Added JSDoc comments to src/main.js.

src/main.js

@@ -10,6 +10,9 @@ const mezzuriteLoadCheckInterval = setInterval(
 
 ////////////////////////////////
 
+/**
+ * Creates the Mezzurite panel in the Chrome Developer Tools page.
+ */
 function createPanel() {
     const title = "Mezzurite";
     const iconPath = null;
@@ -19,11 +22,27 @@ function createPanel() {
     });
 }
 
+/**
+ * This is a callback function signature for handling the response that
+ * is asynchronously returned by `chrome.devtools.inspectedWindow.eval()`.
+ * @callback evalCallback
+ * @param {Object} result - The result of the evaluated statement.
+ * @param {Object} exceptionInfo - The exception details, if present.
+ */
+
+/**
+ * Attempts to get the `window.mezzurite` object from the inspected window.
+ * @param {evalCallback} callback - The callback that handles the response.
+ */
 function getMezzuriteObject(callback) {
     const expression = `window.mezzurite`;
     chrome.devtools.inspectedWindow.eval(expression, callback);
 }
 
+/**
+ * Creates the `Mezzurite` panel in the DevTools page if Mezzurite
+ * is present on the inspected page.
+ */
 function createPanelIfMezzuriteLoaded() {
     if (isPanelCreated) {
         return;
@@ -34,6 +53,8 @@ function createPanelIfMezzuriteLoaded() {
             return; // Mezzurite not found
         }
 
+        console.log("Mezzurite was found!");
+
         // Stop checking for Mezzurite every second, as we have found it.
         clearInterval(mezzuriteLoadCheckInterval);
         isPanelCreated = true;