The syntax for including the Readline module in your application: var.

This works only if the end is not reached. The Readline module provides a way of reading a datastream, one line at a time. Manually close the open file, subsequent next() calls will return false. This works only if the end is not reached. Note that once youve invoked this module, your node program will not terminate. Resets the pointer and starts from the beginning of the file. Readline allows reading of a stream (such as STDIN) on a line-by-line basis. In order to interact with any user, we must first create an. Returns buffer with the line data without the newLineCharacter or false if end of file is reached. The Readline module comes with several methods to interact with users. Getting started with Node.js, npm, Web Apps With Express, Filesystem I/O, Exporting and Consuming Modules, Exporting and Importing Module in node.js, How modules are loaded, Cluster Module, Readline, package.json, Event Emitters, Autoreload on changes, Environment, http and async. Node-readlines can handle files without newLineCharacter after the last line

newLineCharacter - String new line character, only works with one byte characters for now. Accepts an options Object that takes the following values: input - the readable stream to listen to (Required).

readChunk - Integer number of bytes to read at once.

An example of a web server written with Node.

filename - String path to the file you want to read from node options V8 options script.js -e 'script' - arguments Please see the Command-line options document for more information.

Readline module makes it easier for input and reading the output given by the user. This module wraps up the process standard output and process standard input objects. Note that this is synchronous library.ĭocumentation new readlines(filename, ) new readlines(fd, ) Readline Module in Node.js allows the reading of input stream line by line.

There are a lot of libraries using Transform Streams to achieve it, but it seems like a overkill, so I've wrote simple version using only the filesystem module of node. Reading file line by line may seem like a trivial problem, but in node, there is no straightforward way to do it.

Nodejs readline