style.js

// Style 1
content_list = considered_devs
  .filter(x => x.content)
  .map(x => {
    // this is a more complex lambda
  })
  .map(moreComplexFunction)
  .map(x => x.content)
  .reduce((accum, x) => accum.concat(x), [])

// Style 2
let content_list = considered_devs.filter(x => x.content)
                                  .map(x => {
                                     // this is a more complex lambda
                                  })
                                  .map(moreComplexFunction)
                                  .map(x => x.content)
                                  .reduce((accum, x) => accum.concat(x), [])

// Style 3
let content_list = considered_devs.filter(
    x => x.content
).map(x => {
    // this is a more complex lambda
}).map(
    moreComplexFunction
).map(
    x => x.content
).reduce(
    (accum, x) => accum.concat(x), 
    []
)    

// Style 4
let content_list = 
    considered_devs.filter(x => x.content)
                   .map(x => {
                       // this is a more complex lambda
                   })
                   .map(moreComplexFunction)
                   .map(x => x.content)
                   .reduce((accum, x) => accum.concat(x), [])