Tip submitted by @deepu105
To have LESS compilation with Grunt first install the "grunt-contrib-less" plugin by running npm install grunt-contrib-less --save-dev and then add the below in the files generated by JHipster.
Add the less config at the end under the watch task in grunt.initConfig
grunt.initConfig({
watch: {
less:{
// if any .less file changes in directory "src/main/less/" run the "less"-task.
// change folders to watch accordingly
files: ["src/main/less/*.less", "src/main/webapp/bower_components/bootstrap/less/*.less"],
tasks: ["less"]
}
}
Add the less task to grunt.initConfig
// "less"-task configuration
//this task will compile all less files to create both *.css and *.min.css
less: {
//Development non minified version
dev: {
options: {
//Wether to compress or not
compress: false
},
files: {
// compilation.css : source.less
"src/main/webapp/assets/styles/main.css": "src/main/less/main.less",
"src/main/webapp/assets/styles/skins/_all-skins.css": "src/main/less/skins/_all-skins.less",
"src/main/webapp/bower_components/bootstrap/dist/css/bootstrap.css": "src/main/webapp/bower_components/bootstrap/less/bootstrap.less"
}
}
}
Add the less task to the cuncurrent task if you need less to be executed concurrently
concurrent: {
server: [
'less',
'imagemin',
'svgmin'
],
test: [
],
dist: [
'less',
'imagemin',
'svgmin'
]
}
Add the css paths to the index.html file inside the CSS build task so that these are minified and compacted by build task
<!-- build:css assets/styles/main.css -->
<link rel="stylesheet" href="assets/styles/main.css">
<link rel="stylesheet" href="assets/styles/skins/skin-def.css">
<link rel="stylesheet" href="assets/styles/cms-custom.css">
<!-- endbuild -->
// Generated on 2015-05-20 using generator-jhipster 2.11.0
'use strict';
var fs = require('fs');
// Returns the first occurence of the version number
var parseVersionFromBuildGradle = function() {
var versionRegex = /^version\s*=\s*[',"]([^',"]*)[',"]/gm; // Match and group the version number
var buildGradle = fs.readFileSync('build.gradle', "utf8");
return versionRegex.exec(buildGradle)[1];
};
// usemin custom step
var useminAutoprefixer = {
name: 'autoprefixer',
createConfig: function(context, block) {
if(block.src.length === 0) {
return {};
} else {
return require('grunt-usemin/lib/config/cssmin').createConfig(context, block) // Reuse cssmins createConfig
}
}
};
module.exports = function (grunt) {
require('load-grunt-tasks')(grunt);
require('time-grunt')(grunt);
grunt.initConfig({
yeoman: {
// configurable paths
app: require('./bower.json').appPath || 'app',
dist: 'src/main/webapp/dist'
},
watch: {
bower: {
files: ['bower.json'],
tasks: ['wiredep']
},
ngconstant: {
files: ['Gruntfile.js', 'build.gradle'],
tasks: ['ngconstant:dev']
},
styles: {
files: ['src/main/webapp/assets/styles/**/*.css']
},
less:{
// if any .less file changes in directory "build/less/" run the "less"-task.
files: ["src/main/less/*.less", "src/main/webapp/bower_components/bootstrap/less/*.less"],
tasks: ["less"]
}
},
autoprefixer: {
// not used since Uglify task does autoprefixer,
// options: ['last 1 version'],
// dist: {
// files: [{
// expand: true,
// cwd: '.tmp/styles/',
// src: '**/*.css',
// dest: '.tmp/styles/'
// }]
// }
},
wiredep: {
app: {
src: ['src/main/webapp/index.html'],
exclude: [
/angular-i18n/, // localizations are loaded dynamically
/swagger-ui/
]
},
test: {
src: 'src/test/javascript/karma.conf.js',
exclude: [/angular-i18n/, /swagger-ui/, /angular-scenario/],
