Function applyMigrationPlan

packages/migrate/src/node.ts:126–136

(
  plan: MigrationFilePlan,
  options: ApplyMigrationPlanOptions = {}
)

/** Writes the exact transformed bytes contained in an already validated plan. */
export async function applyMigrationPlan(
  plan: MigrationFilePlan,
  options: ApplyMigrationPlanOptions = {}
): Promise<readonly MigratedFile[]> {
  await preflightPlanOutputs(plan, options);
  for (const { outputPath, result } of plan.files) {
    await mkdir(dirname(outputPath), { recursive: true });
    await writeFile(outputPath, result.code, 'utf8');
  }
  return plan.files;
}

async function preflightPlanOutputs(plan: MigrationFilePlan, options: ApplyMigrationPlanOptions): Promise<void> {
  const outputRoot = resolve(plan.outputRoot);