Function buildRNMaps

src/resolution/frameworks/react-native.ts:263–358

(context: ResolutionContext)

]);

function buildRNMaps(context: ResolutionContext): { byJsName: Map<string, NativeMethod[]> } {
  const cached = nativeMethodMaps.get(context);
  if (cached) return cached;

  const byJsName = new Map<string, NativeMethod[]>();
  const allFiles = context.getAllFiles();
  // Pre-index native methods by name for fast lookup when matching to
  // their bridge exports.
  const objcMethodsByFirstKw = new Map<string, Node[]>();
  const jvmMethodsByName = new Map<string, Node[]>();
  for (const node of context.getNodesByKind('method')) {
    if (node.language === 'objc') {
      const firstKw = node.name.includes(':') ? node.name.split(':')[0] : node.name;
      if (firstKw) {
        const arr = objcMethodsByFirstKw.get(firstKw);
        if (arr) arr.push(node);
        else objcMethodsByFirstKw.set(firstKw, [node]);
      }
    } else if (node.language === 'java' || node.language === 'kotlin') {
      const arr = jvmMethodsByName.get(node.name);
      if (arr) arr.push(node);
      else jvmMethodsByName.set(node.name, [node]);
    }
  }

  for (const file of allFiles) {
    // Legacy bridge — ObjC side.
    if (file.endsWith('.m') || file.endsWith('.mm')) {
      const source = context.readFile(file);
      if (!source) continue;
      const className = findObjcClassName(source);
      const exports = parseObjcRNExports(source, className);
      for (const exp of exports) {
        if (RN_EMITTER_BUILTINS.has(exp.jsName)) continue;
        // Resolve to the native node by selector first-keyword. Multiple
        // ObjC methods may share a first keyword across modules; filter by
        // file path to attribute the export to this module's
        // implementation file.
        const candidates = objcMethodsByFirstKw.get(exp.nativeSelectorFirstKw) ?? [];
        const node = candidates.find((c) => c.filePath === file) ?? candidates[0];
        if (!node) continue;
        const entry: NativeMethod = { moduleName: exp.moduleName, jsName: exp.jsName, node };
        const arr = byJsName.get(exp.jsName);
        if (arr) arr.push(entry);
        else byJsName.set(exp.jsName, [entry]);
      }
    }

    // Legacy bridge — Java/Kotlin side.
    if (file.endsWith('.java') || file.endsWith('.kt')) {
      const source = context.readFile(file);
      if (!source) continue;
      const exports = parseJvmRNExports(source);
      for (const exp of exports) {
        if (RN_EMITTER_BUILTINS.has(exp.jsName)) continue;
        const candidates = jvmMethodsByName.get(exp.jsName) ?? [];
        const node = candidates.find((c) => c.filePath === file) ?? candidates[0];
        if (!node) continue;