If you just want to fix the issue quickly, scroll down to the "solution" section below.
If you're a Homebrew user and you installed node via Homebrew, there is a major philosophical issue with the way Homebrew and NPM work together. If you install node with Homebrew and then try to do npm update npm -g, you may see an error like this:
$ npm update npm -g
| #Unzip the IPA | |
| unzip Application.ipa | |
| #Remove old CodeSignature | |
| rm -R "Payload/Application.app/_CodeSignature" | |
| #Replace embedded mobile provisioning profile | |
| cp "path-to-provisioning-profile/MyEnterprise.mobileprovision" "Payload/Application.app/embedded.mobileprovision" | |
| #If you are resigning to submit to the AppStore you need to extract the entitlements to use later |
| # This is not a ready-to-run script. It just shows the relevant command-line calls. | |
| XC_WORKSPACE=path/to/MyApp.xcworkspace | |
| XC_SCHEME=MyApp | |
| XC_CONFIG=Release | |
| ARCHIVE_PATH=dest/path/to/MyApp.xcarchive | |
| EXPORT_PATH=dest/path/to/MyApp.ipa | |
| DIST_PROFILE=NameOfDistributionProfile | |
| # Build and archive. This can be done by regular developers, using their developer key/profile. |