Fix for Typescript import syntax

ES6 style syntax causes compiled code to function in unintended ways,
leading to incorrect JavaScript code.

gulp-jade/gulp-jade-tests.ts

@@ -2,7 +2,7 @@
 /// <reference path="./gulp-jade.d.ts"/>
 
 import * as gulp from 'gulp';
-import jade from 'gulp-jade';
+import * as jade from 'gulp-jade';
 
 gulp.task('jade', () => {
   gulp.src('src/**/*.jade')

gulp-jade/gulp-jade.d.ts

@@ -4,80 +4,84 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module "gulp-jade" {
-  export default function jade(params?: JadeParams): any;
-
-  interface JadeParams {
-
-    /*******
-     * JADE API OPTIONS
-     *******/
-
-    /**
-     * If the doctype is not specified as part of the 
-     * template, you can specify it here. It is sometimes
-     * useful to get self-closing tags and remove mirroring
-     * of boolean attributes.
-     */
-    doctype?: string;
-
-    /**
-     * Adds whitespace to the resulting html to make it
-     * easier for a human to read using '  ' as indentation. 
-     * If a string is specified, that will be used as 
-     * indentation instead (e.g. '\t').
-     */
-    pretty?: any;
-
-    /**
-     * Use a self namespace to hold the locals (false by default)
-     */
-    self?: boolean;
-
-    /**
-     * If set to true, the tokens and function body is logged 
-     * to stdout
-     */
-    debug?: boolean;
-
-    /**
-     * If set to true, the function source will be included in the
-     * compiled template for better error messages (sometimes useful
-     * in development). It is enabled by default unless used with
-     * express in production mode.
-     */
-    compileDebug?:boolean;
-
-    /**
-     * If set to true, compiled functions are cached. filename 
-     * must be set as the cache key.
-     */
-    cache?:boolean;
-
-    /*******
-     * GULP-JADE OPTIONS
-     *******/
-
-    /**
-     * Used to set a version of jade other than this library's
-     * dependency, or to customise filters.
-     */
-    jade?: any;
-
-    /**
-     * Compile to JS instead of HTML.
-     */
-    client?: boolean;
-
-    /**
-     * Locals to be used while parsing jade files. Takes
-     * precedence over data.
-     */
-    locals?: any;
-
-    /**
-     * Data to be used while parsing jade files. Has lower
-     * precedence than locals.
-     */
-    data?: any;
+
+  function GulpJade(params?: GulpJade.Params): any;
+
+  module GulpJade {
+    interface Params {
+        /*******
+        * JADE API OPTIONS
+        *******/
+
+        /**
+        * If the doctype is not specified as part of the 
+        * template, you can specify it here. It is sometimes
+        * useful to get self-closing tags and remove mirroring
+        * of boolean attributes.
+        */
+        doctype?: string;
+
+        /**
+        * Adds whitespace to the resulting html to make it
+        * easier for a human to read using '  ' as indentation. 
+        * If a string is specified, that will be used as 
+        * indentation instead (e.g. '\t').
+        */
+        pretty?: any;
+
+        /**
+        * Use a self namespace to hold the locals (false by default)
+        */
+        self?: boolean;
+
+        /**
+        * If set to true, the tokens and function body is logged 
+        * to stdout
+        */
+        debug?: boolean;
+
+        /**
+        * If set to true, the function source will be included in the
+        * compiled template for better error messages (sometimes useful
+        * in development). It is enabled by default unless used with
+        * express in production mode.
+        */
+        compileDebug?:boolean;
+
+        /**
+        * If set to true, compiled functions are cached. filename 
+        * must be set as the cache key.
+        */
+        cache?:boolean;
+
+        /*******
+        * GULP-JADE OPTIONS
+        *******/
+
+        /**
+        * Used to set a version of jade other than this library's
+        * dependency, or to customise filters.
+        */
+        jade?: any;
+
+        /**
+        * Compile to JS instead of HTML.
+        */
+        client?: boolean;
+
+        /**
+        * Locals to be used while parsing jade files. Takes
+        * precedence over data.
+        */
+        locals?: any;
+
+        /**
+        * Data to be used while parsing jade files. Has lower
+        * precedence than locals.
+        */
+        data?: any;
+    }
   }
+
+  export = GulpJade;
 }