browser-sync: [2.26.10] YError: Invalid first argument. Expected boolean or string but received function.

Issue details

Getting the version or just running browser-sync outputs this error:

# browser-sync --version
YError: Invalid first argument. Expected boolean or string but received function.
    at argumentTypeError (/usr/lib/node_modules/browser-sync/node_modules/yargs/build/lib/argsert.js:64:11)
    at /usr/lib/node_modules/browser-sync/node_modules/yargs/build/lib/argsert.js:45:17
    at Array.forEach (<anonymous>)
    at Object.argsert (/usr/lib/node_modules/browser-sync/node_modules/yargs/build/lib/argsert.js:38:25)
    at Object.version (/usr/lib/node_modules/browser-sync/node_modules/yargs/build/lib/yargs.js:796:19)
    at runFromCli (/usr/lib/node_modules/browser-sync/dist/bin.js:46:10)
    at Object.<anonymous> (/usr/lib/node_modules/browser-sync/dist/bin.js:38:5)
    at Module._compile (internal/modules/cjs/loader.js:955:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)
    at Module.load (internal/modules/cjs/loader.js:811:32)
[Function]

It doesn’t produce an exit code so my Travis-CI builds continued to push it to my repos and breaks my stack’s updater. Very bad.

Build log: https://travis-ci.org/github/demyxco/browsersync/builds/709580148

Steps to reproduce/test case

• npm -g install browser-sync
• browser-sync --version

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

• Browsersync [ 2.26.10 ]
• Node [ v12.15.0 ]
• Npm [ 6.13.4 ]

Affected platforms

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

Browsersync use-case

• API
• Gulp
• Grunt
• [ ✅ ] CLI

If CLI, please paste the entire command below

No issues, works fine even with that exit 0 error.