npm install从存储库中的最新版本重新构建所有内容，假设您正确地更新了您的package.json（手动或通过ng update）。