refactor: update circleci config

Author: satya164

templates/common/$.circleci/config.yml

@@ -1,17 +1,23 @@
-version: 2
+version: 2.1
 
-defaults: &defaults
-  docker:
-    - image: circleci/node:10
-  working_directory: ~/project
+executors:
+  default:
+    docker:
+      - image: circleci/node:10
+    working_directory: ~/project
+
+commands:
+  attach_project:
+    steps:
+      - attach_workspace:
+          at: ~/project
 
 jobs:
   install-dependencies:
-    <<: *defaults
+    executor: default
     steps:
       - checkout
-      - attach_workspace:
-          at: ~/project
+      - attach_project
       - restore_cache:
           keys:
             - dependencies-{{ checksum "package.json" }}
@@ -20,9 +26,11 @@ jobs:
           keys:
             - dependencies-example-{{ checksum "example/package.json" }}
             - dependencies-example-
-      - run: |
-          yarn install --cwd example --frozen-lockfile
-          yarn install --frozen-lockfile
+      - run:
+          name: Install dependencies
+          command: |
+            yarn install --cwd example --frozen-lockfile
+            yarn install --frozen-lockfile
       - save_cache:
           key: dependencies-{{ checksum "package.json" }}
           paths: node_modules
@@ -32,38 +40,47 @@ jobs:
       - persist_to_workspace:
           root: .
           paths: .
+
   lint:
-      <<: *defaults
-      steps:
-        - attach_workspace:
-            at: ~/project
-        - run: |
+    executor: default
+    steps:
+      - attach_project
+      - run:
+          name: Lint files
+          command: |
             yarn lint
+
   typescript:
-      <<: *defaults
-      steps:
-        - attach_workspace:
-            at: ~/project
-        - run: yarn typescript
+    executor: default
+    steps:
+      - attach_project
+      - run:
+          name: Typecheck files
+          command: |
+            yarn typescript
+
   unit-tests:
-      <<: *defaults
-      steps:
-        - attach_workspace:
-            at: ~/project
-        - run: yarn test --coverage
-        - store_artifacts:
-            path: coverage
-            destination: coverage
-  build-package:
-      <<: *defaults
-      steps:
-        - attach_workspace:
-            at: ~/project
-        - run: yarn prepare
+    executor: default
+    steps:
+      - attach_project
+      - run:
+          name: Run unit tests
+          command: |
+            yarn test --coverage
+      - store_artifacts:
+          path: coverage
+          destination: coverage
 
+  build-package:
+    executor: default
+    steps:
+      - attach_project
+      - run:
+          name: Build package
+          command: |
+            yarn prepare
 
 workflows:
-  version: 2
   build-and-test:
     jobs:
       - install-dependencies

templates/cpp-library/ios/<%= project.name %>.mm

@@ -5,6 +5,7 @@ @implementation <%= project.name %>
 RCT_EXPORT_MODULE()
 
 // Example method for C++
+// See the implementation of the example module in the `cpp` folder
 RCT_EXPORT_METHOD(multiply:(nonnull NSNumber*)a withB:(nonnull NSNumber*)b
                   withResolver:(RCTPromiseResolveBlock)resolve
                   withReject:(RCTPromiseRejectBlock)reject)