[No Ticket] Add onNonNull

LiveIntent · Jan 22, 2024 · e5253b5 · e5253b5
1 parent dff066c
commit e5253b5
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/utils.ts b/src/utils.ts
@@ -5,6 +5,10 @@ export const UUID = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12
 const uuidRegex = new RegExp(`^${UUID}$`, 'i')
 const hasTrim = !!String.prototype.trim
 
+export function onNonNull<A, B>(value: A, fn: (value: NonNullable<A>) => B): null | undefined | B {
+  return value != null ? fn(value) : (value as null | undefined)
+}
+
 export function safeToString(value: unknown): string {
   return typeof value === 'object' ? JSON.stringify(value) : ('' + value)
 }