Refactored seed files to use programmatic upsert instead of SQL duplicate ignore.

src/utils/upsert.js

@@ -0,0 +1,47 @@
+'use strict';
+
+async function upsert(table, items, duplicatesById, identifier = 'id', knex) {
+    const { insert, update } = items.reduce((acc, item) => {
+        if (duplicatesById[item[identifier]]) {
+            return {
+                ...acc,
+                update: [
+                    ...acc.update,
+                    {
+                        ...duplicatesById[item[identifier]],
+                        ...item,
+                    },
+                ],
+            };
+        }
+
+        return {
+            ...acc,
+            insert: [
+                ...acc.insert,
+                item,
+            ],
+        };
+    },
+    {
+        insert: [],
+        update: [],
+    });
+
+    if (knex) {
+        console.log(`${table}: Inserting ${insert.length}`);
+        console.log(`${table}: Updating ${update.length}`);
+
+        return Promise.all([
+            knex(table).insert(insert),
+            knex.transaction(async trx => Promise.all(update.map(item => trx
+                .where({ id: item.id })
+                .update(item)
+                .into(table)))),
+        ]);
+    }
+
+    return { insert, update };
+}
+
+module.exports = upsert;