Disable @typescript-eslint/no-unsafe-declaration-merging. It came in

kategengler · kategengler · commit 4680ca3de67b · 2025-03-04T21:26:39.000-05:00
between v5 and v8 of the eslint plugin.
diff --git a/eslint.config.mjs b/eslint.config.mjs
@@ -135,6 +135,7 @@ export default [
 
       // TODO: Disabled when upgrading typescript-eslint from 5 to 8
       '@typescript-eslint/no-unsafe-function-type': 'off',
+      '@typescript-eslint/no-unsafe-declaration-merging': 'off',
     },
   },
   {

Original file line number	Diff line number	Diff line change
`@@ -135,6 +135,7 @@ export default [`
`135`	`135`
`136`	`136`	`// TODO: Disabled when upgrading typescript-eslint from 5 to 8`
`137`	`137`	`'@typescript-eslint/no-unsafe-function-type': 'off',`
	`138`	`+ '@typescript-eslint/no-unsafe-declaration-merging': 'off',`
`138`	`139`	`},`
`139`	`140`	`},`
`140`	`141`	`{`