gulp-uglify won't preserve files order

问题

When I use gulp-uglify to minify the Javascript files the order gets messed up.

Lets say I have this task working as expected:

var gulp = require('gulp');
var rename = require('gulp-rename');
var gp_concat = require('gulp-concat');

gulp.task('js', function() {
    gulp.src([
            './public/bower_components/jquery/dist/jquery.min.js',
            './public/js/functions.js',
        ])
        .pipe(gp_concat('combined.js'))
        .pipe(gulp.dest(path.js + '/dist'))
});

Adding the uglify line to it changes the order of the jquery and functions files and places functions.js above jquery.

var gulp = require('gulp');
var rename = require('gulp-rename');
var uglify = require('gulp-uglify');
var gp_concat = require('gulp-concat');

gulp.task('js', function() {
    gulp.src([
            './public/bower_components/jquery/dist/jquery.min.js',
            './public/js/functions.js',
        ])
        .pipe(gp_concat('combined.js'))
        .pipe(gulp.dest(path.js + '/dist'))
        .pipe(uglify({
            preserveComments: 'license'
        }))
        .pipe(rename({suffix: '.min'}))
        .pipe(gulp.dest(path.js + '/dist'))
});

Any possible solution to it ? Of course, functions.js is just a plane Javascript file with funtions in it and are not wrapped in an IIFE.

回答1:

Karol Klepacki's answer is correct about using hoist_funs, but that's an option for the UglifyJS compressor. As such it needs to be provided within the compress option:

.pipe(uglify({
   preserveComments: 'license',
   compress: { hoist_funs: false }
}))

回答2:

Please try disabling functions hoisting:

var gulp = require('gulp');
var rename = require('gulp-rename');
var uglify = require('gulp-uglify');
var gp_concat = require('gulp-concat');

gulp.task('js', function() {
    gulp.src([
            './public/bower_components/jquery/dist/jquery.min.js',
            './public/js/functions.js',
        ])
        .pipe(gp_concat('combined.js'))
        .pipe(gulp.dest(path.js + '/dist'))
        .pipe(uglify({
            preserveComments: 'license',
            hoist_funs: false
        }))
        .pipe(rename({suffix: '.min'}))
        .pipe(gulp.dest(path.js + '/dist'))
});

来源：https://stackoverflow.com/questions/39510601/gulp-uglify-wont-preserve-files-order