init

.opencode/skills/chrome-devtools/scripts/evaluate.js

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+#!/usr/bin/env node
+/**
+ * Execute JavaScript in page context
+ * Usage: node evaluate.js --script "document.title" [--url https://example.com]
+ */
+import { getBrowser, getPage, closeBrowser, disconnectBrowser, parseArgs, outputJSON, outputError } from './lib/browser.js';
+
+async function evaluate() {
+  const args = parseArgs(process.argv.slice(2));
+
+  if (!args.script) {
+    outputError(new Error('--script is required'));
+    return;
+  }
+
+  try {
+    const browser = await getBrowser({
+      headless: args.headless
+    });
+
+    const page = await getPage(browser);
+
+    // Navigate if URL provided
+    if (args.url) {
+      await page.goto(args.url, {
+        waitUntil: args['wait-until'] || 'networkidle2'
+      });
+    }
+
+    const result = await page.evaluate(async (script) => {
+      // Wrap in async IIFE so user scripts can use await
+      // eslint-disable-next-line no-eval
+      return await eval(`(async () => { return ${script}; })()`);
+    }, args.script);
+
+    outputJSON({
+      success: true,
+      result: result,
+      url: page.url()
+    });
+
+    // Default: disconnect to keep browser running for session persistence
+    // Use --close true to fully close browser
+    if (args.close === 'true') {
+      await closeBrowser();
+    } else {
+      await disconnectBrowser();
+    }
+    process.exit(0);
+  } catch (error) {
+    outputError(error);
+    process.exit(1);
+  }
+}
+
+evaluate();