Adding debug tooling for rendering component bounding boxes

src/components/Render/index.js

@@ -5,19 +5,40 @@ import nodeTypes from 'rendering/types';
 
 import style from './style.module.css';
 
+const debugBox = {
+  fill: 'transparent',
+  stroke: 'red',
+  strokeWidth: '1px',
+  strokeDasharray: '2,2',
+  opacity: 0.5
+};
+const debugPin = {
+  fill: 'red',
+  opacity: 0.5
+};
+// eslint-disable-next-line react/prop-types
+const renderDebug = ({ x, y, width, height, axisX1, axisX2, axisY }) => <>
+  <rect style={ debugBox } x={ x } y={ y } width={ width } height={ height }/>
+  <circle style={ debugPin } cx={ axisX1 } cy={ axisY } r="3" />
+  <circle style={ debugPin } cx={ axisX2 } cy={ axisY } r="3" />
+</>;
+
 const render = (data, extraProps) => {
   if (typeof data === 'string') {
     return data;
   }
 
-  const { type, props } = data;
+  const { type, props, debug, box } = data;
   const children = (data.children || []).map(
     (data, key) => render(data, { key }));
 
-  return React.createElement(
+  return <>
-    nodeTypes[type] ? nodeTypes[type].default : type,
+    { React.createElement(
-    { ...extraProps, ...props },
+      nodeTypes[type] ? nodeTypes[type].default : type,
-    children.length === 1 ? children[0] : children);
+      { ...extraProps, ...props },
+      children.length === 1 ? children[0] : children) }
+    { debug && renderDebug(box) }
+  </>;
 };
 
 class Render extends React.PureComponent {