feat: version 2 beta

adapters/mongo/utilities.ts

@@ -0,0 +1,43 @@
+import type { Db, WithId } from "mongodb";
+import type { z, ZodObject } from "zod";
+
+/**
+ * Take a list of records and run it through the given zod parser. This
+ * ensures that all the documents in resulting list adheres to the
+ * expected schematics before b eing returned. Any deviation in the list
+ * will result in an internal error being thrown.
+ *
+ * @param parser - Zod parser to run the documents through.
+ */
+export function toParsedRecords<TSchema extends ZodObject>(parser: TSchema): (documents: WithId<object>[]) => z.infer<TSchema>[] {
+  return parser.array().parse;
+}
+
+/**
+ * Take a single nullable document value and run it through the given zod
+ * parser. This ensures that the data adheres to the expected schematics
+ * before being returned. Any deviation in the expected response will result
+ * in an internal error being thrown.
+ *
+ * @param parser - Zod parser to run the document through.
+ */
+export function toParsedRecord<TSchema extends ZodObject>(parser: TSchema): (document: WithId<object> | null) => z.infer<TSchema> | undefined {
+  return function (document) {
+    if (document === null) {
+      return undefined;
+    }
+    return parser.parse(document);
+  };
+}
+
+/**
+ * Get a Set of collections that exists on a given mongo database instance.
+ *
+ * @param db - Mongo database to fetch collection list for.
+ */
+export async function getCollectionsSet(db: Db) {
+  return db
+    .listCollections()
+    .toArray()
+    .then((collections) => new Set(collections.map((c) => c.name)));
+}