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']);
Try replacing your last line of gulpfile.js
with
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:
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.
But in V4 it should be like:
But in V4, it should be:
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.
Run in the project's folder
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:
Instead of the list parameter they have introduced
gulp.series()
andgulp.parallel()
.This task should be changed to something like this:
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/
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
gulpfile.js
Run
gulp start
to fire multiple tasks & rungulp js
orgulp gulpSass
for specific task.https://fettblog.eu/gulp-4-parallel-and-series/
Because
gulp.task(name, deps, func)
was replaced bygulp.task(name, gulp.{series|parallel}(deps, func))
.You are using the latest version of gulp but older code. Modify the code or downgrade.