ignorePath: /\.\.\/\.\.\//, // remove ../../ from paths of injected javascripts
devDependencies: true,
fileTypes: {
js: {
block: /(([\s\t]*)\/\/\s*bower:*(\S*))(\n|\r|.)*?(\/\/\s*endbower)/gi,
detect: {
js: /'(.*\.js)'/gi
},
replace: {
js: '\'\','
}
}
}
}
},
browserSync: {
dev: {
bsFiles: {
src : [
'src/main/webapp/**/*.html',
'src/main/webapp/**/*.json',
'src/main/webapp/assets/styles/**/*.css',
'src/main/webapp/scripts/**/*.js',
'src/main/webapp/assets/images/**/*.{png,jpg,jpeg,gif,webp,svg}',
'tmp/**/*.{css,js}'
]
}
},
options: {
watchTask: true,
proxy: "localhost:8080"
}
},
clean: {
dist: {
files: [{
dot: true,
src: [
'.tmp',
'<%= yeoman.dist %>/*',
'!<%= yeoman.dist %>/.git*'
]
}]
},
server: '.tmp'
},
jshint: {
options: {
jshintrc: '.jshintrc'
},
all: [
'Gruntfile.js',
'src/main/webapp/scripts/app.js',
'src/main/webapp/scripts/app/**/*.js',
'src/main/webapp/scripts/components/**/*.js'
]
},
coffee: {
options: {
sourceMap: true,
sourceRoot: ''
},
dist: {
files: [{
expand: true,
cwd: 'src/main/webapp/scripts',
src: ['scripts/app/**/*.coffee', 'scripts/components/**/*.coffee'],
dest: '.tmp/scripts',
ext: '.js'
}]
},
test: {
files: [{
expand: true,
cwd: 'test/spec',
src: '**/*.coffee',
dest: '.tmp/spec',
ext: '.js'
}]
}
},
// "less"-task configuration
//this task will compile all less files to create both *.css and *.min.css
less: {
//Development non minified version
dev: {
options: {
//Wether to compress or not
compress: false
},
files: {
// compilation.css : source.less
"src/main/webapp/assets/styles/main.css": "src/main/less/main.less",
"src/main/webapp/assets/styles/skins/_all-skins.css": "src/main/less/skins/_all-skins.less",
"src/main/webapp/bower_components/bootstrap/dist/css/bootstrap.css": "src/main/webapp/bower_components/bootstrap/less/bootstrap.less"
}
}
},
concat: {
// not used since Uglify task does concat,
// but still available if needed
// dist: {}
},
rev: {
dist: {
files: {
src: [
'<%= yeoman.dist %>/scripts/**/*.js',
'<%= yeoman.dist %>/assets/styles/**/*.css',
'<%= yeoman.dist %>/assets/images/**/*.{png,jpg,jpeg,gif,webp,svg}',
'<%= yeoman.dist %>/assets/fonts/*'
]
}
}
},
useminPrepare: {
html: 'src/main/webapp/**/*.html',
options: {
dest: '<%= yeoman.dist %>',
flow: {
html: {
steps: {
js: ['concat', 'uglifyjs'],
css: ['cssmin', useminAutoprefixer] // Let cssmin concat files so it corrects relative paths to fonts and images
},
post: {}
}
}
}
},
usemin: {
html: ['<%= yeoman.dist %>/**/*.html'],
css: ['<%= yeoman.dist %>/assets/styles/**/*.css'],
js: ['<%= yeoman.dist %>/scripts/**/*.js'],
options: {
assetsDirs: ['<%= yeoman.dist %>', '<%= yeoman.dist %>/assets/styles', '<%= yeoman.dist %>/assets/images', '<%= yeoman.dist %>/assets/fonts'],
patterns: {
js: [
[/(assets\/images\/.*?\.(?:gif|jpeg|jpg|png|webp|svg))/gm, 'Update the JS to reference our revved images']
]
},
dirs: ['<%= yeoman.dist %>']
}
},
imagemin: {
dist: {
files: [{
expand: true,
cwd: 'src/main/webapp/assets/images',
src: '**/*.{jpg,jpeg}', // we don't optimize PNG files as it doesn't work on Linux. If you are not on Linux, feel free to use '**/*.{png,jpg,jpeg}'
dest: '<%= yeoman.dist %>/assets/images'
}]
}
},
svgmin: {
dist: {
files: [{
expand: true,
cwd: 'src/main/webapp/assets/images',
src: '**/*.svg',
dest: '<%= yeoman.dist %>/assets/images'
}]
}
},
cssmin: {
// By default, your `index.html` <!-- Usemin Block --> will take care of
// minification. This option is pre-configured if you do not wish to use
// Usemin blocks.
