message: Ignore private packages in typetests
  Private packages aren't published so it doesn't make sense to run typetests on them.
diff: @@ -27,6 +27,7 @@ interface PackageJson{
  name:string,
  version: string,
  main: string | undefined,
  + private: boolean | undefined,
  devDependencies: Record<string, string>;
  typeValidation?: {
  version: string,
  @@ -80,6 +81,8 @@ export async function getAndUpdatePackageDetails(packageDir: string, updateOptio
  return {skipReason: "Skipping package: @fluid-internal "}
  }else if( packageDetails.pkg.main?.endsWith("index.js") !== true){
  return {skipReason: "Skipping package: no index.js in main property"}
  + }else if(packageDetails.pkg.private === true){
  + return {skipReason: "Skipping package: private package"}
  }else if(packageDetails.pkg.typeValidation?.disabled === true){
  return {skipReason: "Skipping package: type validation disabled"}
  }
  