Gulp stops watching - web

I'm using gulp to watch certain files and run certain tasks however after the first few runs it seems to stop watching. If I save html files in the pages directory, after the first two to five updates, the templates task seems to stop running. I've included my gulpfile below.
// Include gulp
var gulp = require('gulp');
// Include plugins
var jshint = require('gulp-jshint');
var sass = require('gulp-sass');
var notify = require('gulp-notify')
var htmlv = require('gulp-html-validator')
var swig = require('gulp-swig');
var plumber = require('gulp-plumber');
// Linting
gulp.task('lint', function() {
return gulp.src('js/*.js')
.pipe(jshint())
.pipe(jshint.reporter('default'));
});
gulp.task('sass', function() {
return gulp.src('./resources/scss/*.scss')
.pipe(sass()
.on('error', notify.onError(function(error) {
return 'Error: ' + error.message;
}))
)
.pipe(gulp.dest('./css'));
});
gulp.task('validate', function() {
return gulp.src('./**.html')
.pipe(htmlv({format: 'xhtml'}))
.pipe(gulp.dest('./validation_out'));
});
gulp.task('watch', function() {
gulp.watch('js/*.js', ['lint']);
gulp.watch('./resources/scss/*.scss', ['sass']);
gulp.watch('./pages/*.html', ['templates']);
});
gulp.task('templates', function() {
return gulp.src('./pages/*.html')
.pipe(swig({
load_json: true,
defaults: {
cache: false
}
}
))
.pipe(gulp.dest('.'));
});
gulp.task('default', ['lint', 'sass', 'templates', 'watch']);

