Changelog

v1.8 – TB support

• TB estimates – Now displays cost for queries that show size in TB (e.g., "1.12 TB" → $7.00)
• Updated selector – Added span.cfc-truncated-text[aria-hidden="true"] for current BigQuery UI
• Unit detection – Parses both GB and TB from the status message and calculates cost accordingly

v1.9 – Robust element finding and duplicate handling

• Multi-strategy selectors – Tries several known selectors with fallback to content-based DOM search for "This query will process"
• Content-based fallback – Uses TreeWalker to find elements by text when selectors fail (resilient to BigQuery UI changes)
• Duplicate handling – When BigQuery renders the estimate in multiple elements, hides or empties extras to prevent double display

v1.10 – Fix duplicate display

• Replace common parent – When multiple elements match, replaces the shared parent container's content so the cost displays once
• Observer during updates – Disconnects MutationObserver while making DOM changes to avoid re-entry/feedback loops
• Leaf-only matching – Filters to innermost elements (excludes parents that contain another match) for precise replacement

Summary: v1.7 used a single selector and MutationObserver. v1.10 adds TB support, resilient element finding with multiple fallbacks, and fixes the duplicate cost display by targeting the common parent container.