add config module

src/modules/config/utils.ts

@@ -0,0 +1,27 @@
+import { isNil } from 'lodash';
+
+import { ConnectionOption, ConnectionRst } from './types';
+
+export const createConnectionOptions = <T extends RecordAny>(
+    config: ConnectionOption<T> | ConnectionOption<T>[],
+) => {
+    const options = (
+        Array.isArray(config) ? config : [{ ...config, name: 'default' }]
+    ) as ConnectionRst<T>;
+
+    if (options.length <= 0) {
+        return undefined;
+    }
+
+    const names = options.map(({ name }) => name);
+    if (!names.includes('default')) {
+        options[0].name = 'default';
+    }
+
+    return options
+        .filter(({ name }) => !isNil(name))
+        .reduce((o, n) => {
+            const oldNames = o.map(({ name }) => name) as string[];
+            return oldNames.includes(n.name) ? o : [...o, n];
+        }, []);
+};