What do you think of monorepos?

[callumlocke]

You seem to be an advocate of small, separate packages on the whole.

What do you think of the practice of publishing a set of related packages from a single repo?

Examples: Babel, React, Meteor, Ember.

Under which circumstances, if any, would you consider doing this?

[jamestalmage]

Bump! I would also appreciate hearing your thoughts on this.

Relevant: https://youtu.be/1w_W5cd8qRE?t=27m9s (Javascript Air Episode on Babel)

[oligot]

I would also be interested to know your thoughts on monorepos.