add server to monorepo.

packages/server/src/lib/Seeder/SeederConfig.ts

@@ -0,0 +1,44 @@
+import { DEFAULT_LOAD_EXTENSIONS, FsMigrations } from './FsMigrations';
+
+const CONFIG_DEFAULT = Object.freeze({
+  extension: 'js',
+  loadExtensions: DEFAULT_LOAD_EXTENSIONS,
+  tableName: 'knex_migrations',
+  schemaName: null,
+  directory: './migrations',
+  disableTransactions: false,
+  disableMigrationsListValidation: false,
+  sortDirsSeparately: false,
+});
+
+export default function getMergedConfig(config, currentConfig) {
+  // config is the user specified config, mergedConfig has defaults and current config
+  // applied to it.
+  const mergedConfig = {
+    ...CONFIG_DEFAULT,
+    ...(currentConfig || {}),
+    ...config,
+  };
+
+  if (
+    config &&
+    // If user specifies any FS related config,
+    // clear specified migrationSource to avoid ambiguity
+    (config.directory ||
+      config.sortDirsSeparately !== undefined ||
+      config.loadExtensions)
+  ) {
+    mergedConfig.migrationSource = null;
+  }
+
+  // If the user has not specified any configs, we need to
+  // default to fs migrations to maintain compatibility
+  if (!mergedConfig.migrationSource) {
+    mergedConfig.migrationSource = new FsMigrations(
+      mergedConfig.directory,
+      mergedConfig.sortDirsSeparately,
+      mergedConfig.loadExtensions
+    );
+  }
+  return mergedConfig;
+}