Related
I am building a website on gulp, this code snippet basically contains 3 tasks browser-sync jekyll-build stylus, browser-sync task depends upon jekyll-build.
browser-sync works fine but the stylus function in which I am returning a stream is giving a error which is not expected.
Below is my code snippet.
I am returning a stream here which is one of the solutions mentioned in the doc Async Completion but still I get the error.
var gulp = require('gulp'),
plumber = require('gulp-plumber'),
browserSync = require('browser-sync'),
stylus = require('gulp-stylus'),
uglify = require('gulp-uglify'),
concat = require('gulp-concat'),
jeet = require('jeet'),
rupture = require('rupture'),
koutoSwiss = require('kouto-swiss'),
prefixer = require('autoprefixer-stylus'),
imagemin = require('gulp-imagemin'),
cp = require('child_process');
var messages = {
jekyllBuild: '<span style="color: grey">Running:</span> $ jekyll build'
};
var jekyllCommand = (/^win/.test(process.platform)) ? 'jekyll.bat' : 'jekyll';
/**
* Build the Jekyll Site
*/
gulp.task('jekyll-build', function (done) {
browserSync.notify(messages.jekyllBuild);
return cp.spawn(jekyllCommand, ['build'], {stdio: 'inherit'})
.on('close', done);
});
/**
* Wait for jekyll-build, then launch the Server
*/
gulp.task('browser-sync', gulp.series('jekyll-build'), function() {
browserSync({
server: {
baseDir: '_site'
}
});
done();
});
/**
* Stylus task
*/
gulp.task('stylus', function() {
return gulp.src('src/styl/main.styl').pipe(plumber())
.pipe(
stylus({
use: [koutoSwiss(), prefixer(), jeet(), rupture()],
compress: true,
})
)
.pipe(gulp.dest('_site/assets/css/'))
.pipe(gulp.dest('assets/css'))
.pipe(browserSync.stream());
});
ERROR SHOWN BELOW
[23:28:52] Using gulpfile ~/berserker1.github.io/gulpfile.js
[23:28:52] Starting 'default'...
[23:28:52] Starting 'browser-sync'...
[23:28:52] Starting 'jekyll-build'...
Configuration file: /home/aaryan/berserker1.github.io/_config.yml
Source: /home/aaryan/berserker1.github.io
Destination: /home/aaryan/berserker1.github.io/_site
Incremental build: disabled. Enable with --incremental
Generating...
done in 0.234 seconds.
Auto-regeneration: disabled. Use --watch to enable.
[23:28:52] Finished 'jekyll-build' after 818 ms
[23:28:52] Finished 'browser-sync' after 819 ms
[23:28:52] Starting 'stylus'...
[23:28:53] The following tasks did not complete: default, stylus
[23:28:53] Did you forget to signal async completion?
There is an issue here (whether it is the same as the one in your question we'll see if it helps):
gulp.task('browser-sync', gulp.series('jekyll-build'), function() {
browserSync({
server: {
baseDir: '_site'
}
});
done();
});
I gulp v4 task takes only two arguments - the code above has three. This should be correct:
gulp.task('browser-sync', gulp.series('jekyll-build', function(done) {
browserSync({
server: {
baseDir: '_site'
}
});
done();
}));
Plus, I added the done parameter in the first line. See if this helps.
I'm trying to run the command below but unfortunately I run into errors.
$ gulp build
In my terminal and I get this assertion error. I've uninstalled node and NPM and reinstalled again using brew - How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X) with these steps. My node version is v10.5.0 and npm version is 6.1.0.
My system is MacOS High Sierra 10.13.2
assert.js:269
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (bulkit/startup-kit/node_modules/undertaker/lib/set-task.js:10:3)
at Gulp.task (startup-kit/node_modules/undertaker/lib/task.js:13:8)
at Object.<anonymous>
at Module._compile (internal/modules/cjs/loader.js:702:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
at Module.load (internal/modules/cjs/loader.js:612:32)
at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
at Function.Module._load (internal/modules/cjs/loader.js:543:3)
at Module.require (internal/modules/cjs/loader.js:650:17)
at require (internal/modules/cjs/helpers.js:20:18)
package.json
{
"name": "bulkit-startup",
"version": "0.0.1",
"description": "Bulkit Startup Kit",
"main": "Gruntfile.js",
"devDependencies": {
"autoprefixer": "^6.3.6",
"browser-sync": "^2.24.5",
"gulp": "^4.0.0",
"gulp-clean": "^0.3.2",
"gulp-concat": "^2.6.0",
"gulp-postcss": "^6.1.0",
"gulp-sass": "^2.2.0",
"gulp-sourcemaps": "^1.6.0",
"jquery": "^3.3.1",
"mq4-hover-shim": "^0.3.0",
"panini": "^1.3.0",
"rimraf": "^2.5.2"
},
"engines": {
"node": ">=0.10.1"
},
"scripts": {
"start": "gulp",
"build": "gulp build"
},
"repository": {
"type": "git",
"url": "https://github.com/cssninjaStudio/bulkit.git"
},
"bugs": {
"url": "https://github.com/cssninjaStudio/bulkit/issues",
"email": "support#cssninja.io"
},
"author": "Css Ninja <hello#cssninja.io> (https://cssninja.io/themes/bulkit)",
"license": "Commercial",
"private": true,
"dependencies": {
"bulma": "^0.7.0",
"del": "^3.0.0",
"jquery-waypoints": "^2.0.5",
"jquery.counterup": "^2.1.0",
"scrollreveal": "^3.4.0",
"slick-carousel": "^1.8.1",
"wallop": "^2.4.1"
}
}
gulpfile.js
var gulp = require('gulp');
var clean = require('gulp-clean');
var sass = require('gulp-sass');
var sourcemaps = require('gulp-sourcemaps');
var postcss = require('gulp-postcss');
var autoprefixer = require('autoprefixer');
var mq4HoverShim = require('mq4-hover-shim');
