perf: smart pre-navigation — skip redundant nav + remove 2s wait#507
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perf: smart pre-navigation — skip redundant nav + remove 2s wait#507
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…oded 2s wait - Add `getCurrentUrl()` to IPage, Page, and CDPPage to check current browser URL - Skip pre-navigation entirely if the browser is already on the target domain - Remove the hardcoded `page.wait(2)` after pre-navigation — `page.goto()` already includes smart DOM-settle detection via `waitForDomStable`, making the fixed 2-second sleep redundant - Saves ~2s per browser command in the common case (consecutive commands on the same site), and ~1-2s even on cold navigation
For page.wait(N) where N >= 1 second, use DOM MutationObserver-based stability detection instead of a fixed sleep. The original wait time becomes a hard cap, but the call returns as soon as the DOM stops mutating (500ms quiet period). This benefits ~200 hardcoded sleep calls across ~40 adapters without changing any adapter code. A typical page.wait(5) now completes in <1s when the page is already stable, instead of always waiting 5s. Short waits (< 1s) are kept as fixed sleeps — these are typically UI animation delays or anti-bot throttling where DOM-ready is irrelevant.
Replace the sendCommand('exec', 'window.location.href') call with a
local _lastUrl field set during goto(). This eliminates a daemon HTTP
round-trip for the domain check, making isAlreadyOnDomain() zero-cost.
On fresh tabs (about:blank), _lastUrl is null so we correctly fall
through to navigation — no special-casing needed.
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Summary
page.wait(2)after pre-navigation —page.goto()already includes smart DOM-settle detection viawaitForDomStable, making the fixed 2-second sleep redundantgetCurrentUrl()toIPage,Page, andCDPPagefor domain detectionPerformance Impact
wait(2), rely on existingwaitForDomStable)Test plan
npx tsc --noEmitpassesgetCurrentUrl()returnsnullgracefully on error (no new failure modes)isAlreadyOnDomain()falls back tofalseon any exception (safe default)