removing dependency on filter-obj

jest.config.js

@@ -1,9 +1,7 @@
 /* eslint-env node */
-const esModules = ['filter-obj'].join('|');
 
 module.exports = {
   roots: ['<rootDir>/src'],
   preset: 'ts-jest/presets/js-with-ts',
   testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$',
-  transformIgnorePatterns: [`node_modules/(?!${esModules})`],
 };

package.json

@@ -65,7 +65,6 @@
   "dependencies": {
     "aws-sdk": "^2.678.0",
     "axios": "^0.27.0",
-    "filter-obj": "^3.0.0",
     "jest-diff": "^29.0.0",
     "uuid": "^9.0.0"
   },

src/common/dynamoDb.ts

@@ -1,4 +1,3 @@
-import filterObject from 'filter-obj';
 import { AttributeMap } from 'aws-sdk/clients/dynamodb';
 import { ICommonProps } from './';
 
@@ -8,6 +7,29 @@ export interface IDynamoDbProps extends ICommonProps {
 
 export const expectedProps = ['region', 'table', 'key'];
 
+type predicate =  (key: any, value: any, object: any) => boolean | Array<any>
+
+const filterObject = (
+  object: AttributeMap,
+  predicate: predicate,
+) => {
+  const result = {};
+  const isArray = Array.isArray(predicate);
+
+  for (const [key, value] of Object.entries(object)) {
+    if (isArray ? predicate.includes(key) : predicate(key, value, object)) {
+      Object.defineProperty(result, key, {
+        value,
+        writable: true,
+        enumerable: true,
+        configurable: true,
+      });
+    }
+  }
+
+  return result;
+};
+
 export const removeKeysFromItemForNonStrictComparison = (
   received: AttributeMap,
   expected: AttributeMap,