open a file and order its lines from longest to shortest in javascript

To open a file and order its lines from longest to shortest in JavaScript, you can use Node.js file system module (fs) and read the content of the file.

Here is the code:

index.tsx
const fs = require('fs');

fs.readFile('filename.txt', 'utf-8', (err, data) => {
  if (err) throw err;
  let linesArray = data.split("\n"); // split the text into an array of lines
  linesArray.sort(function(a, b) {
    return b.length - a.length; // sort by descending order of line length
  });
  console.log(linesArray); // print the sorted array of lines
});
363 chars
11 lines

In this code, we first read the content of the file using fs.readFile function. Once we have the data as a string, we convert it to an array of lines using split method.

Then, we sort the array in descending order of line length using sort method and a compare function. Finally, we print the sorted array.