Latest pubsub version breaks dependencies with grpc (doesn't use common-grpc package)

[lostpebble]

Environment details

• OS: Linux
• Node.js version: 8.7.0
• npm version: 5.4.2
• google-cloud-node version:

Steps to reproduce

Try use the latest versions of @google-cloud/datastore and @google-cloud/pubsub together.

Because the latest version of @google-cloud/pubsub includes grpc as a direct dependency instead of using the package which seems to have been created for linking grpc together between libraries (@google-cloud/common-grpc), the versions of GRPC are clashing and causing problems such as #2667

To get my project working I had to revert to @google-cloud/pubsub:0.14.2

It appears to have been changed during this commit: #2627

[ThomWright]

I can reproduce with the following in my package.json:

"@google-cloud/pubsub": "^0.14.5",
"grpc": "^1.6.6",

Fixing @google-cloud/pubsub:0.14.2 worked for me too.

[watermanio]

I think I'm seeing something related using PubSub on GCF with @google-cloud/pubsub:0.14.6:

OS: OS X
Node.js version: v6.11.1 (for GCF)

var Buffer = require("safe-buffer").Buffer;
var pubsub = require('@google-cloud/pubsub')();

exports.publish = function publish(event, callback) {
    var topic = pubsub.topic('outbound-topic');
    var publisher = topic.publisher();
    var message = new Buffer('New message!');
    publisher.publish(message, function(err, data) {
        callback(err, data);
    });
};

Throws the following error:

info: Function crashed
info: TypeError: message.encode(...).finish is not a function
    at BundleDescriptor.getByteLength [as byteLengthFunction] (./node_modules/google-gax/lib/grpc.js:262:36)
    at ./node_modules/google-gax/lib/bundling.js:338:38
    at Array.forEach (native)
    at BundleExecutor.schedule (./node_modules/google-gax/lib/bundling.js:337:16)
    at ./node_modules/google-gax/lib/bundling.js:474:20
    at Canceller.call (./node_modules/google-gax/lib/api_callable.js:110:19)
    at Bundleable.call (./node_modules/google-gax/lib/bundling.js:473:12)
    at ./node_modules/google-gax/lib/api_callable.js:356:17

[stephenplusplus]

cc @jsididris who reported this in #2717.

[callmehiphop]

@lostpebble I just cut a new patch release. If upgrading to that package does not fix your issue, feel free to re-open.

[stephenplusplus]

@lostpebble RE: #2738, I take it this didn't help anything?

rm -rf node_modules
npm cache clean
npm install