var rimraf = require('rimraf').sync;
var browser = require('browser-sync');
var panini = require('panini');
var concat = require('gulp-concat');
var port = process.env.SERVER_PORT || 8080;
var nodepath = 'node_modules/';
var assetspath = 'assets/';
// Starts a BrowerSync instance
gulp.task('server', ['build'], function(){
browser.init({server: './_site', port: port});
});
// Watch files for changes
gulp.task('watch', function() {
gulp.watch('scss/**/*', ['compile-scss', browser.reload]);
gulp.watch('sass/**/*', ['compile-sass', browser.reload]);
gulp.watch('js/**/*', ['copy-js', browser.reload]);
gulp.watch('images/**/*', ['copy-images', browser.reload]);
gulp.watch('html/pages/**/*', ['compile-html']);
gulp.watch(['html/{layouts,includes,helpers,data}/**/*'], ['compile-html:reset','compile-html']);
gulp.watch(['./src/{layouts,partials,helpers,data}/**/*'], [panini.refresh]);
});
// Erases the dist folder
gulp.task('reset', function() {
rimraf('bulma/*');
rimraf('scss/*');
rimraf('assets/css/*');
rimraf('assets/fonts/*');
rimraf('images/*');
});
// Erases the dist folder
gulp.task('clean', function() {
rimraf('_site');
});
// Copy Bulma filed into Bulma development folder
gulp.task('setupBulma', function() {
//Get Bulma from node modules
gulp.src([nodepath + 'bulma/*.sass']).pipe(gulp.dest('bulma/'));
gulp.src([nodepath + 'bulma/**/*.sass']).pipe(gulp.dest('bulma/'));
});
// Copy static assets
gulp.task('copy', function() {
//Copy other external font and data assets
gulp.src(['assets/fonts/**/*']).pipe(gulp.dest('_site/assets/fonts/'));
gulp.src([nodepath + 'slick-carousel/slick/fonts/**/*']).pipe(gulp.dest('_site/assets/css/fonts/'));
gulp.src([nodepath + 'slick-carousel/slick/ajax-loader.gif']).pipe(gulp.dest('_site/assets/css/'));
});
//Theme Sass variables
var sassOptions = {
errLogToConsole: true,
outputStyle: 'compressed',
includePaths: [nodepath + 'bulma/sass']
};
//Theme Scss variables
var scssOptions = {
errLogToConsole: true,
outputStyle: 'compressed',
includePaths: ['./scss/partials']
};
// Compile Bulma Sass
gulp.task('compile-sass', function () {
var processors = [
mq4HoverShim.postprocessorFor({ hoverSelectorPrefix: '.is-true-hover ' }),
autoprefixer({
browsers: [
"Chrome >= 45",
"Firefox ESR",
"Edge >= 12",
"Explorer >= 10",
"iOS >= 9",
"Safari >= 9",
"Android >= 4.4",
"Opera >= 30"
]
})//,
//cssnano(),
];
//Watch me get Sassy
return gulp.src('./bulma/bulma.sass')
.pipe(sourcemaps.init())
.pipe(sass(sassOptions).on('error', sass.logError))
.pipe(postcss(processors))
.pipe(sourcemaps.write())
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile Theme Scss
gulp.task('compile-scss', function () {
var processors = [
mq4HoverShim.postprocessorFor({ hoverSelectorPrefix: '.is-true-hover ' }),
autoprefixer({
browsers: [
"Chrome >= 45",
"Firefox ESR",
"Edge >= 12",
"Explorer >= 10",
"iOS >= 9",
"Safari >= 9",
"Android >= 4.4",
"Opera >= 30"
]
})//,
//cssnano(),
];
//Watch me get Sassy
return gulp.src('./scss/core.scss')
.pipe(sourcemaps.init())
.pipe(sass(sassOptions).on('error', sass.logError))
.pipe(postcss(processors))
.pipe(sourcemaps.write())
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile Html
gulp.task('compile-html', function() {
gulp.src('html/pages/**/*.html')
.pipe(panini({
root: 'html/pages/',
layouts: 'html/layouts/',
partials: 'html/includes/',
helpers: 'html/helpers/',
data: 'html/data/'
}))
.pipe(gulp.dest('_site'))
.on('finish', browser.reload);
});
gulp.task('compile-html:reset', function(done) {
panini.refresh();
done();
});
// Compile css from node modules
gulp.task('compile-css', function() {
return gulp.src([
nodepath + 'slick-carousel/slick/slick.css',
nodepath + 'slick-carousel/slick/slick-theme.css',
nodepath + 'wallop/css/wallop.css',
//Additional static css assets
assetspath + 'css/icons.min.css',
])
.pipe(concat('app.css'))
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile js from node modules
gulp.task('compile-js', function() {
return gulp.src([
nodepath + 'jquery/dist/jquery.min.js',
nodepath + 'slick-carousel/slick/slick.min.js',
nodepath + 'scrollreveal/dist/scrollreveal.min.js',
nodepath + 'waypoints/lib/jquery.waypoints.min.js',
nodepath + 'waypoints/lib/shortcuts/sticky.min.js',
nodepath + 'jquery.counterup/jquery.counterup.min.js',
nodepath + 'wallop/js/Wallop.min.js',
//Additional static js assets
assetspath + 'js/ggpopover/ggpopover.min.js',
assetspath + 'js/ggpopover/ggtooltip.js',
assetspath + 'js/embed/embed.js',
assetspath + 'js/gmap/gmap.min.js',
])
.pipe(concat('app.js'))
.pipe(gulp.dest('./_site/assets/js/'));
});
//Copy Theme js to production site
gulp.task('copy-js', function() {
gulp.src('js/**/*.js')
.pipe(gulp.dest('./_site/assets/js/'));
});
//Copy images to production site
gulp.task('copy-images', function() {
gulp.src('images/**/*')
.pipe(gulp.dest('./_site/assets/images/'));
});
gulp.task('init', ['setupBulma']);
gulp.task('build', ['clean','copy', 'compile-js', 'compile-css', 'copy-js', 'compile-sass', 'compile-scss', 'compile-html', 'copy-images']);
gulp.task('default', ['server', 'watch']);
Gulp 4.0 has changed the way that tasks should be defined if the task depends on another task to execute. The list parameter has been deprecated.
