Function extractAnalytics

extractAnalytics(input: DocumentInput): AnalyticsMetadata
Extract analytics metadata from HTML.
Parameters
- input: DocumentInput
  Parsed HTML document or raw HTML string
Returns AnalyticsMetadata
Analytics metadata
Remarks
Detects analytics service IDs by examining script tags and their content. Only extracts identifiers, does not track or collect user data.
Example
```
// With parsed document (recommended for multiple extractions)
const doc = parseHTML(htmlString);
const analytics = extractAnalytics(doc);

// Or directly with HTML string
const analytics = extractAnalytics(htmlString);
```
- Defined in src/metadata/analytics/extract.ts:34