Error installing gulp bower and running gulp watch

are we using old version of node or latest?
gulp watch is not running got some error

error message

npm install error - npm does not support Node.js v0.12.17

SyntaxError: Use of const in strict mode.
at exports.runInThisContext (vm.js:73:16)
at Module._compile (module.js:443:25)

Are you using Node 0.12.x? If so, update Node.js using nvm. See instructions here:

when they are planning to update the docs here

Done with, didn’t realize that page was out of date. Thanks.