Issue details

My module have a dependency to browser-synch version ~2.11.0, and after the publishing of version 2.26 of browser-synch (and browser-synch-client), I've got this error:

Cannot find module 'etag'

Because my dependencies tree is broken

Steps to reproduce/test case

• I'm declaring a dependency to browser-synch version ~2.11.0 (so I get 2.11.2)
• This version declares a dependency to browser-synch-client version ^2.3.3 (so I got 2.5.1)
• After the publishing of version 2.26.0 of browser-synch and browser-synch-client ^2.3.3 = 2.26.0 of browser-synch-client that is not compatible with browser-synch 2.11.2

Please specify which version of Browsersync, node and npm you're running

• Browsersync [ 2.11.2 ]
• Node [ 8.12.0 ]
• Npm [ 6.4.1 ]

Affected platforms

• linux
• windows
• OS X
• freebsd
• solaris
• other (please specify which)

Browsersync use-case

• API
• Gulp
• Grunt
• CLI