gulp-sass-vars

Inject variables in sass files from a js object.

Usage

npm install gulp-sass-vars

var sassVars = require('gulp-sass-vars');

gulp.task('sass', function() {
  const variables = {
    theme: null,
    url: 'https://github.com/giowe/gulp-sass-vars',
    font: {
      family: ["'Open Sans'", 'sans-serif'],
      size: '1.6em',
      color: 'rgb(0,0,0)',
      'line-height': 1.5
    },
    sizes: ['xs', 'sm', 'lg'],
    responsive: true,
    display: 'flex'
  };

  return gulp.src('src/styles/main.scss')
    .pipe(sassVars(variables, { verbose: true }))
    .pipe(sass())
    .pipe(gulp.dest('dist'));
});

This script will prepend the following code to your main.scss file:

$theme: null;
$url: 'https://github.com/giowe/gulp-sass-vars';
$font: (
  'family': ('\'Open Sans\'', 'sans-serif'),
  'size': 1.6em,
  'color': rgb(0,0,0),
  'line-height': 1.5
);
$sizes: ('xs', 'sm', 'lg');
$responsive: true;
$display: 'flex';

So you can use all those variables inside your sass file.