Use object destructuring

Replace `·ctx.length·+·Math.max(⏎········...completions.map(completion·=>·completion.length)⏎······` with `⏎········ctx.length·+⏎········Math.max(...completions.map((completion)·=>·completion.length)`

Replace `null,·isContext` with `⏎········null,⏎········isContext⏎·········`

Replace `········.filter(completion·=>` with `··············.filter((completion)·=>⏎···············`

Replace `··········?·((ctx·+·completion).startsWith(buf.trim())` with `··················?·(ctx·+·completion).startsWith(buf.trim())·&&`

Replace `&&·(ctx·+·completion)·!==·buf.trim())` with `········ctx·+·completion·!==·buf.trim()`

Replace `··········:·(ctx·===·buf.trim())` with `··················:·ctx·===·buf.trim(),⏎··············`

Replace `········.map(caption` with `··············.map((caption)`

Replace `··········` with `················`