do not assume source is an object

RobinMalfait · thecrypticace · RobinMalfait · commit fea40a5d756d · 2025-08-27T17:36:56.000+02:00
Otherwise `Reflect.ownKeys` would crash on non-object values.

Co-Authored-By: Jordan Pittman &lt;thecrypticace@gmail.com&gt;
diff --git a/packages/tailwindcss/src/compat/config/deep-merge.ts b/packages/tailwindcss/src/compat/config/deep-merge.ts
@@ -17,7 +17,7 @@ export function deepMerge<T extends object>(
   type Value = T[Key]
 
   for (let source of sources) {
-    if (source === null || source === undefined) {
+    if (source === null || source === undefined || typeof source !== 'object') {
       continue
     }
 

Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@ export function deepMerge<T extends object>(`
`17`	`17`	`type Value = T[Key]`
`18`	`18`
`19`	`19`	`for (let source of sources) {`
`20`		`- if (source === null \|\| source === undefined) {`
	`20`	`+ if (source === null \|\| source === undefined \|\| typeof source !== 'object') {`
`21`	`21`	`continue`
`22`	`22`	`}`
`23`	`23`