From 60c68e07f1cba683c5db9f1fc31557a5a3330aa1 Mon Sep 17 00:00:00 2001
From: Jacob Roberts <jacobdr@gmail.com>
Date: Mon, 15 Apr 2024 00:04:25 -0700
Subject: [PATCH] Export more precise typings for data types. Expose the
 database error so that users can use instanceof checks

---
 src/constants.ts | 6 +++++-
 src/index.ts     | 2 ++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/constants.ts b/src/constants.ts
index 465ebac..4650d9c 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -130,7 +130,9 @@ export const DataTypeOIDs = {
   _varbit: 1563,
   _uuid: 2951,
   _jsonb: 3807,
-};
+} as const;
+
+type INumericDataTypes = (typeof DataTypeOIDs)[keyof typeof DataTypeOIDs];
 
 export const DataTypeNames = {
   [DataTypeOIDs.bool]: 'bool',
@@ -247,4 +249,6 @@ export const DataTypeNames = {
   [DataTypeOIDs._varbit]: '_varbit',
   [DataTypeOIDs._uuid]: '_uuid',
   [DataTypeOIDs._jsonb]: '_jsonb',
+} as const satisfies {
+  [key in INumericDataTypes]: string;
 };
diff --git a/src/index.ts b/src/index.ts
index cbaab5d..3cbe0bd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,5 @@
+export { DatabaseError } from './protocol/database-error.js';
+
 export * from './constants.js';
 export * from './data-type-map.js';
 export * from './types.js';