Firstline_delete

What is this?

Firstline_delete is a npm async module for NodeJS, that reads and returns the first line of any file and then deletes it. It uses native JS promises.

How to install

yarn add firstline_delete

Usage

firstline_delete(filePath, [lineEnding])

• filePath (String): the full path to the file you want to read.
• lineEnding (String, optional): the character used for line ending (defaults to \n).

Reads first line from filePath and then deletes it.

Returns a promise, eventually fulfilled with a string.

Examples

// Imagine the file content is:
// abc
// def
// ghi
//
 
firstline_delete('./testfile.txt');
// -> Returns a promise that will be fulfilled with 'abc'.
 
firstline_delete('./textfile.txt', '\r');
// -> Same as above, but using '\r' as line ending.