Related

Gulp 4.0 version problem - parallel is not a function

I need help with my gulp project. Drops me error in terminal: TypeError: parallel is not a function Already searched information whole internet. Answer is to update Gulp version to 4.0.. Already updated. still shows the "parallel function" issue
My file:
const { src, dest, parallel, series, watch } = import('gulp');
const twig = import('gulp-twig');
const sass = import('gulp-sass');
const prefix = import('gulp-autoprefixer');
const data = import('gulp-data');
const sourcemaps = import('gulp-sourcemaps');
const concat = import('gulp-concat');
const plumber = import('gulp-plumber');
const browsersync = import('browser-sync');
const gulpcopy = import('gulp-copy');
const fs = import('fs');
const del = import('del');
const path = import('path');
var paths = {
build: {
html: 'dist/',
js: 'dist/assets/js/',
css: 'dist/assets/css/',
img: 'dist/assets/img/',
fonts: 'dist/assets/fonts/',
icons: 'dist/assets/icons/',
json: 'dist/assets/'
},
src: {
html: 'src/*.{htm,html,php}',
js: 'src/assets/js/*.js',
css: 'src/assets/sass/style.scss',
img: 'src/assets/img/**/*.*',
fonts: 'src/assets/fonts/**/*.*',
icons: 'src/assets/icons/**/*.*',
json: 'src/assets/*.json'
},
watch: {
html: 'src/**/*.{htm,html,php}',
js: 'src/assets/js/**/*.js',
css: 'src/assets/sass/**/*.scss',
img: 'src/assets/img/**/*.*',
fonts: 'src/assets/fonts/**/*.*',
icons: 'src/assets/icons/**/*.*',
json: 'src/assets/*.json'
},
clean: './dist'
};
// SCSS bundled into CSS task
function css() {
return src('client/scss/vendors/*.scss')
.pipe(sourcemaps.init())
// Stay live and reload on error
.pipe(plumber({
handleError: function (err) {
console.log(err);
this.emit('end');
}
}))
.pipe(sass({
includePaths: [paths.src.css + 'vendors/'],
outputStyle: 'compressed'
}).on('error', function (err) {
console.log(err.message);
// sass.logError
this.emit('end');
}))
.pipe(prefix(['last 15 versions','> 1%','ie 8','ie 7','iOS >= 9','Safari >= 9','Android >= 4.4','Opera >= 30'], {
cascade: true
}))
//.pipe(minifyCSS())
.pipe(concat('bootstrap.min.css'))
.pipe(sourcemaps.write('.'))
.pipe(dest('build/assets/css'));
}
// JS bundled into min.js task
function js() {
return src('dist/js/*.js')
.pipe(sourcemaps.init())
.pipe(concat('scripts.min.js'))
.pipe(sourcemaps.write('.'))
.pipe(dest('build/assets/js'));
}
function twigTpl () {
return src(['./dist/templates/*.twig'])
// Stay live and reload on error
.pipe(plumber({
handleError: function (err) {
console.log(err);
this.emit('end');
}
}))
// Load template pages json data
.pipe(data(function (file) {
return JSON.parse(fs.readFileSync(paths.data + path.basename(file.path) + '.json'));
}).on('error', function (err) {
process.stderr.write(err.message + '\n');
this.emit('end');
})
)
// Load default json data
.pipe(data(function () {
return JSON.parse(fs.readFileSync(paths.data + path.basename('default.twig.json')));
}).on('error', function (err) {
process.stderr.write(err.message + '\n');
this.emit('end');
})
)
// Twig compiled
.pipe(twig()
.on('error', function (err) {
process.stderr.write(err.message + '\n');
this.emit('end');
})
)
.pipe(dest(paths.build));
}
function copyAssets() {
// Copy assets
return src(['./dist/assets/**/*.*','!./dist/assets/**/*.psd','!./dist/assets/**/*.*.map'],
del(paths.build + 'assets/**/*')
)
.pipe(gulpcopy(paths.build + 'assets', { prefix: 2 }));
}
// BrowserSync
function browserSync() {
browsersync({
server: {
baseDir: paths.build
},
notify: false,
browser: "google chrome",
// proxy: "0.0.0.0:5000"
});
}
// BrowserSync reload
function browserReload () {
return browsersync.reload;
}
// Watch files
function watchFiles() {
// Watch SCSS changes
watch(paths.scss + '**/*.scss', parallel(css))
.on('change', browserReload());
// Watch javascripts changes
watch(paths.js + '*.js', parallel(js))
.on('change', browserReload());
// Watch template changes
watch(['dist/templates/**/*.twig','dist/data/*.twig.json'], parallel(twigTpl))
.on('change', browserReload());
// Assets Watch and copy to build in some file changes
watch('dist/assets/**/*')
.on('change', series(copyAssets, css, css_vendors, js, browserReload()));
}
const watching = parallel(watchFiles, browserSync);
exports.js = js;
exports.css = css;
exports.default = parallel(copyAssets, css, js, twigTpl);
exports.watch = watching;
My gulp version:
"node": "18.12.1"
"gulp": "^4.0.2",
On terminal when i write gulp -v it shows:
CLI version: 2.3.0
Local version: 4.0.2
Expecting professional help
Since your gulpfile is a CommonJS module, use require instead of import:
const { src, dest, parallel, series, watch } = require('gulp');
const twig = require('gulp-twig');
const sass = require('gulp-sass');
const prefix = require('gulp-autoprefixer');
const data = require('gulp-data');
const sourcemaps = require('gulp-sourcemaps');
const concat = require('gulp-concat');
const plumber = require('gulp-plumber');
const browsersync = require('browser-sync');
const gulpcopy = require('gulp-copy');
const fs = require('fs');
const del = require('del');
const path = require('path');
Using an ESM style gulpfile is also an option, but it's not as simple as just replacing require with import (btw the syntax is import sass from 'gulp-sass';...), you will also need to rename the file to "gulpfile.mjs", change the style of your exports, and probably more.

