升级npm和nodejs后如何修复npm软件包

Question

In this case i how to fix protractor .

i have installed protractor v1.6.1 globally use npm v below 2 and node below 1.

Along the way i update both npm and node , now i use npm v3.7.2 and node v4.2.6 . As the protractor say about it's compatibility say i should use version 3, which match node v 4 .

i stupidly do delete manually the old protractor v1.6.1 when i install new protractor which is v3.1.1 it say located on

X:\nodejs
`-- protractor@3.1.1

but when i have to verify it's working, with protractor --version . It yell like so :

Error cannot find module `X:\AppData\Roaming\npm\node_modules\protractor\bin\protractor
at ...

how to fix that? Thanks

Answer 1

in case of protractor moving or delete these file just solve the problem if you configure npm , nodejs properly and install new protractor successfully.

X:\AppData\Roaming\npm\protractor
X:\AppData\Roaming\npm\protractor.md

for save i also move

X:\AppData\Roaming\npm\webdriver-manager
X:\AppData\Roaming\npm\webdriver-manager.md

You can also choose to use npm which installed on the nodejs installation dir . For detail about doing that you can read more about it here (option 3).

For choosing the option you can prefer with the npm config prefix which currenly you use. To know about it run the following command :

npm config get prefix -g

i choose option 3 because currently my machine use

X:\nodejs

as it's prefix. For windows and troubleshooting related you can read here , and for npm config prefix itself you can read here