Gulp 4 Watch Task, run only one time - javascript

i have trouble to use Gulp 4. My watch-task runs only one time, when detecting changes, inside my html-files.
Where is my mistake? Please help me to fix my gulpfile
Here is my code:
var gulp = require('gulp'),
sass = require('gulp-sass'),
cleanCSS = require('gulp-clean-css'),
autoprefixer = require('gulp-autoprefixer'),
rename = require('gulp-rename'),
inject = require('gulp-inject'),
uglify = require('gulp-uglify'),
concat = require('gulp-concat'),
plumber = require('gulp-plumber'),
babel = require('gulp-babel'),
browserify = require('gulp-browserify'),
clean = require('gulp-clean'),
sourcemaps = require('gulp-sourcemaps'),
htmlmin = require('gulp-html-minifier'),
browserSync = require('browser-sync');
var src = './src/',
dist = './dist/';
//####################################
// MINIFY HTML
gulp.task('html', function(){
gulp.src(dist + '*.html', {force: true})
.pipe(clean());
gulp.src(src + '*.html')
.pipe(htmlmin({collapseWhitespace: true}))
.pipe(gulp.dest(dist));
});
//####################################
// WATCH
gulp.task('default', function(){
gulp.watch([src + '*.html'], gulp.series('html'));
});
When i run the html-task manually, i get the following warning:
The following task did not complete: html
Did you forget to signal async completion?
How can i solve this issue, too?

I solved my issue, with this code change, inside my html file:
gulp.task('html', done => {
gulp.src(dist + '*.html', {force: true})
.pipe(clean());
gulp.src(src + '*.html')
.pipe(htmlmin({collapseWhitespace: true}))
.pipe(gulp.dest(dist));
done();
});
The Watch-Task works now

Related

gulp. moving files in neighbors dir

The simplified structure of the project looks like this. JavaScript files that lie in the es6 directory must be moved to the neighbors directory js.
var gulp = require('gulp');
var babel = require('gulp-babel');
gulp.task('build-js', function () {
gulp.src('app/core/**/es6/**/*.js')
.pipe(babel({
presets: ["env"]
}))
.pipe(gulp.dest(???)); // need move to ../js
});
Please, help me, how to implement this in gulp?
I assume that the babel pipe doesn't move the js files that are in the es6 folder or add any folders. And that your gulpfile.js is at the root level of your "app" folder.
var gulp = require('gulp');
var path = require('path');
var rename = require('gulp-rename');
gulp.task('default', function () {
// with gulpfile.js at root of "app" folder
return gulp.src('core/**/es6/*.js')
.pipe(rename(function (file) {
console.log("file.dirname = " + file.dirname);
// file.dirname = AdminTools\es6
// file.dirname = Permissions\es6
// strip off the last folder 'es6'
var temp = file.dirname.split(path.sep)[0];
file.dirname = temp + "/js";
// file.dirname = AdminTools\js
// file.dirname = Permissions\js
}))
.pipe(gulp.dest('core'));
});

Gulp 4.0: gulp-remember or gulp-cache prevent sass to compile properly (Incremental build)

