+function prepareIcu (icu: string) {
+ let alreadyWarned = false
+
+ try {
+ const msg = new IntlMessageFormat(icu, $localize.locale)
+
+ return (context: { [id: string]: number | string }, fallback: string) => {
+ try {
+ return msg.format(context) as string
+ } catch (err) {
+ if (!alreadyWarned) logger.warn(`Cannot format ICU ${icu}.`, err)
+
+ alreadyWarned = true
+ return fallback
+ }
+ }
+ } catch (err) {
+ logger.warn(`Cannot build intl message ${icu}.`, err)
+
+ return (_context: unknown, fallback: string) => fallback
+ }
+}
+