Initial commit

skills/chrome-devtools/scripts/snapshot.js

@@ -0,0 +1,131 @@
+#!/usr/bin/env node
+/**
+ * Get DOM snapshot with selectors
+ * Usage: node snapshot.js [--url https://example.com] [--output snapshot.json]
+ */
+import { getBrowser, getPage, closeBrowser, parseArgs, outputJSON, outputError } from './lib/browser.js';
+import fs from 'fs/promises';
+
+async function snapshot() {
+  const args = parseArgs(process.argv.slice(2));
+
+  try {
+    const browser = await getBrowser({
+      headless: args.headless !== 'false'
+    });
+
+    const page = await getPage(browser);
+
+    // Navigate if URL provided
+    if (args.url) {
+      await page.goto(args.url, {
+        waitUntil: args['wait-until'] || 'networkidle2'
+      });
+    }
+
+    // Get interactive elements with metadata
+    const elements = await page.evaluate(() => {
+      const interactiveSelectors = [
+        'a[href]',
+        'button',
+        'input',
+        'textarea',
+        'select',
+        '[onclick]',
+        '[role="button"]',
+        '[role="link"]',
+        '[contenteditable]'
+      ];
+
+      const elements = [];
+      const selector = interactiveSelectors.join(', ');
+      const nodes = document.querySelectorAll(selector);
+
+      nodes.forEach((el, index) => {
+        const rect = el.getBoundingClientRect();
+
+        // Generate unique selector
+        let uniqueSelector = '';
+        if (el.id) {
+          uniqueSelector = `#${el.id}`;
+        } else if (el.className) {
+          const classes = Array.from(el.classList).join('.');
+          uniqueSelector = `${el.tagName.toLowerCase()}.${classes}`;
+        } else {
+          uniqueSelector = el.tagName.toLowerCase();
+        }
+
+        elements.push({
+          index: index,
+          tagName: el.tagName.toLowerCase(),
+          type: el.type || null,
+          id: el.id || null,
+          className: el.className || null,
+          name: el.name || null,
+          value: el.value || null,
+          text: el.textContent?.trim().substring(0, 100) || null,
+          href: el.href || null,
+          selector: uniqueSelector,
+          xpath: getXPath(el),
+          visible: rect.width > 0 && rect.height > 0,
+          position: {
+            x: rect.x,
+            y: rect.y,
+            width: rect.width,
+            height: rect.height
+          }
+        });
+      });
+
+      function getXPath(element) {
+        if (element.id) {
+          return `//*[@id="${element.id}"]`;
+        }
+        if (element === document.body) {
+          return '/html/body';
+        }
+        let ix = 0;
+        const siblings = element.parentNode?.childNodes || [];
+        for (let i = 0; i < siblings.length; i++) {
+          const sibling = siblings[i];
+          if (sibling === element) {
+            return getXPath(element.parentNode) + '/' + element.tagName.toLowerCase() + '[' + (ix + 1) + ']';
+          }
+          if (sibling.nodeType === 1 && sibling.tagName === element.tagName) {
+            ix++;
+          }
+        }
+        return '';
+      }
+
+      return elements;
+    });
+
+    const result = {
+      success: true,
+      url: page.url(),
+      title: await page.title(),
+      elementCount: elements.length,
+      elements: elements
+    };
+
+    if (args.output) {
+      await fs.writeFile(args.output, JSON.stringify(result, null, 2));
+      outputJSON({
+        success: true,
+        output: args.output,
+        elementCount: elements.length
+      });
+    } else {
+      outputJSON(result);
+    }
+
+    if (args.close !== 'false') {
+      await closeBrowser();
+    }
+  } catch (error) {
+    outputError(error);
+  }
+}
+
+snapshot();