var isReactRefreshBoundary = function()

in packages/metro-runtime/src/polyfills/require.js [833:859]

• 25 lines of code
• 10 McCabe index (conditional complexity)

  var isReactRefreshBoundary = function (Refresh, moduleExports): boolean {
    if (Refresh.isLikelyComponentType(moduleExports)) {
      return true;
    }
    if (moduleExports == null || typeof moduleExports !== 'object') {
      // Exit if we can't iterate over exports.
      return false;
    }
    let hasExports = false;
    let areAllExportsComponents = true;
    for (const key in moduleExports) {
      hasExports = true;
      if (key === '__esModule') {
        continue;
      }
      const desc = Object.getOwnPropertyDescriptor(moduleExports, key);
      if (desc && desc.get) {
        // Don't invoke getters as they may have side effects.
        return false;
      }
      const exportValue = moduleExports[key];
      if (!Refresh.isLikelyComponentType(exportValue)) {
        areAllExportsComponents = false;
      }
    }
    return hasExports && areAllExportsComponents;
  };