问题
Currently I have TypeScript 1.0.3.0 version installed on my machine.
I want to update it to latest one i.e. 2.0.
How to do this with npm?
回答1:
Try npm install -g typescript@latest. You can also use npm update instead of install, without the latest modifier.
回答2:
Open command prompt (cmd.exe/git bash)
Recommended:
npm install -g typescript@latest
This will install the latest typescript version if not already installed, otherwise it will update the current installation to the latest version.
And then verify which version is installed:
tsc -v
If you have typescript already installed you could also use the following command to update to latest version, but as commentators have reported and I confirm it that the following command does not update to latest (as of now)!
npm update -g typescript@latest
回答3:
If you are on Windows and have Visual Studio installed you might have something in your PATH that is pointing to an old version of TypeScript. I found that removing the folder "C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.0\" from my PATH (or deleting/renaming this folder) will allow the more recent npm globally installed TypeScript version of tsc to work.
回答4:
You should be able to do this by simply typing npm install -g typescript@2.0. If this does not work, I am beginning to wonder what version of node and npm you are on. Try node -v and npm -v to find these out. You should be on node >4.5 and npm >3
回答5:
Just use the command # npm update -g typescript
For update all global installed module, Use this command# npm update -g
回答6:
For npm: you can run:
npm update -g typescript
By default, it will install latest version.
For yarn, you can run:
yarn upgrade typescript
Or you can remove the orginal version, run yarn global remove typescript, and then execute yarn global add typescript, by default it will also install the latest version of typescript.
more details, you can read yarn docs.
回答7:
If you are using Windows with very old NodeJS, then uninstall previous NodeJs and NVM (Node Version Manager) in Control Panel (Win7) or Settings/Apps (Win10) if exists. Make sure that they are removed from the PATH.
Reinstall NodeJS: https://nodejs.org/en/download It will install NPM as well.
Install TypeScript globally:
npm install -g typescript
Verify installation:
tsc -v
回答8:
Use command 'where' in prompt to find current executable in path
C:\> where tsc
C:\Users\user\AppData\Roaming\npm\tsc
C:\Users\user\AppData\Roaming\npm\tsc.cmd
来源：https://stackoverflow.com/questions/39677437/how-to-update-typescript-to-latest-version-with-npm