npm安装错误的软件包版本

Question

I'm trying to install karma using the following command npm i karma@^1.0.0 . npm installs karma@1.0.0 rather than latest version karma@1.6.0 . After a little investigation, I figured out that these commands work: npm i karma@^1 and npm i karma@^"1.0.0" (enclose command with double quotes). Anyone can explain how it should work?

I guess that this is not related to karma since it's reproducible with any package.

npm - 4.0.5, node - 7.4.0

Thanks.

Answer 1

It's mentioned in the docs :

Note that most version ranges must be put in quotes so that your shell will treat it as a single argument.

And the example given there follows the advice:

npm install sax@">=0.1.0 <0.2.0"