function registerSegment()

in packages/metro-runtime/src/polyfills/require.js [309:335]

• 27 lines of code
• 9 McCabe index (conditional complexity)

function registerSegment(
  segmentId: number,
  moduleDefiner: ModuleDefiner,
  moduleIds: ?$ReadOnlyArray<ModuleID>,
): void {
  moduleDefinersBySegmentID[segmentId] = moduleDefiner;
  if (__DEV__) {
    if (segmentId === 0 && moduleIds) {
      throw new Error(
        'registerSegment: Expected moduleIds to be null for main segment',
      );
    }
    if (segmentId !== 0 && !moduleIds) {
      throw new Error(
        'registerSegment: Expected moduleIds to be passed for segment #' +
          segmentId,
      );
    }
  }
  if (moduleIds) {
    moduleIds.forEach(moduleId => {
      if (!modules[moduleId] && !definingSegmentByModuleID.has(moduleId)) {
        definingSegmentByModuleID.set(moduleId, segmentId);
      }
    });
  }
}