gulp-watch runs all tasks if it watches html files

There is a task 'serve' with watch functions as shown below:
gulp.task('serve', function() {
gulp.watch(['source/scripts/*.js'], ['concatjs', reload]);
gulp.watch(['source/styles/*.css'], ['concatcss', reload]);
gulp.watch(['app/static/*.html'], [reload]);
});
When I update js or css files gulp executes only concatjs or concatcss tasks correspondingly. But if to update the html file gulp executes all tasks even the tasks that wasn't registered to the watch function and it throws an error:
[18:26:31] Starting 'lesstocss'...
[18:26:31] Starting 'concatjs'...
[18:26:31] Starting 'concatcss'...
[18:26:31] Starting 'serve'...
[error] You tried to start Browsersync twice! To create multiple instances, use browserSync.create().init()
[18:26:31] Finished 'serve' after 6.1 ms
[18:26:31] Finished 'lesstocss' after 38 ms
[18:26:31] Finished 'concatjs' after 47 ms
[18:26:31] Finished 'concatcss' after 41 ms
Maybe gulp works with the html files in another way? All code I use:
var gulp = require('gulp');
var concat = require('gulp-concat');
var browserSync = require('browser-sync');
var reload = browserSync.reload;
var less = require('gulp-less');
var sourcemaps = require('gulp-sourcemaps');
gulp.task('lesstocss', function () {
return gulp.src('source/styles/*.less')
.pipe(sourcemaps.init())
.pipe(less())
.pipe(sourcemaps.write())
.pipe(gulp.dest('source/styles/'));
});
gulp.task('concatjs', function() {
return gulp.src(['source/scripts/mls.js', 'source/scripts/main.js'])
.pipe(concat('result.js'))
.pipe(gulp.dest('app/static/scripts/'));
});
gulp.task('concatcss', function() {
return gulp.src(['source/styles/mls.css', 'source/styles/main.css'])
.pipe(concat('result.css'))
.pipe(gulp.dest('app/static/styles/'));
})
gulp.task('serve', function() {
browserSync.init({
proxy: "localhost:3000",
browser: "google chrome",
notify: false,
open: 'local'
});
gulp.watch(['source/scripts/*.js'], ['concatjs', reload]);
gulp.watch(['source/styles/*.css'], ['concatcss', reload]);
gulp.watch(['app/static/*.html'], [reload]);
});
var gulp = require("gulp");
var changedInPlace = require("gulp-changed-in-place");
var browserSync = require("browser-sync").create();
var sass = require("gulp-sass");
var uglify = require("gulp-uglify");
var concat = require("gulp-concat");
var rename = require("gulp-rename");
var autoprefixer = require("gulp-autoprefixer");
var cleanCSS = require("gulp-clean-css");
// var sourcemaps = require("gulp-sourcemaps");
// var runSequence = require("run-sequence");
// Static Server + watching scss/html files
gulp.task("browsersync", ["sass"], function() {
browserSync.init({
server: {
baseDir: "./",
index: "home.html"
},
ghostMode: false
});
gulp.watch("./scss/*.scss", ["sass"]);
gulp.watch("./*.html").on("change", browserSync.reload);
gulp.watch("./js/*.js").on("change", browserSync.reload);
});
// Compile sass into CSS & auto-inject into browsers
gulp.task("sass", function() {
return gulp.src("./scss/*.scss")
.pipe(changedInPlace())
.pipe(sass().on("error", sass.logError))
.pipe(gulp.dest("./css"))
.pipe(browserSync.stream());
});
At this point I thought it would be instructive to show my working gulpfile.js. It uses sass but you can swap that. Note it uses the preferred
var browserSync = require("browser-sync").create();
and avoids the unusual and possibly problematic arrays you have in your watch statements. But if you really have 2 'serve' tasks defined that is probably your problem (see my comment below)
I am not sure the following line is valid syntax:
gulp.watch(['app/static/*.html'], [reload]);
gulp.watch(glob[, opts], tasks) : when used this way - as you are doing - tasks is an array of STRINGS which themselves are created by gulp.task(). See the docs
Names of task(s) to run when a file changes, added with gulp.task()
from https://github.com/gulpjs/gulp/blob/master/docs/API.md#gulpwatchglob--opts-tasks-or-gulpwatchglob--opts-cb
We definitely need to see reload and the rest of your gulpfile.js
Here is sample code which works with browserSync reload for example:
gulp.watch("./scss/*.scss", ["scss-watch"]);
gulp.watch("./*.html").on("change", browserSync.reload);
// gulp.watch("./css/*.css").on("change", browserSync.reload);
gulp.watch("./js/*.js").on("change", browserSync.reload);

