Merge pull request #7416 from Brooooooklyn/issue/gulp-minify-css

fix import

gulp-minify-css/gulp-minify-css-tests.ts

@@ -1,8 +1,8 @@
 /// <reference path="./gulp-minify-css.d.ts" />
 /// <reference path="../gulp/gulp.d.ts" />
 
-import gulp = require("gulp");
-import minifyCSS = require("gulp-minify-css");
+import * as gulp from "gulp";
+import * as minifyCSS from "gulp-minify-css";
 
 gulp.task("minify-css", () => {
     gulp.src("css/**/*.css")

gulp-minify-css/gulp-minify-css.d.ts

@@ -27,5 +27,7 @@ declare module "gulp-minify-css" {
 
     function minifyCSS(options?: IOptions): NodeJS.ReadWriteStream;
 
+    namespace minifyCSS {}
+
     export = minifyCSS;
 }