API: Validate Function blocks to find missing props

Author: rdw-software

src/components/API/API.jsx

@@ -2,10 +2,27 @@ import React from "react";
 
 import styles from "./styles.module.css";
 
+function errorMessage(propertyName) {
+  const what = "";
+  const where = location.pathname;
+  const message = `Missing property (${propertyName}) for (Function) imported from here: ${where}. Please add one!\n\n`;
+  return message;
+}
+
 class Function extends React.Component {
   render() {
     const since = this.props.since;
     const children = this.props.children;
+
+    const isRunningInDevelopmentMode = process.env.NODE_ENV !== "production";
+    if (isRunningInDevelopmentMode) {
+      // Doesn't look like more context can easily be obtained, so let's leave it at that...
+      const where = location;
+      const what = `Missing property (since) for (Function) imported from ${where}`;
+      const message = `${what}`;
+      if (!since) throw new Error(message);
+    }
+
     const sinceBlock = (since && (
       <>
         <span className={styles.sinceBlock}>Available since: {since}</span>