Index Export

index.ts is recognized by Node as a default export reference when a directory path is referenced.

// domainTopLevelDir/<subDir>/index.ts
export * from "./someDirName";
export * from "./anotherDirName";
export * from "./anotherModule";

// domainTopLevelDir/index.ts
import * as someName from "./someDirName";
import * as otherName from "./anotherDirName";
import * as anotherName from "./anotherModule";

export {
  // exported variables from each folders are all exported from one location
  someName,
  otherName,
  anotherName,
};

Directory Structure

domainTopLevelDir
|- index.ts
|-someDirName
  |- index.ts
|-someOtherDirectory
  |- index.ts
|-anotherFolder
  |- index.ts