feat(widgets): ensure passed locale is supported (#3245)

* ensure passed locale is supported

* warn on locale mismatch

* export SUPPORTED_LOCALES

src/lib/components/Error/WidgetsPropsValidator.tsx

+import { SUPPORTED_LOCALES } from 'constants/locales'
 import { WidgetProps } from 'lib/components/Widget'
 import { IntegrationError } from 'lib/errors'
 import { PropsWithChildren, useEffect } from 'react'
@@ -18,5 +19,12 @@ export default function WidgetsPropsValidator(props: PropsWithChildren<WidgetPro
     }
   }, [width])
 
+  const { locale } = props
+  useEffect(() => {
+    if (locale && locale !== 'pseudo' && !SUPPORTED_LOCALES.includes(locale)) {
+      console.warn('Unsupported locale: ', locale)
+    }
+  }, [locale])
+
   return <>{props.children}</>
 }

src/lib/index.tsx

 import Swap, { SwapProps } from './components/Swap'
 import Widget, { WidgetProps } from './components/Widget'
+export { SUPPORTED_LOCALES } from 'constants/locales'
 
 type SwapWidgetProps = SwapProps & WidgetProps