I have an array of objects like this:
let list = [ { \'items\': [ \'item 1\', \'item 2\' ] }, { \'items\': [ \'item 3\' ]
https://lodash.com/docs/4.17.14#flatten
And
https://lodash.com/docs/4.17.14#flattenDeep
Look like they're exactly what you need.