Function extractFromSource

src/extraction/tree-sitter.ts:5787–5867

(
  filePath: string,
  source: string,
  language?: Language,
  frameworkNames?: string[]
)

 * Their nodes/references/errors are merged into the returned result.
 */
export function extractFromSource(
  filePath: string,
  source: string,
  language?: Language,
  frameworkNames?: string[]
): ExtractionResult {
  const detectedLanguage = language || detectLanguage(filePath, source);
  const fileExtension = path.extname(filePath).toLowerCase();

  let result: ExtractionResult;

  // Use custom extractor for Svelte
  if (detectedLanguage === 'svelte') {
    const extractor = new SvelteExtractor(filePath, source);
    result = extractor.extract();
  } else if (detectedLanguage === 'vue') {
    // Use custom extractor for Vue
    const extractor = new VueExtractor(filePath, source);
    result = extractor.extract();
  } else if (detectedLanguage === 'astro') {
    // Use custom extractor for Astro (frontmatter + template delegation)
    const extractor = new AstroExtractor(filePath, source);
    result = extractor.extract();
  } else if (detectedLanguage === 'liquid') {
    // Use custom extractor for Liquid
    const extractor = new LiquidExtractor(filePath, source);
    result = extractor.extract();
  } else if (detectedLanguage === 'razor') {
    // Use custom extractor for ASP.NET Razor (.cshtml) / Blazor (.razor) markup
    const extractor = new RazorExtractor(filePath, source);
    result = extractor.extract();
  } else if (detectedLanguage === 'xml') {
    // Custom extractor for MyBatis mapper XML. Non-mapper XML returns just a
    // file node so the watcher tracks it without emitting symbols.
    const extractor = new MyBatisExtractor(filePath, source);
    result = extractor.extract();
  } else if (isFileLevelOnlyLanguage(detectedLanguage)) {
    // No symbol extraction at this stage — files are tracked at the file-record
    // level only. Framework extractors (Drupal routing yml, Spring `@Value`
    // resolution against application.yml/application.properties) run later and
    // add per-file nodes/references when they apply.
    result = { nodes: [], edges: [], unresolvedReferences: [], errors: [], durationMs: 0 };
  } else if (
    detectedLanguage === 'pascal' &&
    (fileExtension === '.dfm' || fileExtension === '.fmx')
  ) {
    // Use custom extractor for DFM/FMX form files
    const extractor = new DfmExtractor(filePath, source);
    result = extractor.extract();
  } else {
    const extractor = new TreeSitterExtractor(filePath, source, detectedLanguage);
    result = extractor.extract();
  }

  // Framework-specific extraction (routes, middleware, etc.)
  if (frameworkNames && frameworkNames.length > 0) {
    const allResolvers = getAllFrameworkResolvers();
    const applicable = getApplicableFrameworks(