An example from your gulpfile.js would be:
// Starts a BrowerSync instance
gulp.task('server', ['build'], function(){
browser.init({server: './_site', port: port});
});
Instead of the list parameter they have introduced gulp.series() and gulp.parallel().
This task should be changed to something like this:
// Starts a BrowerSync instance
gulp.task('server', gulp.series('build', function(){
browser.init({server: './_site', port: port});
}));
I'm not an expert in this. You can see a more robust example in the gulp documentation for running tasks in series or these following excellent blog posts by Jhey Thompkins and Stefan Baumgartner
https://codeburst.io/switching-to-gulp-4-0-271ae63530c0
https://fettblog.eu/gulp-4-parallel-and-series/
Try replacing your last line of gulpfile.js
gulp.task('default', ['server', 'watch']);
with
gulp.task('default', gulp.series('server', 'watch'));
Lower your gulp version in package.json file to 3.9.1-
"gulp": "^3.9.1",
You don't need to downgrade your gulp from gulp 4. Use gulp.series() to combine multiple tasks. At first install gulp globally with
npm install --global gulp-cli
and then install locally on your working directory with
npm install --save-dev gulp
see details here
Example:
package.json
{
"name": "gulp-test",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"devDependencies": {
"browser-sync": "^2.26.3",
"gulp": "^4.0.0",
"gulp-sass": "^4.0.2"
},
"dependencies": {
"bootstrap": "^4.3.1",
"jquery": "^3.3.1",
"popper.js": "^1.14.7"
}
}
gulpfile.js
var gulp = require("gulp");
var sass = require('gulp-sass');
var browserSync = require('browser-sync').create();
// Specific Task
function js() {
return gulp
.src(['node_modules/bootstrap/dist/js/bootstrap.min.js', 'node_modules/jquery/dist/jquery.min.js', 'node_modules/popper.js/dist/umd/popper.min.js'])
.pipe(gulp.dest('src/js'))
.pipe(browserSync.stream());
}
gulp.task(js);
// Specific Task
function gulpSass() {
return gulp
.src(['src/scss/*.scss'])
.pipe(sass())
.pipe(gulp.dest('src/css'))
.pipe(browserSync.stream());
}
gulp.task(gulpSass);
// Run multiple tasks
gulp.task('start', gulp.series(js, gulpSass));
Run gulp start to fire multiple tasks & run gulp js or gulp gulpSass for specific task.
https://fettblog.eu/gulp-4-parallel-and-series/
Because
gulp.task(name, deps, func) was replaced by gulp.task(name, gulp.{series|parallel}(deps, func)).
You are using the latest version of gulp but older code. Modify the code or downgrade.
I get the same error when using Gulp. The solution is to switch to Gulp version 3.9.1, both for the local version and the CLI version.
sudo npm install -g gulp#3.9.1
Run in the project's folder
npm install gulp#3.9.1
The problem is that you are using gulp 4 and the syntax in gulfile.js is of gulp 3. So either downgrade your gulp to 3.x.x or make use of gulp 4 syntaxes.
Syntax Gulp 3:
gulp.task('default', ['sass'], function() {....} );
Syntax Gulp 4:
gulp.task('default', gulp.series(sass), function() {....} );
You can read more about gulp and gulp tasks on:
https://medium.com/#sudoanushil/how-to-write-gulp-tasks-ce1b1b7a7e81
Replace the array in:
gulp.task('default', ['task1', 'task2','task3']);
with gulp.series()
gulp.task('default', gulp.series('task1', 'task2','task3'));
It's not good to keep changing the gulp & npm versions in-order to fix the errors. I was getting several exceptions last days after reinstall my working machine. And wasted tons of minutes to re-install & fixing those.
So, I decided to upgrade all to latest versions:
npm -v : v12.13.0
node -v : 6.13.0
gulp -v : CLI version: 2.2.0 Local version: 4.0.2
This error is getting because of the how it has coded in you gulpfile but not the version mismatch.
So, Here you have to change 2 things in the gulpfile to aligned with Gulp version 4.
Gulp 4 has changed how initiate the task than Version 3.
In version 4, you have to defined the task as a function, before call it as a gulp task by it's string name. In V3:
gulp.task('serve', ['sass'], function() {..});
But in V4 it should be like:
function serve() {
...
}
gulp.task('serve', gulp.series(sass));
As #Arthur has mentioned, you need to change the way of passing arguments to the task function. It was like this in V3:
gulp.task('serve', ['sass'], function() {
...
