CODEWITHSUNDEEP
node.jslessread-eval-print-loop
sites
sites

Reputation: 21795

Is there a way to enable paging in node js REPL

I would like to see paging when I have long outputs in node js REPL.

Is that possible, how?

Upvotes: 2

Views: 197

Answers (1)

dthree
dthree

Reputation: 20730

Vorpal.js is a Node module that looks like it would do the trick. Vorpal turns your Node app into an interactive CLI, and supports extensions including an implementation of the less command in Node.

Something like this would work:

var vorpal = require('vorpal')();
var less = require('vorpal-less');

vorpal
  .catch('[commands...]')
  .action(function (args, cb) {
    args.commands = args.commands || [];
    var cmd = args.commands.join(' ');
    var res;
    try {
      res = eval(cmd);
    } catch(e) {
      res = e;
    }
    this.log(res);
    cb();
  });

vorpal
  .delimiter('myrepl>')
  .show();

This will turn your application into a REPL within the context of your app, which can also accept the less command:

$ node myrepl.js
myrepl> 6 * 6 | less

36

: (less prompt)

Disclaimer: I wrote Vorpal

Upvotes: 1

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