add notEmpty

Author: timble-one

src/index.ts

@@ -1 +1 @@
-export {processIfPresent, ifPresent, apply} from './util.js'
+export {processIfPresent, ifPresent, apply, notEmpty} from './util.js'

src/util.ts

@@ -9,3 +9,7 @@ export const apply = <T, R>
     (v: T, callback: (v: T) => R)
     : R =>
     callback(v)
+
+export function notEmpty<TValue>(value: TValue | null | undefined): value is TValue {
+    return value !== null && value !== undefined;
+}