try cp-property-map codemod from ember-3x-codemods (#727)

* [FEAT] Add computed-property property() Modifier codemod

Author: rajasegar

test/fixtures/codemod/latest-node/my-app/app/controllers/application.js

@@ -1,6 +1,7 @@
 import Controller from '@ember/controller';
 import Ember from 'ember';
 import { assign } from '@ember/polyfills';
+import { map } from '@ember/object/computed';
 
 export default Controller.extend({
   fullName: computed('firstName', 'lastName', function() {
@@ -11,6 +12,10 @@ export default Controller.extend({
     return `${this.firstName} ${this.lastName}`;
   },
 
+  friendNames: map('friends', ['nameKey'], function(friend) {
+    return friend[this.nameKey];
+  }),
+
   actions: {
     foo(object) {
       this.doStuff(object);

test/fixtures/codemod/local/my-app/app/controllers/application.js

@@ -1,5 +1,6 @@
 import Ember from 'ember';
 import { merge } from '@ember/polyfills';
+import { map } from '@ember/object/computed';
 
 export default Ember.Controller.extend({
   fullName: computed(function() {
@@ -10,6 +11,10 @@ export default Ember.Controller.extend({
     return `${this.firstName} ${this.lastName}`;
   }).volatile('firstName', 'lastName'),
 
+  friendNames: map('friends', function(friend) {
+    return friend[this.nameKey];
+  }).property('nameKey'),
+
   actions: {
     foo(object) {
       Ember.propertyWillChange(object, 'someProperty');

test/fixtures/codemod/min-node/my-app/app/controllers/application.js

@@ -1,6 +1,7 @@
 import Controller from '@ember/controller';
 import Ember from 'ember';
 import { assign } from '@ember/polyfills';
+import { map } from '@ember/object/computed';
 
 export default Controller.extend({
   fullName: computed('firstName', 'lastName', function() {
@@ -11,6 +12,10 @@ export default Controller.extend({
     return `${this.firstName} ${this.lastName}`;
   },
 
+  friendNames: map('friends', ['nameKey'], function(friend) {
+    return friend[this.nameKey];
+  }),
+
   actions: {
     foo(object) {
       this.doStuff(object);