typescript 类型错误：无法在 getAssignmentTargetKind 读取未定义的属性“种类”
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TypeError: Cannot read property 'kind' of undefined at getAssignmentTargetKind
提问by rawk
This problem started to occur when updating my Angular 6 project to 7.x.
将我的 Angular 6 项目更新到 7.x 时开始出现此问题。
I opened an issue on the angular-cli github repo but they couldn't help.
我在 angular-cli github repo 上打开了一个问题，但他们无能为力。
So what I did is create a new project and add all components one by one to "hopefully" notice what caused the problem.
所以我所做的是创建一个新项目并一个一个添加所有组件，以“希望”注意到导致问题的原因。
Unfortunately I couldn't identify the problem. Here's the log:
不幸的是，我无法确定问题所在。这是日志：
ERROR in : TypeError: Cannot read property 'kind' of undefined
at getAssignmentTargetKind (E:\McClient\node_modules\typescript\lib\typescript.js:10049:28)
at Object.isAssignmentTarget (E:\McClient\node_modules\typescript\lib\typescript.js:10092:16)
at checkObjectLiteral (E:\McClient\node_modules\typescript\lib\typescript.js:46107:45)
at checkExpressionWorker (E:\McClient\node_modules\typescript\lib\typescript.js:50748:28)
at checkExpression (E:\McClient\node_modules\typescript\lib\typescript.js:50696:42)
at checkExpressionWithContextualType (E:\McClient\node_modules\typescript\lib\typescript.js:50524:26)
at checkApplicableSignature (E:\McClient\node_modules\typescript\lib\typescript.js:47963:35)
at chooseOverload (E:\McClient\node_modules\typescript\lib\typescript.js:48281:26)
at resolveCall (E:\McClient\node_modules\typescript\lib\typescript.js:48231:26)
at resolveCallExpression (E:\McClient\node_modules\typescript\lib\typescript.js:48534:20)
at resolveSignature (E:\McClient\node_modules\typescript\lib\typescript.js:48800:28)
at getResolvedSignature (E:\McClient\node_modules\typescript\lib\typescript.js:48844:26)
at checkCallExpression (E:\McClient\node_modules\typescript\lib\typescript.js:48936:29)
at checkExpressionWorker (E:\McClient\node_modules\typescript\lib\typescript.js:50759:28)
at checkExpression (E:\McClient\node_modules\typescript\lib\typescript.js:50696:42)
at resolveDecorator (E:\McClient\node_modules\typescript\lib\typescript.js:48741:28)
Here's a link to the github issue with logs from a checkSourcefile function I was supposed to log:
这是 github 问题的链接，其中包含我应该记录的 checkSourcefile 函数的日志：
https://github.com/angular/angular-cli/issues/13172
https://github.com/angular/angular-cli/issues/13172
How can I track down and (hopefully) fix what's causing this?
我如何追踪并（希望）解决导致此问题的原因？
Edit: My ng --version info
编辑：我的 ng --version 信息
Angular CLI: 7.1.3
Node: 8.11.4
OS: win32 x64
Angular: 7.1.3
... animations, cli, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.11.3
@angular-devkit/build-angular 0.11.3
@angular-devkit/build-optimizer 0.11.3
@angular-devkit/build-webpack 0.11.3
@angular-devkit/core 7.1.3
@angular-devkit/schematics 7.1.3
@angular/cdk 7.1.1
@ngtools/webpack 7.1.3
@schematics/angular 7.1.3
@schematics/update 0.11.3
rxjs 6.3.3
typescript 3.1.6
webpack 4.23.1
回答by David Njuguna
I simply re-run
我只是重新运行
ng serve
again and it worked!
又一次成功了！
回答by Franklin Pious
Run the application again usingng serveand it fixed the issue for me.
It happened when I pulled code from a branch to my existing running branch which was running via ng serve.
使用再次运行应用程序ng serve，它为我解决了问题。当我将代码从一个分支拉到我通过 ng serve 运行的现有运行分支时，发生了这种情况。
回答by Bert
I also had this problem. I solved it by updating my local @angular/cli to the same version as the @anguluar/cli version in my project .
我也有这个问题。我通过将我的本地 @angular/cli 更新为与我的项目中的 @anguluar/cli 版本相同的版本来解决它。
回答by Lastsword
I struggled with the same problem, did some digging and found 2 major solutions:
我遇到了同样的问题，做了一些挖掘并找到了两个主要的解决方案：
- Installing '@types/history' package.
- Downgrading typescript to 3.1.6(since the bug wasn't occurring then).
- 安装“@types/history”包。
- 将打字稿降级到 3.1.6（因为当时没有发生错误）。
See this GitHub issue here.
在此处查看此 GitHub 问题。
回答by Nanda Kishore Allu
- I was having issue with while migrating ionic application from V4 to V5.
- This is my error log image.
- 我在将离子应用程序从 V4 迁移到 V5 时遇到了问题。
- 这是我的错误日志图像。
- It was fixed with the below solution.
- 它已通过以下解决方案修复。
https://github.com/ckeditor/ckeditor4-angular/issues/78#issuecomment-565803253
https://github.com/ckeditor/ckeditor4-angular/issues/78#issuecomment-565803253
回答by Omkar Joshi
This Problem can be solved by restarting:
这个问题可以通过重启解决：
Use ng serve
使用ng 服务
回答by Mohamed Abo Elmagd
It solved from version
它从版本解决
npm i @angular-devkit/[email protected] -s
npm i @angular-devkit/[email protected] -s
check this https://www.npmjs.com/package/@angular-devkit/build-angular
检查这个https://www.npmjs.com/package/@angular-devkit/build-angular
回答by Luis Moreno
In my case the problem was that I had abstract classes with @Injectable, removing it solved the issue.
就我而言，问题是我有带有 @Injectable 的抽象类，删除它解决了这个问题。
Hopes it helps
希望有帮助
