[typescript]: Add workaround to include better typescript support.

Author: aFarkas

Gruntfile.js

@@ -101,6 +101,14 @@
 			grunt.file.write('lazysizes-umd.js', umd.replace('{{ls}}', ls));
 		});
 
+		grunt.registerTask('importTs', 'import global typescript.', function() {
+			const fileName = './lazysizes.d.ts';
+			const importStr =  `import './types/global';\n\n`;
+			const tsContent = grunt.file.read(fileName);
+
+			grunt.file.write(fileName, importStr + tsContent);
+		});
+
 
 		// Default task.
 		grunt.registerTask("default", [ "wrapcore", "test", "uglify", "bytesize", "maxFilesize" ]);

lazysizes-umd.js

@@ -9,8 +9,7 @@
 	}
 }(window, 
 /**
- * import("./types/global")
- * @typedef { import("./types/lazysizes-config").LazySizesConfigPartial } LazySizesConfigPartial
+ * @typedef { import("./types/global").LazySizesConfigPartial } LazySizesConfigPartial
  */
 function l(window, document, Date) { // Pass in the window Date function also for SSR because the Date class can be lost
 	'use strict';

lazysizes.d.ts

@@ -1,3 +1,5 @@
+import './types/global';
+
 export = lazySizes;
 declare var lazySizes: {
     init: () => void;
@@ -53,9 +55,6 @@ declare var lazySizes: {
 declare namespace lazySizes {
     export { LazySizesConfigPartial };
 }
-/**
- * import("./types/global")
- */
 type LazySizesConfigPartial = {
     [x: string]: any;
     lazyClass?: string;

lazysizes.js

@@ -7,8 +7,7 @@
 }(typeof window != 'undefined' ?
       window : {}, 
 /**
- * import("./types/global")
- * @typedef { import("./types/lazysizes-config").LazySizesConfigPartial } LazySizesConfigPartial
+ * @typedef { import("./types/global").LazySizesConfigPartial } LazySizesConfigPartial
  */
 function l(window, document, Date) { // Pass in the window Date function also for SSR because the Date class can be lost
 	'use strict';

package.json

@@ -5,7 +5,8 @@
   "license": "MIT",
   "author": "Alexander Farkas <alex@boffinhouse.com>",
   "scripts": {
-    "prepublishOnly": "grunt && tsc"
+		"build": "grunt && tsc && grunt importTs",
+    "prepublishOnly": "npm run build"
   },
   "repository": {
     "type": "git",

src/lazysizes-core.js

@@ -1,7 +1,6 @@
 
 /**
- * import("./types/global")
- * @typedef { import("./types/lazysizes-config").LazySizesConfigPartial } LazySizesConfigPartial
+ * @typedef { import("./types/global").LazySizesConfigPartial } LazySizesConfigPartial
  */
 function l(window, document, Date) { // Pass in the window Date function also for SSR because the Date class can be lost
 	'use strict';

types/global.d.ts

@@ -1,5 +1,6 @@
-// import type * as lazySizes from '../lazysizes';
-import { LazySizesConfigPartial } from './lazysizes-config';
+import { LazySizesConfigPartial, LazySizesConfig } from './lazysizes-config';
+
+export { LazySizesConfigPartial, LazySizesConfig };
 
 export interface LazyUnveilReadEvent extends CustomEvent {
 	target: Element;