});
But in V4, it should be:
gulp.task('serve', gulp.series(sass));
While migrating from Gulp 3.x to Gulp 4.x, these are the common errors we are getting:
Errors:
AssertionError [ERR_ASSERTION]: Task function must be specified
AssertionError [ERR_ASSERTION]: Task never defined:
The following tasks did not complete: Did you forget to signal async completion?
Here are few points to take care regarding task definition and execution:
First define task
Use return
Then execute with gulp.series()
Here, is the quick Gulp code which is working with Gulp v4:
// First define task with Return
gulp.task('css-minify', function () {
return gulp.src('assets/images/*.*')
.pipe(smushit({verbose: true}))
.pipe(gulp.dest('assets/images'));
});
// Then execute task with bracket '()' instead of '[]'
gulp.task('default', gulp.series('css-minify'));
Replacing [] with gulp.series() definitely worked to me, and another change I've needed to do was to move my main task 'Ex. gulp main-task' to the end of the Gulp file using Gulp v4.02
worked after updating gulp.task() with gulp.task( gulp.series() );
Steps:
"gulp": "^3.9.1",
npm install
gulp styles
I'm trying to run the command below but unfortunately I run into errors.
$ gulp build
In my terminal and I get this assertion error. I've uninstalled node and NPM and reinstalled again using brew - How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X) with these steps. My node version is v10.5.0 and npm version is 6.1.0.
My system is MacOS High Sierra 10.13.2
assert.js:269
throw err;
^
AssertionError [ERR_ASSERTION]: Task function must be specified
at Gulp.set [as _setTask] (bulkit/startup-kit/node_modules/undertaker/lib/set-task.js:10:3)
at Gulp.task (startup-kit/node_modules/undertaker/lib/task.js:13:8)
at Object.<anonymous>
at Module._compile (internal/modules/cjs/loader.js:702:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
at Module.load (internal/modules/cjs/loader.js:612:32)
at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
at Function.Module._load (internal/modules/cjs/loader.js:543:3)
at Module.require (internal/modules/cjs/loader.js:650:17)
at require (internal/modules/cjs/helpers.js:20:18)
package.json
{
"name": "bulkit-startup",
"version": "0.0.1",
"description": "Bulkit Startup Kit",
"main": "Gruntfile.js",
"devDependencies": {
"autoprefixer": "^6.3.6",
"browser-sync": "^2.24.5",
"gulp": "^4.0.0",
"gulp-clean": "^0.3.2",
"gulp-concat": "^2.6.0",
"gulp-postcss": "^6.1.0",
"gulp-sass": "^2.2.0",
"gulp-sourcemaps": "^1.6.0",
"jquery": "^3.3.1",
"mq4-hover-shim": "^0.3.0",
"panini": "^1.3.0",
"rimraf": "^2.5.2"
},
"engines": {
"node": ">=0.10.1"
},
"scripts": {
"start": "gulp",
"build": "gulp build"
},
"repository": {
"type": "git",
"url": "https://github.com/cssninjaStudio/bulkit.git"
},
"bugs": {
"url": "https://github.com/cssninjaStudio/bulkit/issues",
"email": "support#cssninja.io"
},
"author": "Css Ninja <hello#cssninja.io> (https://cssninja.io/themes/bulkit)",
"license": "Commercial",
"private": true,
"dependencies": {
"bulma": "^0.7.0",
"del": "^3.0.0",
"jquery-waypoints": "^2.0.5",
"jquery.counterup": "^2.1.0",
"scrollreveal": "^3.4.0",
"slick-carousel": "^1.8.1",
"wallop": "^2.4.1"
}
}
gulpfile.js
var gulp = require('gulp');
var clean = require('gulp-clean');
var sass = require('gulp-sass');
var sourcemaps = require('gulp-sourcemaps');
var postcss = require('gulp-postcss');
var autoprefixer = require('autoprefixer');
var mq4HoverShim = require('mq4-hover-shim');
var rimraf = require('rimraf').sync;
var browser = require('browser-sync');
var panini = require('panini');
var concat = require('gulp-concat');
var port = process.env.SERVER_PORT || 8080;
var nodepath = 'node_modules/';
var assetspath = 'assets/';
// Starts a BrowerSync instance
gulp.task('server', ['build'], function(){
browser.init({server: './_site', port: port});
});
// Watch files for changes
gulp.task('watch', function() {
gulp.watch('scss/**/*', ['compile-scss', browser.reload]);
gulp.watch('sass/**/*', ['compile-sass', browser.reload]);
gulp.watch('js/**/*', ['copy-js', browser.reload]);
gulp.watch('images/**/*', ['copy-images', browser.reload]);
gulp.watch('html/pages/**/*', ['compile-html']);
gulp.watch(['html/{layouts,includes,helpers,data}/**/*'], ['compile-html:reset','compile-html']);
gulp.watch(['./src/{layouts,partials,helpers,data}/**/*'], [panini.refresh]);
});
// Erases the dist folder
gulp.task('reset', function() {
rimraf('bulma/*');
rimraf('scss/*');
