gulp-sass-pedigree

Incremental Caching System for Gulp and NodeSass

Where

• https://github.com/hitmands/gulp-sass-pedigree
• https://www.npmjs.com/package/gulp-sass-pedigree

Info

There are a lot of community-based solutions which face the issue regarding the gulp incremental building (gulp-progeny is definitely one of these). Because of its agnostic nature, gulp cannot know the related files to the one edited, and, because of this, it needs to resync all the sources with their corresponding outputs gulp.src('src/**/*.scss').pipe(gulp.dest('./dest')).

Why choosing gulp-sass-pedigree?

Because it is specifically designed on top of gulp and node-sass, it isn't thought to be agnostic and work with different file types (as gulp-progeny is). For example, while editing a parent, you don't need to add any imported file to the stream because that is how sass works, otherwise, you need to add any parent while editing a child and that is what gulp-sass-pedigree exactly does.

Features

• No unnecessary file system access (fs.existsSync only)
• Multiple inline imports @import "foo", "baz", "foobaz";
• Nested imports .foo { @import "baz"; } and .foobaz { @import "foo"; }
• Top files only (eg: if a => b => c while editing c, only a will be added to the stream)
• Sass Specific file name convention (eg: it handles foo, but also _foo with or without extension)

Getting Started

npm install --save-dev gulp-sass-pedigree

gulpfile

const gulp = require('gulp');
const sass = require('gulp-sass');
const options = {
  ext: '.scss', // string (the file extension)
  verbose: false // boolean,
  includePaths: [] // string[] (additional paths where to look for files
};
const {study, getAncestors} = require('gulp-sass-pedigree')(options);

gulp.task('sass:all', () => {

  return gulp
    .src('path/to/**/*.scss')
    .pipe(study())
    .pipe(sass())
    .pipe(gulp.dest('./dist'))
  ;
});

gulp.task('sass:watch', ['sass:all'], () => {
  
  return gulp
    .watch('path/to/**/*.scss', event => {
      
      return gulp
        .src(event.path)
        .pipe(getAncestors())    
        .pipe(sass())
        .pipe(gulp.dest('./dist'))
      ;
    })
  ;
});