blocks|key|2560038|text|您可能已经为Visual安装了一个旧版本的TypeScript，并且Visual安装正在隐藏通过npm安装的版本。您可能需要更改PATH变量。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2560039|若要检查，请打开命令提示符(CMD.exe)并键入|2560040|where+tsc|code-block|syntax|javascript|2560041|如果第一个项目与Node/npm没有关联，而是安装在类似C:\Program+Files+(x86)\Microsoft+SDKs\TypeScript\...的东西中，那么您需要配置您的系统环境变量。|2560042|打开开始菜单。|ordered-list-item|2560043|搜索system+environment+variables|2560044|打开标题为Edit+the+system+environment+variables的项目|2560045|确保PATH环境变量的Node/npm位置优先于Visual位置。|2560046|还要确保任何较新的Visual安装位置都优先于旧的安装位置。|2560047|2560048|​|2560049|也请看这个答案。|2560050|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Microsoft/TypeScript/issues/4971#issuecomment-143359603^0|1S|4|0|E|7|0|0|S|1G|0|0|2|S|0|5|11|0|2|4|1|1|0|0|0|7|0|0^^$0|@$1|2|3|4|5|6|7|1C|8|@$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1F|8|@$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1I|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1J|8|@$9|1K|A|1L|B|C]]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1M|8|@]|D|@]|E|$]]|$1|R|3|S|5|Q|7|1N|8|@$9|1O|A|1P|B|C]]|D|@]|E|$]]|$1|T|3|U|5|Q|7|1Q|8|@$9|1R|A|1S|B|C]]|D|@]|E|$]]|$1|V|3|W|5|Q|7|1T|8|@$9|1U|A|1V|B|C]]|D|@]|E|$]]|$1|X|3|Y|5|Q|7|1W|8|@]|D|@]|E|$]]|$1|Z|3|-4|5|6|7|1X|8|@]|D|@]|E|$]]|$1|10|3|11|5|6|7|1Y|8|@]|D|@]|E|$]]|$1|12|3|13|5|6|7|1Z|8|@]|D|@$9|20|A|21|1|22]]|E|$]]|$1|14|3|-4|5|6|7|23|8|@]|D|@]|E|$]]]|15|$16|$5|17|18|19|E|$1A|1B]]]]

It's likely that you have an old version of TypeScript installed for Visual Studio, and that the Visual Studio installation is shadowing the one installed through npm. You will probably need to change your <code>PATH</code> variable.

To check, open up a Command Prompt (<code>CMD.exe</code>) and type in

<pre><code>where tsc
</code></pre>

If the first items are not associated with Node/npm, and are instead installed in something like <code>C:\Program Files (x86)\Microsoft SDKs\TypeScript\...</code>, then you'll need to configure your system environment variables.

<ol>
<li>Open up your start menu.</li>
<li>Search for <code>system environment variables</code></li>
<li>Open the item titled <code>Edit the system environment variables</code></li>
<li>Ensure that the <code>PATH</code> environment variable has the Node/npm location prioritized over the Visual Studio location.

<ol>
<li>Also ensure that any newer Visual Studio installation locations are prioritized over older ones.</li>
</ol></li>
</ol>

<a href="https://github.com/Microsoft/TypeScript/issues/4971#issuecomment-143359603" rel="noreferrer">Also see this answer</a>.

blocks|key|2560025|text|我相信你需要|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2560026|npm+install+-g+typescript@latest|code-block|syntax|javascript|2560027|或|2560028|npm+update+-g+typescript|2560029|答：在这里输入链接描述|offset|length|2560030|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/39677450/1594014^0|0|0|0|0|2|9|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

I believe you need to do

<pre><code>npm install -g typescript@latest
</code></pre>

or

<pre><code>npm update -g typescript
</code></pre>

As answered <a href="https://stackoverflow.com/a/39677450/1594014" title="here">enter link description here</a>

blocks|key|2597002|text|在windows上，打开命令提示符并键入:+where+tsc|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2597003|这将为您提供路径和全局设置所指向的类型文本版本的列表。|2597004|转到路径:+C:\xxxxx\Microsoft+\TypeScript|2597005|然后删除旧版本文件夹(最新版本除外)。然后再次检查您的当前版本。|2597006|祝你今天愉快!|2597007|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

On windows, Open the command prompt and type: where tsc

This will give you a list of typescript versions your PATH and global settings are pointing to.

Go to the path: C:\xxxxx\Microsoft SDKs\TypeScript

Then delete the older version folder except latest one. Then check your current version again.

Have a good day!

blocks|key|2597129|text|从TypeScript文件夹中删除C:\Program+Files+(x86)\Microsoft+SDKs文件夹。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2597130|entityMap^0|1|A|H|11|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

Remove the <code>TypeScript</code> folder from <code>C:\Program Files (x86)\Microsoft SDKs</code>.

blocks|key|2597136|text|如果您正在使用IntelliJ+IDE，请尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2597137|首选项>语言和框架>类型记录|2597138|并将类型记录选择字段更改为正确的路径。|2597139|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

If you are using IntelliJ IDE try:
Preferences &gt; Language &amp; Frameworks &gt;Typescript
and change Typescript select field to the correct path.

blocks|key|2597103|text|旧的类型记录版本必须位于windows计算机C:\Program+(x86)\Microsoft+\+typescript上的地址上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2597104|所以，您所要做的就是进入c:\驱动器，然后进入程序文件(x86)文件夹，然后找到Microsoft文件夹，您将看到类型记录文件夹，您可以从那里剪切或删除该文件夹，然后返回cmd并为类型记录编写路径，它将显示新路径和最新版本。|2597105|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

the old typescript version must be on that address on windows computer,
C:\Program Files (x86)\Microsoft SDKs\TypeScript

so all you have to do is to go to that address by going into c:\ drive and then into program files (x86) folder and then find Microsoft SDKs folder and you will see the typescript folder,you can just cut or delete the folder from there and then come back to cmd and write the path for typescript and it will show you the new path and the latest version.

Typescript is updated using the following command:

<pre><code>npm install typescript -g
</code></pre>

And latest version 2.4.2 is installed correctly and I can verify it by looking the path shown by folloing command:

<pre><code>npm list typescript -g
</code></pre>

but the following command shown older version (1.0.3.0) :

<pre><code>tsc -v
</code></pre>

Also looked in TEMP variable and it points to the same path as it showed by <code>npm list</code>. 

Also running <code>where tsc</code> in command prompt doesn't show anything and doesn't come up with any error.

npm doesn't update tsc version

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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命令行工具

使用以下命令更新类型记录：npm install typescript -g最新版本2.4.2已正确安装，我可以通过查看由folloing命令显示的路径来验证它：npm list typescript -g但是下面的命令显示了旧版本(1.0.3.0)：tsc -v还查看了TEMP变量，它指向与npm list显示的路径相同的路径。此外，在命令提示符中运行where tsc不会显示任何内容，也不会产

问npm不更新tsc版本
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