format_iai

svgSprite 		= require('gulp-svg-sprite');
svgmin 			= require('gulp-svgmin'),
cheerio 			= require('gulp-cheerio'),

gulp.task('svg', function () {
	return gulp.src('app/img/svg/*.svg') // svg files for sprite
	// minify svg
	.pipe(svgmin({
		js2svg: {
			pretty: true
		}
	}))
		// remove all fill and style declarations in out shapes
		.pipe(cheerio({
			run: function ($) {
				$('[fill]').removeAttr('fill');
				$('[style]').removeAttr('style');
			},
			parserOptions: { xmlMode: true }
		}))
		// cheerio plugin create unnecessary string '>', so replace it.
		.pipe(replace('>', '>'))
		// build svg sprite
		.pipe(svgSprite({
			mode: {
				stack: {
				sprite: "../sprite.svg"  //sprite file name
			}
		},
	}
	))
		.pipe(gulp.dest('app/img/sprite/'));
	});