From 9bd675692dbd7457c6d05070b40e1cd1c5a81174 Mon Sep 17 00:00:00 2001
From: Philipp Kunz <gitlab@philkunz.com>
Date: Wed, 30 Jun 2021 00:30:11 +0200
Subject: [PATCH] fix(core): update

---
 test/test.ts | 10 ++++++++--
 ts/index.ts  | 13 ++++++++++---
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/test/test.ts b/test/test.ts
index 0e830c3..8e14bd4 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -1,8 +1,14 @@
 import { expect, tap } from '@pushrocks/tapbundle';
 import * as smartarray from '../ts/index';
 
-tap.test('first test', async () => {
-  console.log(smartarray.standardExport);
+tap.test('should filter', async () => {
+  const originalArray = [1,2,3,4,5,6];
+  expect(originalArray).to.contain(2);
+  expect(originalArray).to.contain(3);
+  const result = await smartarray.filter(originalArray, async itemArg => itemArg !== 3);
+  expect(originalArray).to.contain(2);
+  expect(result).to.not.contain(3);
+  console.log(result);
 });
 
 tap.start();
diff --git a/ts/index.ts b/ts/index.ts
index c51187f..50109ea 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,3 +1,10 @@
-import * as plugins from './smartarray.plugins';
-
-export let standardExport = 'Hi there! :) This is an exported string';
+export const filter = async<T>(arrayArg: T[], filterFunction: (itemArg: T) => Promise<boolean>): Promise<T[]> => {
+  const returnArray: T[] = [];
+  for (const itemArg of arrayArg) {
+    const filterResult = await filterFunction(itemArg);
+    if (filterResult) {
+      returnArray.push(itemArg);
+    }
+  }
+  return returnArray;
+}
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