Function getVersionUpgradeData

src/cdk/schematics/ng-update/upgrade-data.ts:74–87

(migration: Migration<UpgradeData>, dataName: T)

 * data portion that is specifically tied to the target version.
 */
export function getVersionUpgradeData<
  T extends keyof UpgradeData,
  U = ValueOfChanges<UpgradeData[T]>,
>(migration: Migration<UpgradeData>, dataName: T): U[] {
  if (migration.targetVersion === null) {
    return [];
  }

  // Note that below we need to cast to `unknown` first TS doesn't infer the type of T correctly.
  return getChangesForTarget<U>(
    migration.targetVersion,
    migration.upgradeData[dataName] as unknown as VersionChanges<U>,
  );
}