f353db012effe3d5cf90195cf5b0b3036333bd52 Fix: Remove the use of `Arra…

…y.prototype.flat()` as it wasn't supported in Safari until v12

https://datatables.net/forums/discussion/79829

Sync to source repo @f353db012effe3d5cf90195cf5b0b3036333bd52

datatables.json

@@ -11,5 +11,5 @@
     ],
     "src-repo": "http://github.com/DataTables/DataTablesSrc",
     "last-tag": "2.1.6",
-    "last-sync": "cfcb5d9c77fadc54f90ebe80edf0c8cc4c9b9b76"
+    "last-sync": "f353db012effe3d5cf90195cf5b0b3036333bd52"
 }

js/dataTables.js

@@ -13230,15 +13230,17 @@
 			all        = len === -1,
 			page = all ? 0 : Math.ceil( start / len ),
 			pages = all ? 1 : Math.ceil( visRecords / len ),
-			buttons = plugin(opts)
+			buttons = [],
+			buttonEls = [],
+			buttonsNested = plugin(opts)
 				.map(function (val) {
 					return val === 'numbers'
 						? _pagingNumbers(page, pages, opts.buttons, opts.boundaryNumbers)
 						: val;
-				})
-				.flat();
+				});
 
-		var buttonEls = [];
+		// .flat() would be better, but not supported in old Safari
+		buttons = buttons.concat.apply(buttons, buttonsNested);
 
 		for (var i=0 ; i<buttons.length ; i++) {
 			var button = buttons[i];

js/dataTables.mjs

@@ -13177,15 +13177,17 @@ function _pagingDraw(settings, host, opts) {
 		all        = len === -1,
 		page = all ? 0 : Math.ceil( start / len ),
 		pages = all ? 1 : Math.ceil( visRecords / len ),
-		buttons = plugin(opts)
+		buttons = [],
+		buttonEls = [],
+		buttonsNested = plugin(opts)
 			.map(function (val) {
 				return val === 'numbers'
 					? _pagingNumbers(page, pages, opts.buttons, opts.boundaryNumbers)
 					: val;
-			})
-			.flat();
+			});
 
-	var buttonEls = [];
+	// .flat() would be better, but not supported in old Safari
+	buttons = buttons.concat.apply(buttons, buttonsNested);
 
 	for (var i=0 ; i<buttons.length ; i++) {
 		var button = buttons[i];