rimraf('assets/css/*');
rimraf('assets/fonts/*');
rimraf('images/*');
});
// Erases the dist folder
gulp.task('clean', function() {
rimraf('_site');
});
// Copy Bulma filed into Bulma development folder
gulp.task('setupBulma', function() {
//Get Bulma from node modules
gulp.src([nodepath + 'bulma/*.sass']).pipe(gulp.dest('bulma/'));
gulp.src([nodepath + 'bulma/**/*.sass']).pipe(gulp.dest('bulma/'));
});
// Copy static assets
gulp.task('copy', function() {
//Copy other external font and data assets
gulp.src(['assets/fonts/**/*']).pipe(gulp.dest('_site/assets/fonts/'));
gulp.src([nodepath + 'slick-carousel/slick/fonts/**/*']).pipe(gulp.dest('_site/assets/css/fonts/'));
gulp.src([nodepath + 'slick-carousel/slick/ajax-loader.gif']).pipe(gulp.dest('_site/assets/css/'));
});
//Theme Sass variables
var sassOptions = {
errLogToConsole: true,
outputStyle: 'compressed',
includePaths: [nodepath + 'bulma/sass']
};
//Theme Scss variables
var scssOptions = {
errLogToConsole: true,
outputStyle: 'compressed',
includePaths: ['./scss/partials']
};
// Compile Bulma Sass
gulp.task('compile-sass', function () {
var processors = [
mq4HoverShim.postprocessorFor({ hoverSelectorPrefix: '.is-true-hover ' }),
autoprefixer({
browsers: [
"Chrome >= 45",
"Firefox ESR",
"Edge >= 12",
"Explorer >= 10",
"iOS >= 9",
"Safari >= 9",
"Android >= 4.4",
"Opera >= 30"
]
})//,
//cssnano(),
];
//Watch me get Sassy
return gulp.src('./bulma/bulma.sass')
.pipe(sourcemaps.init())
.pipe(sass(sassOptions).on('error', sass.logError))
.pipe(postcss(processors))
.pipe(sourcemaps.write())
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile Theme Scss
gulp.task('compile-scss', function () {
var processors = [
mq4HoverShim.postprocessorFor({ hoverSelectorPrefix: '.is-true-hover ' }),
autoprefixer({
browsers: [
"Chrome >= 45",
"Firefox ESR",
"Edge >= 12",
"Explorer >= 10",
"iOS >= 9",
"Safari >= 9",
"Android >= 4.4",
"Opera >= 30"
]
})//,
//cssnano(),
];
//Watch me get Sassy
return gulp.src('./scss/core.scss')
.pipe(sourcemaps.init())
.pipe(sass(sassOptions).on('error', sass.logError))
.pipe(postcss(processors))
.pipe(sourcemaps.write())
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile Html
gulp.task('compile-html', function() {
gulp.src('html/pages/**/*.html')
.pipe(panini({
root: 'html/pages/',
layouts: 'html/layouts/',
partials: 'html/includes/',
helpers: 'html/helpers/',
data: 'html/data/'
}))
.pipe(gulp.dest('_site'))
.on('finish', browser.reload);
});
gulp.task('compile-html:reset', function(done) {
panini.refresh();
done();
});
// Compile css from node modules
gulp.task('compile-css', function() {
return gulp.src([
nodepath + 'slick-carousel/slick/slick.css',
nodepath + 'slick-carousel/slick/slick-theme.css',
nodepath + 'wallop/css/wallop.css',
//Additional static css assets
assetspath + 'css/icons.min.css',
])
.pipe(concat('app.css'))
.pipe(gulp.dest('./_site/assets/css/'));
});
// Compile js from node modules
gulp.task('compile-js', function() {
return gulp.src([
nodepath + 'jquery/dist/jquery.min.js',
nodepath + 'slick-carousel/slick/slick.min.js',
nodepath + 'scrollreveal/dist/scrollreveal.min.js',
nodepath + 'waypoints/lib/jquery.waypoints.min.js',
nodepath + 'waypoints/lib/shortcuts/sticky.min.js',
nodepath + 'jquery.counterup/jquery.counterup.min.js',
nodepath + 'wallop/js/Wallop.min.js',
//Additional static js assets
assetspath + 'js/ggpopover/ggpopover.min.js',
assetspath + 'js/ggpopover/ggtooltip.js',
assetspath + 'js/embed/embed.js',
assetspath + 'js/gmap/gmap.min.js',
])
.pipe(concat('app.js'))
.pipe(gulp.dest('./_site/assets/js/'));
});
//Copy Theme js to production site
gulp.task('copy-js', function() {
gulp.src('js/**/*.js')
.pipe(gulp.dest('./_site/assets/js/'));
});
//Copy images to production site
gulp.task('copy-images', function() {
gulp.src('images/**/*')
.pipe(gulp.dest('./_site/assets/images/'));
});
gulp.task('init', ['setupBulma']);
gulp.task('build', ['clean','copy', 'compile-js', 'compile-css', 'copy-js', 'compile-sass', 'compile-scss', 'compile-html', 'copy-images']);
gulp.task('default', ['server', 'watch']);
Gulp 4.0 has changed the way that tasks should be defined if the task depends on another task to execute. The list parameter has been deprecated.
An example from your gulpfile.js would be:
// Starts a BrowerSync instance
gulp.task('server', ['build'], function(){
browser.init({server: './_site', port: port});
});
Instead of the list parameter they have introduced gulp.series() and gulp.parallel().
