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JavaScript

Francis N
Francis N
10,376 Points
Posted by Francis N
Francis N
10,376 Points

How to use gulp-sourcemaps with gulp-useref & gulp-if?

Hello,

I am quite new to gulp but I am getting good practice in after watching the gulp basics and 'user-ref' courses. I also found https://css-tricks.com/gulp-for-beginners/ to be very helpful. But I am currently running into an issue where I can't get my minified css and js to include a source map. I looked into userref and it looks like there may be a solution using transform stream (link: https://www.npmjs.com/package/gulp-useref#transform-streams) but I do not know how to implement or know if this work.

Here is my code. Any advice or help would be appreciated. If more code is needed, I can paste the whole gulpfile.js

gulp.task('useref', function() {
      return gulp.src('app/*.html')
        .pipe(useref())
        .pipe(gulpIf('*.js', uglify()))
        .pipe(gulpIf('*.css', cssnano()))
        .pipe(gulp.dest('dist'))
    });

here is what the example of transform-streams look like

var gulp = require('gulp'),
    sourcemaps = require('gulp-sourcemaps'),
    useref = require('gulp-useref'),
    lazypipe = require('lazypipe');

gulp.task('default', function () {
    return gulp.src('index.html')
        .pipe(useref({}, lazypipe().pipe(sourcemaps.init, { loadMaps: true })))
        .pipe(sourcemaps.write('maps'))
        .pipe(gulp.dest('dist'));
});