// dist: {
// files: {
// '<%= yeoman.dist %>/styles/main.css': [
// '.tmp/styles/**/*.css',
// 'styles/**/*.css'
// ]
// }
// }
options: {
root: 'src/main/webapp' // Replace relative paths for static resources with absolute path
}
},
ngtemplates: {
dist: {
cwd: 'src/main/webapp',
src: ['scripts/app/**/*.html', 'scripts/components/**/*.html',],
dest: '.tmp/templates/templates.js',
options: {
module: 'jhipsterApp',
usemin: 'scripts/app.js',
htmlmin: {
removeCommentsFromCDATA: true,
// https://github.com/yeoman/grunt-usemin/issues/44
collapseWhitespace: true,
collapseBooleanAttributes: true,
conservativeCollapse: true,
removeAttributeQuotes: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true
}
}
}
},
htmlmin: {
dist: {
options: {
removeCommentsFromCDATA: true,
// https://github.com/yeoman/grunt-usemin/issues/44
collapseWhitespace: true,
collapseBooleanAttributes: true,
conservativeCollapse: true,
removeAttributeQuotes: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
keepClosingSlash: true
},
files: [{
expand: true,
cwd: '<%= yeoman.dist %>',
src: ['*.html'],
dest: '<%= yeoman.dist %>'
}]
}
},
// Put files not handled in other tasks here
copy: {
dist: {
files: [{
expand: true,
dot: true,
cwd: 'src/main/webapp',
dest: '<%= yeoman.dist %>',
src: [
'*.html',
'scripts/**/*.html',
'assets/images/**/*.{png,gif,webp,jpg,jpeg,svg}',
'assets/fonts/*'
]
}, {
expand: true,
cwd: '.tmp/assets/images',
dest: '<%= yeoman.dist %>/assets/images',
src: [
'generated/*'
]
}]
},
generateOpenshiftDirectory: {
expand: true,
dest: 'deploy/openshift',
src: [
'pom.xml',
'src/main/**'
]
}
},
concurrent: {
server: [
'less',
'imagemin',
'svgmin'
],
test: [
],
dist: [
'less',
'imagemin',
'svgmin'
]
},
karma: {
unit: {
configFile: 'src/test/javascript/karma.conf.js',
singleRun: true
}
},
cdnify: {
dist: {
html: ['<%= yeoman.dist %>/*.html']
}
},
ngAnnotate: {
dist: {
files: [{
expand: true,
cwd: '.tmp/concat/scripts',
src: '*.js',
dest: '.tmp/concat/scripts'
}]
}
},
buildcontrol: {
options: {
commit: true,
push: false,
connectCommits: false,
message: 'Built %sourceName% from commit %sourceCommit% on branch %sourceBranch%'
},
openshift: {
options: {
dir: 'deploy/openshift',
remote: 'openshift',
branch: 'master'
}
}
},
ngconstant: {
options: {
name: 'jhipsterApp',
deps: false,
wrap: '"use strict";\n// DO NOT EDIT THIS FILE, EDIT THE GRUNT TASK NGCONSTANT SETTINGS INSTEAD WHICH GENERATES THIS FILE\n'
},
dev: {
options: {
dest: 'src/main/webapp/scripts/app/app.constants.js'
},
constants: {
ENV: 'dev',
VERSION: parseVersionFromBuildGradle()
}
},
prod: {
options: {
dest: '.tmp/scripts/app/app.constants.js'
},
constants: {
ENV: 'prod',
VERSION: parseVersionFromBuildGradle()
}
}
}});
grunt.registerTask('serve', [
'clean:server',
'wiredep',
'ngconstant:dev',
'concurrent:server',
'browserSync',
'watch'
]);
grunt.registerTask('server', function (target) {
grunt.log.warn('The `server` task has been deprecated. Use `grunt serve` to start a server.');
grunt.task.run([target ? ('serve:' + target) : 'serve']);
});
grunt.registerTask('test', [
'clean:server',
'wiredep:test',
'ngconstant:dev',
'concurrent:test',
'karma'
]);
grunt.registerTask('build', [
'clean:dist',
'wiredep:app',
'ngconstant:prod',
'useminPrepare',
'ngtemplates',
'concurrent:dist',
'concat',
'copy:dist',
'ngAnnotate',
'cssmin',
'autoprefixer',
'uglify',
'rev',
'usemin',
'htmlmin'
]);
grunt.registerTask('appendSkipBower', 'Force skip of bower for Gradle', function () {
if (!grunt.file.exists(filepath)) {
// Assume this is a maven project
return true;
}
var fileContent = grunt.file.read(filepath);
var skipBowerIndex = fileContent.indexOf("skipBower=true");
if (skipBowerIndex != -1) {
return true;
}
grunt.file.write(filepath, fileContent + "\nskipBower=true\n");
});
grunt.registerTask('buildOpenshift', [
'test',
'build',
'copy:generateOpenshiftDirectory',
]);
grunt.registerTask('deployOpenshift', [
'test',
'build',
'copy:generateOpenshiftDirectory',
'buildcontrol:openshift'
]);
grunt.registerTask('default', [
'test',
'build'
]);
};