implement select

2021-12-27 00:48:30 -06:00
parent 4f978c101a
commit ceb8e78028
14 changed files with 553 additions and 31 deletions
--- a/helpers/is-instance-of.ts
+++ b/helpers/is-instance-of.ts
@@ -0,0 +1,7 @@
+/**
+ * for narrowing instance types with array.filter
+ */
+export const isInstanceOf =
+  <T>(Constructor: new (...args: any[]) => T) =>
+  (value: unknown): value is T =>
+    value instanceof Constructor