Angular项目无法安装TypeScript@4.9的问题咨询

我希望使用TypeScript的satisfies运算符，但尝试安装typescript@4.9时出现以下npm错误：

npm WARN ERESOLVE overriding peer dependency
npm WARN While resolving: back-office@0.0.0
npm WARN Found: typescript@4.8.4
npm WARN node_modules/typescript
npm WARN   peer typescript@"~4.8.2" from @angular-devkit/build-angular@15.0.1
npm WARN   node_modules/@angular-devkit/build-angular
npm WARN     dev @angular-devkit/build-angular@"^15.0.1" from the root project
npm WARN   3 more (@ngtools/webpack, @angular/compiler-cli, the root project)
npm WARN
npm WARN Could not resolve dependency:
npm WARN peer typescript@"~4.8.2" from @angular-devkit/build-angular@15.0.1
npm WARN node_modules/@angular-devkit/build-angular
npm WARN   dev @angular-devkit/build-angular@"^15.0.1" from the root project
npm WARN ERESOLVE overriding peer dependency
npm WARN While resolving: back-office@0.0.0
npm WARN Found: typescript@4.8.4
npm WARN node_modules/typescript
npm WARN   peer typescript@"~4.8.2" from @angular-devkit/build-angular@15.0.1
npm WARN   node_modules/@angular-devkit/build-angular
npm WARN     dev @angular-devkit/build-angular@"^15.0.1" from the root project
npm WARN   3 more (@ngtools/webpack, @angular/compiler-cli, the root project)
npm WARN
npm WARN Could not resolve dependency:
npm WARN peer typescript@">=4.8.2 <4.9" from @angular/compiler-cli@15.0.1
npm WARN node_modules/@angular/compiler-cli
npm WARN   peer @angular/compiler-cli@"^15.0.0" from @angular-devkit/build-angular@15.0.1
npm WARN   node_modules/@angular-devkit/build-angular
npm WARN   2 more (@ngtools/webpack, the root project)
npm WARN ERESOLVE overriding peer dependency
npm WARN While resolving: back-office@0.0.0
npm WARN Found: typescript@4.8.4
npm WARN node_modules/typescript
npm WARN   peer typescript@"~4.8.2" from @angular-devkit/build-angular@15.0.1
npm WARN   node_modules/@angular-devkit/build-angular
npm WARN     dev @angular-devkit/build-angular@"^15.0.1" from the root project
npm WARN   3 more (@ngtools/webpack, @angular/compiler-cli, the root project)
npm WARN
npm WARN Could not resolve dependency:
npm WARN peer typescript@">=4.8.2 <4.9" from @angular/compiler-cli@15.0.1
npm WARN node_modules/@angular/compiler-cli
npm WARN   peer @angular/compiler-cli@"^15.0.0" from @angular-devkit/build-angular@15.0.1
npm WARN   node_modules/@angular-devkit/build-angular
npm WARN   2 more (@ngtools/webpack, the root project)

问题解答 #

1. Angular是否支持TypeScript@4.9？
   当前你使用的Angular 15.0.1版本不支持TypeScript 4.9。从错误信息可以看到：

• @angular-devkit/build-angular@15.0.1要求TypeScript版本为~4.8.2（仅兼容4.8.x系列）
• @angular/compiler-cli@15.0.1的依赖范围是>=4.8.2 <4.9，直接排除了4.9及以上版本

2. 这是本地问题吗？
   不是本地问题，这是Angular官方对对应版本的TypeScript兼容性做了明确约束，npm只是在执行依赖解析时，检测到你要安装的TS版本超出了允许范围，因此抛出警告。

3. 如果不支持，在哪里可以咨询其支持时间？
   你可以通过以下方式获取Angular对TypeScript新版本的支持信息：

• 查看Angular官方的版本兼容性说明文档，每个Angular版本都会明确标注兼容的TypeScript版本范围
• 关注Angular的更新日志或GitHub仓库的Release Notes，新版本发布时会同步说明TypeScript兼容性的变化
• 待Angular后续版本更新后，检查对应的peer依赖要求，确认是否已支持TypeScript 4.9

内容的提问来源于stack exchange，提问作者ertucode