This task should be changed to something like this:
// Starts a BrowerSync instance
gulp.task('server', gulp.series('build', function(){
browser.init({server: './_site', port: port});
}));
I'm not an expert in this. You can see a more robust example in the gulp documentation for running tasks in series or these following excellent blog posts by Jhey Thompkins and Stefan Baumgartner
https://codeburst.io/switching-to-gulp-4-0-271ae63530c0
https://fettblog.eu/gulp-4-parallel-and-series/
Try replacing your last line of gulpfile.js
gulp.task('default', ['server', 'watch']);
with
gulp.task('default', gulp.series('server', 'watch'));
Lower your gulp version in package.json file to 3.9.1-
"gulp": "^3.9.1",
You don't need to downgrade your gulp from gulp 4. Use gulp.series() to combine multiple tasks. At first install gulp globally with
npm install --global gulp-cli
and then install locally on your working directory with
npm install --save-dev gulp
see details here
Example:
package.json
{
"name": "gulp-test",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "ISC",
"devDependencies": {
"browser-sync": "^2.26.3",
"gulp": "^4.0.0",
"gulp-sass": "^4.0.2"
},
"dependencies": {
"bootstrap": "^4.3.1",
"jquery": "^3.3.1",
"popper.js": "^1.14.7"
}
}
gulpfile.js
var gulp = require("gulp");
var sass = require('gulp-sass');
var browserSync = require('browser-sync').create();
// Specific Task
function js() {
return gulp
.src(['node_modules/bootstrap/dist/js/bootstrap.min.js', 'node_modules/jquery/dist/jquery.min.js', 'node_modules/popper.js/dist/umd/popper.min.js'])
.pipe(gulp.dest('src/js'))
.pipe(browserSync.stream());
}
gulp.task(js);
// Specific Task
function gulpSass() {
return gulp
.src(['src/scss/*.scss'])
.pipe(sass())
.pipe(gulp.dest('src/css'))
.pipe(browserSync.stream());
}
gulp.task(gulpSass);
// Run multiple tasks
gulp.task('start', gulp.series(js, gulpSass));
Run gulp start to fire multiple tasks & run gulp js or gulp gulpSass for specific task.
https://fettblog.eu/gulp-4-parallel-and-series/
Because
gulp.task(name, deps, func) was replaced by gulp.task(name, gulp.{series|parallel}(deps, func)).
You are using the latest version of gulp but older code. Modify the code or downgrade.
I get the same error when using Gulp. The solution is to switch to Gulp version 3.9.1, both for the local version and the CLI version.
sudo npm install -g gulp#3.9.1
Run in the project's folder
npm install gulp#3.9.1
The problem is that you are using gulp 4 and the syntax in gulfile.js is of gulp 3. So either downgrade your gulp to 3.x.x or make use of gulp 4 syntaxes.
Syntax Gulp 3:
gulp.task('default', ['sass'], function() {....} );
Syntax Gulp 4:
gulp.task('default', gulp.series(sass), function() {....} );
You can read more about gulp and gulp tasks on:
https://medium.com/#sudoanushil/how-to-write-gulp-tasks-ce1b1b7a7e81
Replace the array in:
gulp.task('default', ['task1', 'task2','task3']);
with gulp.series()
gulp.task('default', gulp.series('task1', 'task2','task3'));
It's not good to keep changing the gulp & npm versions in-order to fix the errors. I was getting several exceptions last days after reinstall my working machine. And wasted tons of minutes to re-install & fixing those.
So, I decided to upgrade all to latest versions:
npm -v : v12.13.0
node -v : 6.13.0
gulp -v : CLI version: 2.2.0 Local version: 4.0.2
This error is getting because of the how it has coded in you gulpfile but not the version mismatch.
So, Here you have to change 2 things in the gulpfile to aligned with Gulp version 4.
Gulp 4 has changed how initiate the task than Version 3.
In version 4, you have to defined the task as a function, before call it as a gulp task by it's string name. In V3:
gulp.task('serve', ['sass'], function() {..});
But in V4 it should be like:
function serve() {
...
}
gulp.task('serve', gulp.series(sass));
As #Arthur has mentioned, you need to change the way of passing arguments to the task function. It was like this in V3:
gulp.task('serve', ['sass'], function() {
...
});
But in V4, it should be:
gulp.task('serve', gulp.series(sass));
While migrating from Gulp 3.x to Gulp 4.x, these are the common errors we are getting:
Errors:
AssertionError [ERR_ASSERTION]: Task function must be specified
AssertionError [ERR_ASSERTION]: Task never defined:
The following tasks did not complete: Did you forget to signal async completion?
Here are few points to take care regarding task definition and execution:
First define task
Use return
Then execute with gulp.series()
Here, is the quick Gulp code which is working with Gulp v4:
// First define task with Return
gulp.task('css-minify', function () {
return gulp.src('assets/images/*.*')
.pipe(smushit({verbose: true}))
.pipe(gulp.dest('assets/images'));
});
// Then execute task with bracket '()' instead of '[]'
gulp.task('default', gulp.series('css-minify'));
Replacing [] with gulp.series() definitely worked to me, and another change I've needed to do was to move my main task 'Ex. gulp main-task' to the end of the Gulp file using Gulp v4.02
worked after updating gulp.task() with gulp.task( gulp.series() );
Steps:
"gulp": "^3.9.1",
npm install
gulp styles
Hi I am working with the web starter kit angular version and am having real issues compiling the code without errors. The main problematic task is the scripts one which keeps giving me random missing modules and uglify/parse problem.
events.js:85
throw er; // Unhandled 'error' event
^
Error
at new JS_Parse_Error (C:\Users\Jensten\webkit\node_modules\gulp
-uglify\node_modules\uglify-js\lib\parse.js:196:18)
at js_error (C:\Users\Jensten\webkit\node_modules\gulp-uglify\no
de_modules\uglify-js\lib\parse.js:204:11)
at croak (C:\Users\Jensten\webkit\node_modules\gulp-uglify\node_
modules\uglify-js\lib\parse.js:679:41)
at token_error (C:\Users\Jensten\webkit\node_modules\gulp-uglify
\node_modules\uglify-js\lib\parse.js:683:9)
at expect_token (C:\Users\Jensten\webkit\node_modules\gulp-uglif
y\node_modules\uglify-js\lib\parse.js:696:9)
at expect (C:\Users\Jensten\webkit\node_modules\gulp-uglify\node
_modules\uglify-js\lib\parse.js:699:36)
at expr_list (C:\Users\Jensten\webkit\node_modules\gulp-uglify\n
ode_modules\uglify-js\lib\parse.js:1202:44)
at C:\Users\Jensten\webkit\node_modules\gulp-uglify\node_modules
\uglify-js\lib\parse.js:1217:23
at C:\Users\Jensten\webkit\node_modules\gulp-uglify\node_modules
\uglify-js\lib\parse.js:722:24
at expr_atom (C:\Users\Jensten\webkit\node_modules\gulp-uglify\n
ode_modules\uglify-js\lib\parse.js:1180:35)
C:\Users\Jensten\webkit\>gulp html
[16:47:01] Using gulpfile ~\pokerstars-webkit\gulpfile.js
[16:47:01] Starting 'html'...
