Walmart continues to beef up its portfolio of digital brands, announcing on Friday that it had acquired Bare Necessities, an online retailer of lingerie, swimwear, hosiery and other intimates. Walmart declined to disclose the terms of the deal. The lingerie company, founded in 1998, will operate independently of Walmart. Over time, the e-commerce giant says it will make Bare Necessities’ products available on Walmart.com, as well as on Jet.com, which Walmart acquired for more than $3 billion in 2016 to bolster its e-commerce business. Walmart has long been one of the most active acquirers of startups and hasn’t slowed down in 2018.