Creator of Lodash here. From my experience the foundation is a pretty chill, hands off, non-profit. I sought out and voluntarily joined the Dojo Foundation early in Lodash's development (~2013). At the time the Dojo Foundation was the only JS foundation I knew of that was open to outside projects (the jQuery Foundation was really only for jQuery projects back then). Eventually the Dojo Foundation and the jQuery Foundation merged. It was great! Regardless of the name the foundation has proven valuable. Whether it's CLA management, PR bots, conduct reviews, representation at TC39, help with trademarks, licenses, legal, etc. they've always been friendly and more than happy to help. When possible they also hold events to educate and encourage new open source contributors which is pretty cool!