peek the first or last record in a leveldb range.
var levelup = require('levelup')
var db = levelup(PATH_TO_DB)
var peek = require('level-peek')
//get the first value, 'a' or after
peek.first(db, {start: 'a'}, function (err, key, value) {
console.log(key, value)
})
//get last value, 'z' or before.
peek.last(db, {end: 'z'}, function (err, key, value) {
console.log(key, value)
})see also, level-fix-range and Level/levelup#110
MIT