polymer-build remove comments

[ghost]

Currently the polymer build tool leaves all comments in. If the user specifies js: minify, I believe comments should be removed. This could be achieved here:

https://github.com/Polymer/tools/blob/1fe1c22bfb81ad9195c99fa31ac24c675d15700c/packages/build/src/js-transform.ts#L286

by passing {presets, plugins, comments: false}

[jonapgar]

"minify"

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[quackbarc]

Even supplying bundle.stripComments on polymer.json doesn't actually strip comments away, at least on Polymer 1.0 projects. It's driving me nuts.