yesterday I've upgraded my Gulp to 4.0 in order to gain some speed while compiling styles for my project (they got big, right now on my Mac Pro 2016 I need to wait 19seconds)
After some digging I decided to add gulp-cached and gulp-remember to my build.
Here's my current gulpfile.js for the styles:
var gulp = require('gulp'),
sass = require('gulp-sass'),
cached = require('gulp-cached'),
sourcemaps = require('gulp-sourcemaps'),
autoprefixer = require('gulp-autoprefixer'),
remember = require('gulp-remember'),
gs = gulp.series,
concat = require('gulp-concat'),
gp = gulp.parallel;
gulp.task('compile:styles', () => {
return gulp.src([
// Grab your custom scripts
'./assets/scss/**/*.scss'
])
.pipe(sourcemaps.init()) // Start Sourcemaps
.pipe(cached('sass'))
.pipe(sass())
.pipe(autoprefixer({
browsers: ['last 2 versions']
}))
.pipe(remember('sass'))
.pipe(sourcemaps.write('.')) // Creates sourcemaps for minified styles
.pipe(gulp.dest('./assets/css/'));
});
gulp.task('watch:styles', () => {
gulp.watch('./assets/scss/**/*.scss', gs('styles'))
.on('change', function (event) {
console.log("event happened:"+JSON.stringify(event));
if (event.type === 'deleted') {
//delete from gulp-remember cache
remember.forget('sass', event.path);
//delete from gulp-cached cache
delete cache.caches['sass'][event.path];
}
});
});
gulp.task('watch', gp(
'watch:styles'
));
My issue here is that my build works well on first compilation which takes about 3 seconds, later on where ever I do a change it can see in which file I made that change, and it starting to compile, but the output file does not have the changes inside.
I think I am not getting something when it comes to gulp-cached and gulp-remeber. But at the end of the file you can see a function that are supposed to clean the caches once a change was made.
Can you please take a look at my code? Maybe you will have some advice.
Cheers!
### EDIT 26.08
I have encountered the following post while looking for a solution:
http://blog.reactandbethankful.com/posts/2015/05/01/building-with-gulp-4-part-4-incremental-builds/
I went with it accordingly with the following code (but the effect is same as in above example):
// Grab our gulp packages
var gulp = require('gulp'),
sass = require('gulp-sass'),
sourcemaps = require('gulp-sourcemaps'),
autoprefixer = require('gulp-autoprefixer'),
gs = gulp.series,
gp = gulp.parallel,
cache = require('gulp-memory-cache');
gulp.task('compile:styles', () => {
return gulp.src('./assets/scss/**/*.scss', {since: cache.lastMtime('sass')})
.pipe(sourcemaps.init()) // Start Sourcemaps
.pipe(sass())
.pipe(autoprefixer({
browsers: ['last 2 versions']
}))
.pipe(cache('sass'))
.pipe(sourcemaps.write('.')) // Creates sourcemaps for minified styles
.pipe(gulp.dest('./assets/css/'));
});
gulp.task('watch:styles', () => {
gulp.watch('./assets/scss/**/*.scss', gs('compile:styles'))
.on('change', cache.update('sass'));
});
gulp.task('build', gs(
'compile:styles',
'watch:styles'
));
I have created a complete gulpfile.js here:
https://gist.github.com/MkBeeCtrl/5a6a0900dba1c5d42dc7b6da211b3e95
With js files compilation included.
// Grab our gulp packages
var gulp = require('gulp'),
sass = require('gulp-sass'),
sourcemaps = require('gulp-sourcemaps'),
autoprefixer = require('gulp-autoprefixer'),
gs = gulp.series,
gp = gulp.parallel,
cached = require('gulp-cached'),
dependents = require('gulp-dependents');
gulp.task('compile:styles', () => {
return gulp.src('./assets/scss/**/*.scss')
.pipe(cached('sass'))
.pipe(dependents())
.pipe(sourcemaps.init()) // Start Sourcemaps
.pipe(sass())
.pipe(autoprefixer({browsers: ['last 2 versions']}))
.pipe(sourcemaps.write('.')) // Creates sourcemaps for minified styles
.pipe(gulp.dest('./assets/css/'));
});
gulp.task('watch:styles', () => {
gulp.watch('./assets/scss/**/*.scss', gs('compile:styles'))
.on('change', function (event) {
console.log("event happened:"+JSON.stringify(event));
if (event.type === 'deleted') {
//delete from gulp-remember cache
//emember.forget('sass', event.path);
//delete from gulp-cached cache
delete cache.caches['sass'][event.path];
}
});
});
gulp.task('build', gs(
'compile:styles',
'watch:styles'
));
The above solution works the way I want, so if you want to produce separate CSS files from multiple imported files, you can go with it. It's not blazing fast solution but I have managed to save about 1 second when recompiling (already saved about 15s, when I started this topic, a build lasted 19 secs):
1st compile: ~3.5s
2nd or late: ~2.4s
You dont need to concate or order here as the whole order thing happens when you import scss files into you main file.
Try this one. I suppose it might do what you want to achieve:
'use strict';
const gulp = require('gulp');
const path = require('path');
const cached = require('gulp-cached');
const remember = require('gulp-remember');
const sass = require('gulp-sass');
const autoprefixer = require('gulp-autoprefixer');
const sourcemaps = require('gulp-sourcemaps');
const concat = require('gulp-concat');
gulp.task('styles:compile', function() {
return gulp.src('assets/scss/**/*.scss', {since: gulp.lastrun('styles:compile')})
.pipe(sourcemaps.init())
//.pipe(cached('sass')) - a smarter but heavier alternative to since
.pipe(remember('sass'))
.pipe(concat('all.sass'))
.pipe(sass())
.pipe(autoprefixer({ browsers: ['last 2 versions'] }))
.pipe(sourcemaps.write())
.pipe(gulp.dest('assets/css/'));
});
gulp.task('styles:watch', function() {
var watcher = gulp.watch('assets/scss/**/*.scss', gulp.series('compile:styles'));
watcher.on('unlink', function(filepath) {
remember.forget('sass', path.resolve(filepath));
//delete cached.caches.sass[path.resolve(filepath)];
});
});
gulp.task('default', gulp.series('styles:compile', 'styles:watch'));
Install path plugin to resolve paths. Use 'unlink' event if you want to detect when a file gets deleted. since just checks dates which is faster compared to cached that reads and compares content. But cached is more reliable (for example, when you deleted and then returned the file using your IDE tools since will not work since the file will be returned again with its old date). Also check paths - I might have messed them up.

