diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-includes/blocks/categories/block.json
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/categories/block.json	Tue Dec 15 13:49:49 2020 +0100
@@ -0,0 +1,35 @@
+{
+	"name": "core/categories",
+	"category": "widgets",
+	"attributes": {
+		"align": {
+			"type": "string",
+			"enum": [
+				"left",
+				"center",
+				"right",
+				"wide",
+				"full"
+			]
+		},
+		"className": {
+			"type": "string"
+		},
+		"displayAsDropdown": {
+			"type": "boolean",
+			"default": false
+		},
+		"showHierarchy": {
+			"type": "boolean",
+			"default": false
+		},
+		"showPostCounts": {
+			"type": "boolean",
+			"default": false
+		}
+	},
+	"supports": {
+		"align": true,
+		"html": false
+	}
+}