Initial commit

node_modules/knex/lib/migrations/migrate/migrator-configuration-merger.js

@@ -0,0 +1,58 @@
+const { FsMigrations } = require('./sources/fs-migrations');
+const Logger = require('../../logger');
+const { DEFAULT_LOAD_EXTENSIONS } = require('../common/MigrationsLoader');
+const defaultLogger = new Logger();
+
+const CONFIG_DEFAULT = Object.freeze({
+  extension: 'js',
+  loadExtensions: DEFAULT_LOAD_EXTENSIONS,
+  tableName: 'knex_migrations',
+  schemaName: null,
+  directory: './migrations',
+  disableTransactions: false,
+  disableMigrationsListValidation: false,
+  sortDirsSeparately: false,
+});
+
+function getMergedConfig(config, currentConfig, logger = defaultLogger) {
+  // config is the user specified config, mergedConfig has defaults and current config
+  // applied to it.
+  const mergedConfig = Object.assign(
+    {},
+    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)
+  ) {
+    if (config.migrationSource) {
+      logger.warn(
+        'FS-related option specified for migration configuration. This resets migrationSource to default FsMigrations'
+      );
+    }
+    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;
+}
+
+module.exports = {
+  getMergedConfig,
+};