Add exampleReactNativeVersion option

defaults to [email protected] for now

(use exampleReactNativeVersion="react-native@latest" to generate
 example with the most current react-native release)

Author: Christopher J. Brody

README.md

@@ -86,6 +86,7 @@ Options:
   --use-cocoapods                           Generate a library with a sample podspec and third party pod usage example
   --generate-example                        Generate an example project and links the library module to it, requires both react-native-cli and yarn to be installed globally
   --example-name <exampleName>              Name for the example project (default: `example`)
+  --example-react-native-version <version>  React Native version for the generated example project (default: `[email protected]`)
   -h, --help                                output usage information
 ```
 
@@ -119,6 +120,7 @@ createLibraryModule({
   view: Boolean, /* Generate the module as a very simple native view component (Default: false) */
   generateExample: Boolean, /* Generate an example project and links the library module to it, requires both react-native-cli and yarn to be installed globally (Default: false) */
   exampleName: String, /* Name for the example project (Default: `example`) */
+  exampleReactNativeVersion: String, /* React Native version for the generated example project (Default: `[email protected]`) */
 }
 ```
 

command.js

@@ -109,5 +109,9 @@ ${postCreateInstructions(createOptions)}`);
     command: '--example-name [exampleName]',
     description: 'Name for the example project',
     default: 'example',
+  }, {
+    command: '--example-react-native-version [exampleReactNativeVersion]',
+    description: 'React Native version for the generated example project',
+    default: '[email protected]',
   }]
 };

lib.js

@@ -16,6 +16,7 @@ const DEFAULT_LICENSE = 'Apache-2.0';
 const DEFAULT_USE_COCOAPODS = false;
 const DEFAULT_GENERATE_EXAMPLE = false;
 const DEFAULT_EXAMPLE_NAME = 'example';
+const DEFAULT_EXAMPLE_REACT_NATIVE_VERSION = '[email protected]';
 
 const renderTemplateIfValid = (root, template, templateArgs) => {
   const name = template.name(templateArgs);
@@ -49,6 +50,7 @@ const generateWithOptions = ({
   useCocoapods = DEFAULT_USE_COCOAPODS,
   generateExample = DEFAULT_GENERATE_EXAMPLE,
   exampleName = DEFAULT_EXAMPLE_NAME,
+  exampleReactNativeVersion = DEFAULT_EXAMPLE_REACT_NATIVE_VERSION,
 }) => {
   if (packageIdentifier === DEFAULT_PACKAGE_IDENTIFIER) {
     console.warn(`While \`{DEFAULT_PACKAGE_IDENTIFIER}\` is the default package
@@ -145,7 +147,7 @@ const generateWithOptions = ({
   const generateExampleWithName =
     (exampleName) => {
       const exampleReactNativeInitCommand =
-        `react-native init ${exampleName}`;
+        `react-native init ${exampleName} --version ${exampleReactNativeVersion}`;
 
       console.info(
         `CREATE example app with the following command: ${exampleReactNativeInitCommand}`);