first try

build/space-status/block.json

@@ -0,0 +1,15 @@
+{
+  "apiVersion": 3,
+  "name": "wp-spaceapi-consumer/space-status",
+  "title": "Space Status",
+  "description": "Show whether the space is open or closed (SpaceAPI consumer).",
+  "category": "widgets",
+  "icon": "info",
+  "textdomain": "wp-spaceapi-consumer",
+  "style": "file:./style.css",
+  "editorStyle": "file:./editor.css",
+  "editorScript": "file:./index.js",
+  "supports": {
+    "html": false
+  }
+}

build/space-status/index.asset.php

@@ -0,0 +1 @@
+<?php return array('dependencies' => array('react-jsx-runtime', 'wp-blocks', 'wp-i18n', 'wp-server-side-render'), 'version' => 'e81eff0b8644d0be4dac');

build/space-status/index.js

@@ -0,0 +1 @@
+(()=>{"use strict";var e={n:r=>{var s=r&&r.__esModule?()=>r.default:()=>r;return e.d(s,{a:s}),s},d:(r,s)=>{for(var t in s)e.o(s,t)&&!e.o(r,t)&&Object.defineProperty(r,t,{enumerable:!0,get:s[t]})},o:(e,r)=>Object.prototype.hasOwnProperty.call(e,r)};window.wp.i18n;const r=window.wp.blocks,s=window.wp.serverSideRender;var t=e.n(s);const o=window.ReactJSXRuntime;(0,r.registerBlockType)("wp-spaceapi-consumer/space-status",{edit:()=>(0,o.jsx)(t(),{block:"wp-spaceapi-consumer/space-status"}),save:()=>null})})();