[16:47:02] 'html' errored after 1.54 s
[16:47:02] TypeError: undefined is not a function
at Gulp.<anonymous> (C:\Users\Jensten\webkit\gulpfile.js:130:18)
at module.exports (C:\Users\Jensten\webkit\node_modules\gulp\nod
e_modules\orchestrator\lib\runTask.js:34:7)
at Gulp.Orchestrator._runTask (C:\Users\Jensten\webkit\node_modu
les\gulp\node_modules\orchestrator\index.js:273:3)
at Gulp.Orchestrator._runStep (C:\Users\Jensten\webkit\node_modu
les\gulp\node_modules\orchestrator\index.js:214:10)
at Gulp.Orchestrator.start (C:\Users\Jensten\webkit\node_modules
\gulp\node_modules\orchestrator\index.js:134:8)
at c:\Users\Coutolil\AppData\Roaming\npm\node_modules\gulp\bin\gulp.js:129:2
0
at process._tickCallback (node.js:355:11)
at Function.Module.runMain (module.js:503:11)
at startup (node.js:129:16)
at node.js:814:3
My gulp.js file contains the following:
/**
*
* Web Starter Kit
* Copyright 2014 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*
*/
'use strict';
// Include Gulp & Tools We'll Use
var gulp = require('gulp');
var $ = require('gulp-load-plugins')();
var del = require('del');
var runSequence = require('run-sequence');
var browserSync = require('browser-sync');
var pagespeed = require('psi');
var reload = browserSync.reload;
var AUTOPREFIXER_BROWSERS = [
'ie >= 10',
'ie_mob >= 10',
'ff >= 30',
'chrome >= 34',
'safari >= 7',
'opera >= 23',
'ios >= 7',
'android >= 4.0',
'bb >= 10'
];
// Lint JavaScript
gulp.task('jshint', function() {
return gulp.src('app/scripts/**/*.js')
.pipe(reload({stream: true, once: true}))
.pipe($.jshint())
.pipe($.jshint.reporter('jshint-stylish'))
.pipe($.if(!browserSync.active, $.jshint.reporter('fail')));
});
// Optimize Images
gulp.task('images', function() {
return gulp.src('app/assets/images/**/*')
.pipe($.cache($.imagemin({
progressive: true,
interlaced: true
})))
.pipe(gulp.dest('dist/assets/images'))
.pipe($.size({title: 'images'}));
});
// Copy All Files At The Root Level (app)
gulp.task('copy', function() {
return gulp.src(['app/*', '!app/*.html', '!app/scss', '!app/scripts'], {dot: true})
.pipe(gulp.dest('dist'))
.pipe($.size({title: 'copy'}));
});
// Copy Web Fonts To Dist
gulp.task('fonts', function() {
return gulp.src(['app/assets/fonts/**'])
.pipe(gulp.dest('dist/assets/fonts'))
.pipe($.size({title: 'fonts'}));
});
// Automatically Prefix CSS
gulp.task('styles:css', function() {
return gulp.src('app/styles/css/**/*.css')
.pipe($.changed('app/styles'))
.pipe($.autoprefixer(AUTOPREFIXER_BROWSERS))
.pipe(gulp.dest('app/styles'))
.pipe($.size({title: 'styles:css'}));
});
// Compile Sass For Style Guide Components (app/styles/components)
gulp.task('styles:scss', function() {
var path = require('path');
return gulp.src('app/scss/app.scss')
.pipe($.sass({
style: 'expanded',
precision: 10,
loadPath: ['app/scss']
}))
.on('error', console.error.bind(console))
.pipe($.autoprefixer(AUTOPREFIXER_BROWSERS))
.pipe(gulp.dest('app/assets/styles'))
.pipe(reload({stream:true}))
.pipe($.size({title: 'styles:scss'}));
});
//Watch sass
//---end Watch sass
// Output Final CSS Styles
gulp.task('styles', ['styles:scss', 'styles:css']);
// Scan Your HTML For Assets & Optimize Them
gulp.task('html', function() {
return gulp.src('app/**/*.html')
.pipe($.useref.assets({searchPath: '{.tmp,app}'}))
// Concatenate And Minify JavaScript
.pipe($.if('*.js', $.uglify({preserveComments: 'some'})))
// Remove Any Unused CSS
// commented for now as it doesn't work well with angular (ng-class for example)
/*.pipe($.if('*.css', $.uncss({
html: [
'app/index.html'
],
// CSS Selectors for UnCSS to ignore
ignore: [
'.navdrawer-container.open',
/.app-bar.open/
]
})))*/
// Concatenate And Minify Styles
.pipe($.if('*.css', $.csso()))
.pipe($.useref.restore())
.pipe($.useref())
// Update Production Style Guide Paths
.pipe($.replace('components/components.css', 'components/main.min.css'))
// Minify Any HTML
.pipe($.if('*.html', $.minifyHtml({empty: true})))
// Output Files
.pipe(gulp.dest('dist'))
.pipe($.size({title: 'html'}));
});
gulp.task('scripts', function() {
return gulp.src('app/scripts/**/*.js')
.pipe($.if('*.js', $.uglify({preserveComments: 'some'})))
.pipe($.sourcemaps.init())
.pipe($.concat('app.js'))
.pipe($.sourcemaps.write('./'))
.pipe(gulp.dest('app/assets/scripts'));
});
