运行ionic cordova build ios将导致以下错误：
Preparing Firebase on iOS
IOS project Code Sign Entitlements now set to: LifeBuddy/Resources/LifeBuddy.entitlements
Entitlements file is in reference section.
Error: ios-deploy was not found. Please download, build and install version 1.9.2 or greater from https://github.com/phonegap/ios-deploy into your path, or do 'npm install -g ios-deploy'
[ERROR] An error occurred while running cordova build ios (exit code 1).
运行建议的命令npm install -g ios-deploy时收到此错误：
The following build commands failed:
Check dependencies
Write auxiliary files
(2 failures)
npm ERR! code ELIFECYCLE
npm ERR! errno 65
npm ERR! [email protected] preinstall: `./src/scripts/check_reqs.js && xcodebuild`
npm ERR! Exit status 65
npm ERR!
npm ERR! Failed at the [email protected] preinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/dev-13/.npm/_logs/2018-07-31T08_07_03_860Z-debug.log
试试这个，sudo npm install -g ios-deploy --unsafe-perm = true