From 8c4203dc72cc2659044941cdcdfdf96667b53987 Mon Sep 17 00:00:00 2001
From: Lucas Beiknejad <lucas@beiknejad.dk>
Date: Fri, 24 Jul 2026 10:06:42 +0200
Subject: [PATCH] Show points of inconsistency in error message to easier find
 inconsistencies in migration_ids

---
 index.js | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 5ef5faa..ef80b30 100644
--- a/index.js
+++ b/index.js
@@ -20,8 +20,19 @@ export default async function({
 
   const latest = migrations[migrations.length - 1]
 
-  if (latest.migration_id !== migrations.length)
-    throw new Error('Inconsistency in migration numbering')
+  if (latest.migration_id !== migrations.length) {
+    let numbers = []
+
+    for (const [i, m] of migrations.entries()) {
+      if (i === 0 || i + 1 === migrations.length)
+        continue
+
+      if (m.migration_id + 1 !== migrations[i + 1].migration_id)
+        numbers.push(m.migration_id)
+    }
+
+    throw new Error('Inconsistency in migration numbering at: ' + numbers.map(x => x).join(', '))
+  }
 
   await ensureMigrationsTable()