Gulp/ Node - Errors on SASS Compile

I currently am using Gulp to run various tasks, which includes compiling and minifying SASS (I am also utilizing Gulp Watch). I am having the issue where when I make changes to a file (specifically app.scss), It spits out a rather uninformative error:
"C:\Program Files (x86)\JetBrains\PhpStorm 2016.1\bin\runnerw.exe" "C:\Program Files\nodejs\node.exe" C:\Users\Matthew\PhpstormProjects\mattrick\node_modules\gulp\bin\gulp.js --color --gulpfile c:\Users\Matthew\PhpstormProjects\website\gulpfile.js watch
[20:48:35] Using gulpfile c:\Users\Matthew\PhpstormProjects\website\gulpfile.js
[20:48:35] Starting 'watch'...
[20:48:35] Finished 'watch' after 7.94 ms
events.js:85
throw er; // Unhandled 'error' event
^
Error: ENOENT, stat 'c:\Users\Matthew\PhpstormProjects\website\resources\assets\sass\app.scss___jb_tmp___'
at Error (native)
Process finished with exit code 1
I'm really not sure what is causing this error, and from Googling, it appears to happen in many different circumstances. I'm not too sure what I am doing wrong. My gulpfile is below:
var gulp = require('gulp');
var watch = require('gulp-watch');
var batch = require('gulp-batch');
var sass = require('gulp-sass');
var concat = require('gulp-concat');
var uglify = require('gulp-uglify');
var cleanCSS = require('gulp-clean-css');
var plumber = require('gulp-plumber');
var del = require('del');
var config = {
bowerDir: './bower_components/',
publicDir: './public',
};
//Build Tasks
gulp.task('build', ['clean'], function() {
gulp.start(['css', 'fonts', 'js']);
});
//Clean Dir
gulp.task('clean', function() {
return del([config.publicDir + "/css", config.publicDir + "/fonts", config.publicDir + "/js"]);
});
//CSS Concat + Minification
gulp.task('css', function() {
return gulp.src(
[
config.bowerDir + 'bootstrap-sass/assets/stylesheets',
config.bowerDir + 'fontawesome/scss',
'./resources/assets/sass/app.scss'
])
.pipe(plumber())
.pipe(sass({
errLogToConsole: true
}))
.pipe(cleanCSS({compatibility: 'ie8'}))
.pipe(gulp.dest(config.publicDir + '/css'));
});
//Font Awesome
gulp.task('fonts', function() {
return gulp.src(config.bowerDir + '/fontawesome/fonts/**.*')
.pipe(plumber())
.pipe(gulp.dest(config.publicDir + '/fonts'));
});
//JavaScript Concat + Uglify
gulp.task('js', function() {
return gulp.src(
[
config.bowerDir + '/jquery/dist/jquery.min.js',
config.bowerDir + '/bootstrap-sass/assets/javascripts/bootstrap.min.js'
])
.pipe(plumber())
.pipe(concat('app.js'))
.pipe(uglify())
.pipe(gulp.dest(config.publicDir + "/js"));
});
//Watch Task
gulp.task('watch', function() {
watch(['./resources/assets/sass/*', config.bowerDir + '/bootstrap-sass/assets/stylesheets/**'], batch(function(events, done) {
gulp.start('build', done);
}));
});
//Default Task
gulp.task('default', ['build']);
I would really appreciate any help you could provide. Thank you!
The __jb_tmp__ suffix signifies a temp file created by JetBrains applications like PhpStorm. When saving a file the file contents are first written to a temp file which is then renamed. By the time gulp.watch() tries to stat() the temp file it's already gone.
Try limiting your gulp.watch() glob from:
watch(['./resources/assets/sass/*',
to only SASS/SCSS files:
watch(['./resources/assets/sass/*.{sass,scss}',

Using gulp-watch with babel.js

Below is a Gulp ES6 transpilation task. It works fine, but I'm trying to replace gulp.watch with the gulp-watch plugin so new files will be caught. The problem is that gulp-watch isn't giving me what gulp.watch does in the callback, and I'm not sure what to do about it.
Here's my original working task:
var gulp = require('gulp'),
rename = require('gulp-rename'),
plumber = require('gulp-plumber'),
gprint = require('gulp-print'),
notify = require('gulp-notify'),
babel = require('gulp-babel');
gulp.task('default', function() {
return gulp.watch('../**/**-es6.js', function(obj){
if (obj.type === 'changed') {
gulp.src(obj.path, { base: './' })
.pipe(plumber({
errorHandler: function (error) { /* elided */ }
}))
.pipe(babel())
.pipe(rename(function (path) {
path.basename = path.basename.replace(/-es6$/, '');
}))
.pipe(gulp.dest(''))
.pipe(gprint(function(filePath){ return "File processed: " + filePath; }));
}
});
});
And here's all that I have so far with gulp-watch:
var gulp = require('gulp'),
rename = require('gulp-rename'),
plumber = require('gulp-plumber'),
gprint = require('gulp-print'),
notify = require('gulp-notify'),
babel = require('gulp-babel'),
gWatch = require('gulp-watch');
gulp.task('default', function() {
return gWatch('../**/**-es6.js', function(obj){
console.log('watch event - ', Object.keys(obj).join(','));
console.log('watch event - ', obj.event);
console.log('watch event - ', obj.base);
return;
if (obj.type === 'changed') {
gulp.src(obj.path, { base: './' })
.pipe(plumber({
errorHandler: function (error) { /* elided */ }
}))
.pipe(babel())
.pipe(rename(function (path) {
path.basename = path.basename.replace(/-es6$/, '');
}))
.pipe(gulp.dest(''))
.pipe(gprint(function(filePath){ return "File processed: " + filePath; }));
}
});
});
The output of the logging is this:
watch event - history,cwd,base,stat,_contents,event
watch event - change
watch event - ..
How do I get gulp-watch to give me the info I had before, or, how can I change my task's code to get this working again with gulp-watch?
According to the tests, obj.relative should contain the relative filename, and obj.path will still hold the absolute file path, just as it did in your original code. Also, the callback accepts a Vinyl object, which is documented here: https://github.com/wearefractal/vinyl
You probably can't see them in your logs since Object.keys doesn't enumerate properties in the prototype chain.
Using a for..in loop, you should be able to see all the properties.