gulp.task('vendor', function() {
var mainBowerFiles = require('main-bower-files');
return gulp.src(mainBowerFiles(/* options */))
.pipe($.if('*.js', $.uglify({preserveComments: 'some'})))
.pipe($.sourcemaps.init())
.pipe($.concat('vendor.js'))
.pipe($.sourcemaps.write('./'))
.pipe(gulp.dest('app/assets/scripts'));
})
// Clean Output Directory
gulp.task('clean', del.bind(null, ['.tmp', 'dist']));
// Watch Files For Changes & Reload
gulp.task('serve', function() {
browserSync({
open: false,
notify: true,
server: {
baseDir: ['.tmp', 'app']
}
});
gulp.watch(['app/**/*.html'], reload);
gulp.watch(['app/scss/**/*.scss'], ['styles:scss']);
// gulp.watch(['{.tmp,app}/assets/styles/**/*.css'], ['styles:css']);
gulp.watch(['app/scripts/**/*.js'], [/*'jshint',*/ 'scripts', reload]);
gulp.watch(['app/assets/images/**/*'], reload);
});
// Build and serve the output from the dist build
gulp.task('serve:dist', ['default'], function() {
browserSync({
open: false,
notify: true,
server: {
baseDir: 'dist'
}
});
});
// Build Production Files, the Default Task
gulp.task('default', ['clean'], function(cb) {
runSequence('styles', 'vendor', 'scripts', ['jshint', 'html', 'images', 'fonts', 'copy'], cb);
});
// Run PageSpeed Insights
// Update `url` below to the public URL for your site
gulp.task('pagespeed', pagespeed.bind(null, {
// By default, we use the PageSpeed Insights
// free (no API key) tier. You can use a Google
// Developer API key if you have one. See
// http://goo.gl/RkN0vE for info key: 'YOUR_API_KEY'
url: 'https://example.com',
strategy: 'mobile'
}));
// Load custom tasks from the `tasks` directory
try {
require('require-dir')('tasks');
} catch(err) {
}
I am happy to use a different file, all I want is to make sure that: Angular, SASS, compression, and file output to the assets directory are working. I am currently able to run the project but the default task obviously does not run on gulp serve, hence why I was unable to see any errors before.
Could anyone point me in the right direction?
I had the same problem just now,then i realized that I haven't added the relative Plug-in to gulp. After I add it,then it's solved!
maybe this is the solution.
Place your devDependencies at correct place in package.json file as shown below
{
"name": "my-project",
"private": true,
"devDependencies": {
//dependencies are place here
},
"engines": {
"node": ">=0.10.0"
}
}
I'm experiencing strange behaviour using this Gulp configuration to minify my SASS files generating sourcemaps.
'use strict';
var PATH = {
SRC_DIR: 'src/',
SRC: {
IMG: 'img/',
INDEX: 'index.html',
JS: {
DIR: 'js/',
FILE: [
'app.js',
'**/*.js',
'controller/**/*.js',
'factory/**/*.js',
'directive/**/*.js',
'model/**/*.js'
]
},
SASS: 'sass/',
TEMPLATE: 'template/'
},
DEST_DIR: 'dist/',
DEST: {
CSS: {
DIR: 'css/',
FILE: 'full.css'
},
IMG: 'img/',
JS: {
DIR: 'js/',
FILE: 'full.js'
},
LIB: 'lib/',
TEMPLATE: 'template/',
}
};
var gulp = require('gulp'),
autoprefixer = require('gulp-autoprefixer'),
concat = require('gulp-concat'),
minifyCss = require('gulp-minify-css'),
rename = require('gulp-rename'),
sass = require('gulp-ruby-sass'),
sourcemaps = require('gulp-sourcemaps');
gulp.task('styles', function() {
return sass(PATH.SRC_DIR + PATH.SRC.SASS, {
sourcemap: true,
style: 'expanded'
})
.pipe(autoprefixer({
browsers: ['last 2 version', 'safari 5', 'ie 8', 'ie 9'],
cascade: true
}))
.pipe(concat(PATH.DEST.CSS.FILE))
.pipe(gulp.dest(PATH.DEST_DIR + PATH.DEST.CSS.DIR))
.pipe(rename({suffix: '.min'}))
.pipe(minifyCss())
.pipe(sourcemaps.write())
.pipe(gulp.dest(PATH.DEST_DIR + PATH.DEST.CSS.DIR));
});
gulp.task('watch', function() {
gulp.watch(PATH.SRC_DIR + PATH.SRC.SASS + '**/*.scss', ['styles']);
});
gulp.task('default', ['watch', 'styles']);
The first time I run this script using gulp it'll generate a correct full.min.css and it waits for changes in the SASS directory.
When you change something inside SASS files it'll trigger the watch and re-run the styles task, which will build a full.min.css.
You see the changes in the front-end but this minified file becomes bigger and bigger at every rebuild.
If I omit the sourcemaps inside styles task it seems to work fine.
The full.css file is always ok.
What am I missing here? Why the minified version keeps increasing its dimension?