Index Export

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

// domainTopLevelDirectory/someSubDirectory/index.ts
export * from "./someFileName";
export * from "./anotherFileName";
export * from "./anotherModule";

// domainTopLevelDirectory/index.ts
import * as someName from "./someSubDirectory";
import * as otherName from "./someOtherDirectory";
import * as anotherName from "./anotherFolder";

export {
  // exported variables from someFileName, anotherFileName, and anotherModule are all exported
  someName,
  otherName,
  anotherName,
};

Directory Structure

domainTopLevelDirectory
|-someSubDirectory
  |- index.ts
|-someOtherDirectory
  |- index.ts
|-anotherFolder
  |- index.ts