var createError = require('errno').create var LevelUPError = createError('LevelUPError') var NotFoundError = createError('NotFoundError', LevelUPError) NotFoundError.prototype.notFound = true NotFoundError.prototype.status = 404 module.exports = { LevelUPError: LevelUPError, InitializationError: createError('InitializationError', LevelUPError), OpenError: createError('OpenError', LevelUPError), ReadError: createError('ReadError', LevelUPError), WriteError: createError('WriteError', LevelUPError), NotFoundError: NotFoundError, EncodingError: createError('EncodingError', LevelUPError) }