Add Impure Versions to filterby, groupby and orderby

README.md

@@ -44,8 +44,11 @@
     - [some](#some)
     - [sample](#sample)
     - [groupBy](#groupby)
+    - [groupByImpure](#groupbyimpure)
     - [filterBy](#filterby)
+    - [filterByImpure](#filterbyimpure)
     - [orderBy](#orderby)
+    - [orderByImpure](#orderbyimpure)
  - [Object](#object)
     - [keys](#keys)
     - [values](#values)
@@ -614,6 +617,12 @@ this.arrayNestedObject = [
 <!-- Output:{foo: [{id: 1, prop: {deep: foo}}, {id: 3, prop: {deep: foo}}], bar: [{id: 2, prop: {deep: bar}}, {id: 4, prop: {deep: bar}}]}" -->
 ```
 
+## groupByImpure
+
+Identical to groupBy pipe, the only difference is that it's an impure pipe.
+
+Pure pipes: https://angular.io/guide/pipes#pure-pipes
+
 ### filterBy
 
 Returns object array of grouped by items by discriminator
@@ -643,6 +652,12 @@ this.users = [
 <!-- Output: "[{id: 1, first_name: 'John', last_name: 'Doe', work: { company: 'Foo Tech', previous_company: '' }}]" -->
 ```
 
+## filterByImpure
+
+Identical to filterBy pipe, the only difference is that it's an impure pipe.
+
+Pure pipes: https://angular.io/guide/pipes#pure-pipes
+
 ### orderBy
 
 Returns ordered array by configuration 
@@ -689,6 +704,12 @@ const deepObj = [
 <!-- Output: [{id: 1, ...}, {id: 3, ...}, {id: 2, ...}, {id: 4, ...}] -->
 ```
 
+## orderByImpure
+
+Identical to orderBy pipe, the only difference is that it's an impure pipe.
+
+Pure pipes: https://angular.io/guide/pipes#pure-pipes
+
 ## Object
 
 ### keys

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ngx-pipes",
-  "version": "1.6.2",
+  "version": "1.6.3",
   "author": "Dan Revah",
   "description": "Useful angular2 pipes",
   "license": "MIT",

src/app/pipes/array/filter-by-impure.ts

@@ -0,0 +1,5 @@
+import {Pipe} from '@angular/core';
+import {FilterByPipe} from './filter-by';
+
+@Pipe({name: 'filterByImpure', pure: false})
+export class FilterByImpurePipe extends FilterByPipe {}

src/app/pipes/array/filter-by.ts

@@ -1,7 +1,7 @@
 import {PipeTransform, Pipe} from '@angular/core';
 import {isString, extractDeepPropertyByMapKey, isNumberFinite, isBoolean, isUndefined} from '../helpers/helpers';
 
-@Pipe({name: 'filterBy', pure: false})
+@Pipe({name: 'filterBy'})
 export class FilterByPipe implements PipeTransform {
 
   transform(input: any, props: Array<string>, search: any = '', strict: boolean = false): any[] {

src/app/pipes/array/group-by-impure.ts

@@ -0,0 +1,5 @@
+import {Pipe} from '@angular/core';
+import {GroupByPipe} from './group-by';
+
+@Pipe({name: 'groupByImpure', pure: false})
+export class GroupByImpurePipe extends GroupByPipe {}

src/app/pipes/array/order-by-impure.ts

@@ -0,0 +1,5 @@
+import {Pipe} from '@angular/core';
+import {OrderByPipe} from './order-by';
+
+@Pipe({name: 'orderByImpure'})
+export class OrderByImpurePipe extends OrderByPipe {}

src/app/pipes/array/order-by.ts

@@ -1,7 +1,7 @@
 import {PipeTransform, Pipe} from '@angular/core';
 import {isString, extractDeepPropertyByMapKey, isUndefined} from '../helpers/helpers';
 
-@Pipe({name: 'orderBy', pure: false})
+@Pipe({name: 'orderBy'})
 export class OrderByPipe implements PipeTransform {
 
   transform(input: any, config?: any): any[] {