Cyclic assembly gulp watch

There is a project, its structure:
I do run gulp watch, when changing sass-file everything works correctly , but when I change js-file - assembly going infinite.
gulpfile:
var gulp = require('gulp');
var uglify = require('gulp-uglify');
var concat = require('gulp-concat');
var compass = require('gulp-compass');
gulp.task('compress-js', function() {
return gulp.src([
'./www/js/jquery/**/*.js',
'./www/js/vendor/**/*.js',
'./www/js/lib/**/*.js',
'./www/js/common/app.js',
'./www/js/pages/**/*.js',
'./www/js/common/main.js',
'!./www/js/combine.js'
])
.pipe(concat('combine.js'))
.pipe(uglify())
.pipe(gulp.dest('./www/js/'));
});
gulp.task('compress-css', function() {
return gulp.src('./scss/**/*.scss')
.pipe(compass({
config_file: './scss/config.rb',
css: './www/css',
sass: './scss'
}))
.pipe(gulp.dest('./www/css/'));
});
gulp.task('watch', function() {
gulp.watch(['./scss/**/*.scss'], ['compress-css']);
gulp.watch(['./www/js/**/*.js'], ['compress-js']);
});
Tell me please, what is wrong here?
The problem seems in your gulp.watch
gulp.watch(['./www/js/**/*.js'], ['compress-js']);
When you concat the js files for the build you exclude combine.js but you take it as good for the watch so he loop

es.merge doesn't merge my streams

I have the following gulp task:
var es = require('event-stream'),
concat = require('gulp-concat'),
templateCache = require('gulp-angular-templatecache');
var scripts = gulp.src(paths.js + '/**/*.js'),
templates = gulp.src(paths.templates + '/**/*.html')
.pipe(templateCache('templates.js', {
module: 'spot.im.core',
standalone: false
}));
es.merge(templates, scripts)
.pipe(concat('all.js'))
.pipe(gulp.dest(paths.dist))
When running this, I don't get the templates inside all.js. But, when I am doing:
es.merge(templates)
.pipe(concat('all.js'))
.pipe(gulp.dest(paths.dist))
all.js contains the templates.
What am I doing wrong?
I think you forgot to define a task here; and, you can replace event-stream with merge-stream instead. I've had no trouble running merge-stream in many gulp tasks.
var merge = require('merge-stream'),
concat = require('gulp-concat'),
templateCache = require('gulp-angular-templatecache');
gulp.task('default', function () {
var scripts = gulp.src(paths.js + '/**/*.js');
var templates = gulp.src(paths.templates + '/**/*.html')
.pipe(templateCache('templates.js', {
module: 'spot.im.core',
standalone: false
}));
return merge(templates, scripts)
.pipe(concat('all.js'))
.pipe(gulp.dest(paths.dist));
});
Run on the command line with gulp.

gulp.js strips relative paths of output files [duplicate]

This question already has an answer here:
Why does gulp.src not like being passed an array of complete paths to files?
(1 answer)
Closed 7 years ago.
I have a gulp.js configuration set up to automatically compile my SASS and CoffeeScript on save. It works, except that the relative paths are totally lost, and all the files are output into a single flat directory. I would like to retain the sub-directory structure of my app/assets/sass and app/assets/coffee directories when the final CSS and JS files are compiled. Here is my gulpfile:
var gulp = require('gulp');
var plumber = require('gulp-plumber');
var gutil = require('gulp-util');
var minifycss = require('gulp-minify-css');
var autoprefixer = require('gulp-autoprefixer');
var sass = require('gulp-ruby-sass');
var coffee = require('gulp-coffee');
var sassDir = 'app/assets/sass';
var coffeeDir = 'app/assets/coffee';
gulp.task('sass', function() {
return gulp.src(sassDir + '/**/*.scss')
.pipe(plumber())
.pipe(sass({ style: 'compress' }).on('error', gutil.log))
.pipe(autoprefixer('last 10 versions'))
.pipe(minifycss())
.pipe(gulp.dest('public/css'));
});
gulp.task('coffee', function() {
return gulp.src(coffeeDir + '/**/*.coffee')
.pipe(plumber())
.pipe(coffee({ bare: true }).on('error', gutil.log))
.pipe(gulp.dest('public/js/coffee)'));
});
gulp.task('watch', function() {
gulp.watch(sassDir + '/**/*.scss', ['sass']);
gulp.watch(coffeeDir + '/**/*.coffee', ['coffee']);
});
gulp.task('default', ['sass', 'coffee', 'watch']);
only split path string with / and get the last which is the filename and extension and then cut it
to get files path
gulp.task('testing', function() {
var orginalFile="tt/ee/style.scss";
var pathArray=orginalFile.split('/');
var destination=orginalFile.replace(pathArray[pathArray.length-1],"")
gulp.src(orginalFile)
.pipe(sass())
.pipe(gulp.dest(destination));
})
});

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