Package Exports

read-nth-line

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (read-nth-line) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

read-nth-line

Read the nth line of a file efficiently, without reading the rest of the file. Your system must have sed available.

Usage

Asynchronous

const nthLine = require('read-nth-line');

nthLine.read(__dirname + '/notes.txt', 150).then(result => {
  console.log(result);
}).catch(err => {
  console.log(err);
});

Synchronous

const nthLine = require('read-nth-line');

try {
  console.log(nthLine.readSync(__dirname + '/notes.txt', 150));
} catch (err) {
  console.log(err);
}

The first line in your file is line 0, and if you don't pass in an absolute path, the file path is relative to the directory that node is executing in. Consider using __dirname to fully qualify the file path.

Discussion

This is just a wrapper around invoking sed in a shell. Newlines (\r\n and \n) are stripped from the end of the result. Errors thrown contain the error message from sed.