java-tutorials/jhipster/jhipster-microservice/gateway-app/gulp/build.js

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'use strict';
var fs = require('fs'),
gulp = require('gulp'),
lazypipe = require('lazypipe'),
footer = require('gulp-footer'),
sourcemaps = require('gulp-sourcemaps'),
rev = require('gulp-rev'),
htmlmin = require('gulp-htmlmin'),
ngAnnotate = require('gulp-ng-annotate'),
prefix = require('gulp-autoprefixer'),
cssnano = require('gulp-cssnano'),
uglify = require('gulp-uglify'),
useref = require("gulp-useref"),
revReplace = require("gulp-rev-replace"),
plumber = require('gulp-plumber'),
gulpIf = require('gulp-if'),
handleErrors = require('./handle-errors');
var config = require('./config');
var initTask = lazypipe()
.pipe(sourcemaps.init);
var jsTask = lazypipe()
.pipe(ngAnnotate)
.pipe(uglify);
var cssTask = lazypipe()
.pipe(prefix)
.pipe(cssnano);
module.exports = function() {
var templates = fs.readFileSync(config.tmp + '/templates.js');
var manifest = gulp.src(config.revManifest);
return gulp.src([config.app + '**/*.html',
'!' + config.app + 'app/**/*.html',
'!' + config.app + 'swagger-ui/**/*',
'!' + config.bower + '**/*.html'])
.pipe(plumber({errorHandler: handleErrors}))
//init sourcemaps and prepend semicolon
.pipe(useref({}, initTask))
//append html templates
.pipe(gulpIf('**/app.js', footer(templates)))
.pipe(gulpIf('*.js', jsTask()))
.pipe(gulpIf('*.css', cssTask()))
.pipe(gulpIf('*.html', htmlmin({collapseWhitespace: true})))
.pipe(gulpIf('**/*.!(html)', rev()))
.pipe(revReplace({manifest: manifest}))
.pipe(sourcemaps.write('.'))
.pipe(gulp.dest(config.dist));
};