Function extractSEO

extractSEO(input: DocumentInput): SEOMetadata
Extract SEO metadata from HTML.
Parameters
- input: DocumentInput
  Parsed HTML document or raw HTML string
Returns SEOMetadata
SEO metadata object
Remarks
Extracts standard SEO meta tags including title, description, keywords, and browser-specific configuration. All fields are optional.
Example
```
// With parsed document (recommended for multiple extractions)
const doc = parseHTML(htmlString);
const seo = extractSEO(doc);

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