Spacing theme.json - check that the first item in the units array is …

…defined before trying to assign its value (#56306)
WordPress · Nov 21, 2023 · aa91684 · aa91684
1 parent 68b0d5b
commit aa91684
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/...block-editor/src/components/spacing-sizes-control/input-controls/spacing-input-control.js b/...block-editor/src/components/spacing-sizes-control/input-controls/spacing-input-control.js
@@ -139,7 +139,7 @@ export default function SpacingInputControl( {
 		useMemo(
 			() => parseQuantityAndUnitFromRawValue( currentValue ),
 			[ currentValue ]
-		)[ 1 ] || units[ 0 ].value;
+		)[ 1 ] || units[ 0 ]?.value;
 
 	const setInitialValue = () => {
 		if ( value === undefined ) {

diff --git a/schemas/json/theme.json b/schemas/json/theme.json
@@ -364,7 +364,8 @@
 							"items": {
 								"type": "string"
 							},
-							"default": [ "px", "em", "rem", "vh", "vw", "%" ]
+							"default": [ "px", "em", "rem", "vh", "vw", "%" ],
+							"minItems": 1
 						},
 						"customSpacingSize": {
 							"description": "Allow users to set custom space sizes.",