How to throw custom error when node-sass compile sass code?

Question

I choose node-sass to compile my sass code, but what things can I do when the code is compiling?

In other words, I want make my own rules and throw custom errors in certain condition when compiling.

Answer 1

If you have a look for node-sass (according to 3.xx) documentation (on the readme) - it explains how to add your own error messaging via the error object when you render.

render callback

error object .

from documentation

var sass = require('node-sass');
sass.render({
  file: scss_filename,
  [, options..]
}, function(err, result) { /*...*/ });

custom error message

var sass = require('node-sass');
sass.render({
  file: scss_filename,
  [, options..]
}, function(err, result) { 
  if (err) throw new Error(err)
});