playwriter
Code Issues

add helpful error with extension url when no tabs connected

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This commit is contained in:
Tommy D. Rossi
2025-11-24 18:30:18 +01:00
parent 86cc3ce10e
commit a4eaffd25a
1 changed files with 12 additions and 5 deletions
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playwriter/src/mcp.ts
+12 -5
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@@ -79,6 +79,7 @@ const browserLogs: Map<string, string[]> = new Map()
const MAX_LOGS_PER_PAGE = 5000
const RELAY_PORT = 19988
const NO_TABS_ERROR = `No browser tabs are connected. Please install and enable the Playwriter extension on at least one tab: https://chromewebstore.google.com/detail/playwriter-mcp/jfeammnjpkecdekppnclgkkffahnhfhe`
async function isPortTaken(port: number): Promise<boolean> {
try {
@@ -133,9 +134,12 @@ async function ensureConnection(): Promise<{ browser: Browser; page: Page }> {
})
const pages = context.pages()
const page = pages.length > 0 ? pages[0] : await context.newPage()
if (pages.length === 0) {
throw new Error(NO_TABS_ERROR)
}
const page = pages[0]
// Set up console listener for all existing pages (including the one we might have just created)
// Set up console listener for all existing pages
context.pages().forEach(p => setupPageConsoleListener(p))
state.browser = browser
@@ -231,7 +235,7 @@ async function getCurrentPage(timeout = 5000) {
}
}
throw new Error('No page available')
throw new Error(NO_TABS_ERROR)
}
async function resetConnection(): Promise<{ browser: Browser; page: Page; context: BrowserContext }> {
@@ -265,9 +269,12 @@ async function resetConnection(): Promise<{ browser: Browser; page: Page; contex
})
const pages = context.pages()
const page = pages.length > 0 ? pages[0] : await context.newPage()
if (pages.length === 0) {
throw new Error(NO_TABS_ERROR)
}
const page = pages[0]
// Set up console listener for all existing pages (including the one we might have just created)
// Set up console listener for all existing pages
context.pages().forEach(p => setupPageConsoleListener(p))
state.browser = browser