Gulp stream error on Uglify

I am writing a gulp script for the first time and I am having hard time being able to uglify my JS files based on gulp-if, I actually do think my code is correct :
var gulp = require('gulp');
var gutil = require('gulp-util');
var gulpif = require('gulp-if');
var concat = require('gulp-concat');
var del = require('del');
var uglify = require('gulp-uglify');
var sourcemaps = require('gulp-sourcemaps');
var minifyCSS = require('gulp-minify-css');
var watch = require("gulp-watch");
var argv = require('yargs').argv;
var paths = {
styles: ['css/maaap.css'],
stylesUfe: ['css/ufe.css'],
scripts: ['js/lang.js', 'js/bootstrap.js', 'js/jquery.js', 'js/leaflet.js', 'js/emm.js', 'js/markercluster.js', 'js/moment.js', 'js/geolocate.js'],
scriptsUfe: ['js/ufe.js', 'js/exif.js', 'js/binaryajax.js', 'js/canvasResize.js']
};
// Not all tasks need to use streams
// A gulpfile is just another node program and you can use all packages available on npm
gulp.task('clean', function(cb) {
console.log(cb);
del(['build'], cb);
});
// Merge all the css files from paths.styles then move it to build/css/style.css
// If you append --ufe you also merge the files from paths.stylesUfe
// If you append --prod your file become build/css/style.min.css and is compressed
gulp.task('styles', ['clean'], function() {
var source = (!argv.ufe) ? paths.styles : paths.styles.concat(paths.stylesUfe);
return gulp.src(source)
.pipe(concat('style.min.css'))
.pipe(gulpif(argv.prod, minifyCSS()))
.pipe(gulp.dest('build/css'));
});
// Merge all the css js files from paths.scripts then move it to build/js/livemap.js
// If you append --ufe you also merge the files from paths.scriptsUfe
// If you append --prof your file become build/js/livemap.min.js and is compressed
gulp.task('scripts', function() {
var source = (!argv.ufe) ? paths.scripts : paths.scripts.concat(paths.scriptsUfe);
return gulp.src(source)
.pipe(concat('livemap.min.js'))
.pipe(gulpif(argv.prod, uglify()))
.pipe(gulp.dest('build/js'))
});
gulp.task('watch', function() {
watch({glob: 'js/**/*.js'}, function (files) {
gulp.start('scripts'); // run the compile task
});
watch({glob: 'css/*.css'}, function (files) {
gulp.start('styles'); // run the compile task
});
});
// The default task (called when you run `gulp` from cli)
gulp.task('default', ['scripts', 'styles']);
The error logs I got in my console are very strange to me :
stream.js:94
throw er; // Unhandled stream error in pipe.
^
Error
at new JS_Parse_Error (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:189:18)
at js_error (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:197:11)
at croak (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:656:9)
at token_error (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:664:9)
at unexpected (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:670:9)
at expr_atom (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1154:13)
at maybe_unary (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1327:19)
at expr_op (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1349:33)
at expr_ops (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1362:16)
at maybe_conditional (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1367:20)
at maybe_assign (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1391:20)
at expression (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1410:20)
at expr_list (/home/soueuls/Projects/MAAAP/node_modules/gulp-uglify/node_modules/uglify-js/lib/parse.js:1177:24)
Any ideas ?

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