/
gulpfile.js
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/
gulpfile.js
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'use strict';
const path = require('path');
const gulp = require('gulp');
const connect = require('gulp-connect');
const pathConfig = {
'ui': {
'core': {
'resources': './',
'sass': {
'src': 'assets/src/scss/',
'dest': 'assets/css/'
}
},
'guide': {
'resources': 'atlas/'
},
'lib': {
'resources': ''
}
}
};
/*
* Local server for static assets with live reload
*/
gulp.task('server:up', () => {
const cors = (req, res, next) => {
res.setHeader('Access-Control-Allow-Origin', '*');
next();
};
return connect.server({
root: [
pathConfig.ui.core.resources,
pathConfig.ui.guide.resources
],
port: 5000,
host: '127.0.0.1',
livereload: {
start: true,
port: 9000
},
middleware() {
return [cors];
},
https: true
});
});
/*
* Sass compilation
*/
let changedFilePath = '';
let generateFilePath = [];
let importsGraph;
const createImportsGraph = () => importsGraph = require('sass-graph').parseDir(
pathConfig.ui.core.sass.src,
{ loadPaths: [pathConfig.ui.lib.resources] }
);
/**
* Configurable Sass compilation
* @param {Object} config
*/
const sassCompile = config => {
const sass = require('gulp-sass');
const postcss = require('gulp-postcss');
const autoprefixer = require('autoprefixer');
const sourcemaps = require('gulp-sourcemaps');
const postProcessors = [
autoprefixer({
flexbox: 'no-2009'
})
];
return gulp.src(config.source)
.pipe(sourcemaps.init({
loadMaps: true,
largeFile: true
}))
.pipe(sass({
includePaths: config.alsoSearchIn,
sourceMap: false,
outputStyle: 'compressed',
indentType: 'tab',
indentWidth: '1',
linefeed: 'lf',
precision: 10,
errLogToConsole: true
}))
.on('error', function (error) {
console.log('\x07');
console.log('\x1b[35m' + error.message + '\x1b[0m');
this.emit('end');
})
.pipe(postcss(postProcessors))
.pipe(sourcemaps.write('.'))
.pipe(gulp.dest(config.dest));
};
/**
* Get file path that should be compiled
* @param {string} changedFile - changed file path
* @return {array} pathsArray - Array of strings. Path to the main scss files that
* includes changed file.
*/
const getResultedFilesList = changedFile => {
// Ensure that changed file is Sass file
if (path.extname(changedFile) !== '.scss') {
return [];
}
let resultedFilesPath = []; // used for compilation
let resultedCSSPaths = []; // used for reload
const getResultedCSSPath = path => path
.replace(pathConfig.ui.core.sass.src, pathConfig.ui.core.sass.dest)
.replace('.scss', '.css');
if (!path.basename(changedFile).match(/^_/)) {
resultedFilesPath.push(changedFile);
resultedCSSPaths = [getResultedCSSPath(changedFile)];
createImportsGraph(); // Rebuild imports graph
} else {
importsGraph.visitAncestors(changedFile, parent => {
if (!path.basename(parent).match(/^_/)) {
resultedFilesPath.push(parent);
resultedCSSPaths.push(getResultedCSSPath(parent));
}
});
}
generateFilePath = resultedCSSPaths; // side effects is bad, find better solution
return resultedFilesPath;
};
// Compile all Sass files
gulp.task('styles:compile:all', () => sassCompile({
source: pathConfig.ui.core.sass.src + '*.scss',
dest: pathConfig.ui.core.sass.dest,
alsoSearchIn: [pathConfig.ui.lib.resources]
}));
// Compile only particular Sass file that has import of changed file
gulp.task('styles:compile:incremental', () => sassCompile({
source: getResultedFilesList(changedFilePath),
dest: pathConfig.ui.core.sass.dest,
alsoSearchIn: [pathConfig.ui.lib.resources]
}));
// Compile all Sass files and watch for changes
gulp.task('styles:watch', () => {
createImportsGraph();
gulp.watch(
pathConfig.ui.core.sass.src + '**/*.scss',
['server:reload:styles']
).on('change', event => changedFilePath = event.path);
});
// Reload the CSS links right after 'styles:compile:incremental' task is returned
gulp.task('server:reload:styles', ['styles:compile:incremental'], () =>
gulp.src(generateFilePath) // css only reload
.pipe(connect.reload()));
/*
* Guide generation
*/
const atlas = require('./app/atlas-guide.js');
// Compile all components pages
// if installed it should be require('atlas-guide').buildAll();
gulp.task('atlas:compile', () => atlas.build());
// Compile particular page from the guide
gulp.task('atlas:compile:incremental', ['styles:compile:incremental'], () => atlas.build(changedFilePath));
// if installed it should be require('atlas-guide').buildAll();
gulp.task('atlas:compile:all', () => atlas.buildAll());
// Compile Guide and watch changes
gulp.task('atlas:watch', () => {
createImportsGraph();
gulp.watch(
[pathConfig.ui.core.sass.src + '**/*.scss', pathConfig.ui.core.sass.src + '**/*.md'],
['server:reload:guide']
).on('change', event => changedFilePath = event.path);
});
// Reload the page right after 'atlas:compile:incremental' task is returned
gulp.task('server:reload:guide', ['atlas:compile:incremental'], () =>
gulp.src(pathConfig.ui.guide.resources + '*.html') // full page reload
.pipe(connect.reload()));
/*
* Complex tasks
*/
gulp.task('default', '');
gulp.task('dev', ['server:up', 'styles:compile:all', 'styles:watch']);
// change to atlas:compile for regular projects, for our cases we compile all atlas in dev workflow
gulp.task('dev:atlas', ['server:up', 'styles:compile:all', 'atlas:compile:all', 'atlas:watch']);
gulp.task('build', ['styles:compile:all', 'atlas:compile:all']);