• npm i
• node barrel-finder "<GLOBLIKE_PATH_TO_START>" "<GLOBLIKE_MASK_TO_IGNORE>"
• Example node barrel-finder "../libs/**/*.ts" "../libs/**/*.index.ts"
• Note! path should be wrapped into quotes

Script will parse only typescript files, so you should provide path like this: ../../libs/**/*.ts (glob-like path)

In program you may see this line: const source = program.getSourceFile(file);

• source is for SourceFileObject object (from Typescript API) that include Map called resolveModules.
• resolveModules contains metadata about each module (file that you imported)
• Example import without barrel:

  {
      resolveModules: {
          key: './simple-request.dto',
          value: {
              originalPath: undefined, 
              extension: '.ts', 
              isExternalLibraryImport: false, 
              packageId: undefined,
              resolvedFileName: '/path/to/libs/http-lib/data/requests/simple-request.dto.ts', 
          }
      } as Map<string, any>
  }

• Example import WITH barrel:

  {
      resolveModules: {
          key: '../requests',
          value: {
              originalPath: undefined, 
              extension: '.ts', 
              isExternalLibraryImport: false, 
              packageId: undefined,
              resolvedFileName: '/path/to/libs/http-lib/data/requests/index.ts', // This is our barrel file, we can use it for mark
          }
      } as Map<string, any>
  }

If you develop some angular libraries with ng-packagr you may got a looooot of errors when you using barrel files. This script will help you to find imports from barrels!