fix(PrismCode): throw error on non-string code (#638)

Author: tenphi

.changeset/silly-rocks-breathe.md

@@ -0,0 +1,5 @@
+---
+'@cube-dev/ui-kit': patch
+---
+
+Throw an error if code prop in PrismCode is not a string and not falsy.

src/components/content/PrismCode/PrismCode.tsx

@@ -80,6 +80,12 @@ export interface CubePrismCodeProps extends ContainerStyleProps {
 function PrismCode(props: CubePrismCodeProps, ref) {
   let { code, language = 'javascript', ...otherProps } = props;
 
+  if (typeof code !== 'string' && code) {
+    throw new Error(
+      'UIKit: code prop should be a string in PrismCode. Found: ' + typeof code,
+    );
+  }
+
   const isDiff = isDiffCode(code || '');
 
   useEffect(() => {