Add a --basic flag to the create-react-admin package to skip interactive steps

packages/create-react-admin/src/cli.tsx

@@ -16,17 +16,22 @@ const cli = meow(
 	  --auth-provider  Set the auth provider to use ("local-auth-provider" or "none")
 	  --resource       Add a resource that will be initialized with guessers (can be used multiple times). Set to "skip" to bypass the interactive resource step.
 	  --install        Set the package manager to use for installing dependencies ("yarn", "npm" or "skip" to bypass the interactive install step)
+	  --basic          Skip all the interactive steps and create a basic app with no data provider, no auth provider, no resources and no install step
 
     Examples
 	  $ create-admin-app my-admin
 	  $ create-admin-app my-admin --data-provider ra-data-json-server --auth-provider local-auth-provider --resource posts --resource comments --install npm
+	  $ create-admin-app my-admin --basic
 `,
     {
         flags: {
             help: {
                 type: 'boolean',
                 alias: 'h',
             },
+            basic: {
+                type: 'boolean',
+            },
             dataProvider: {
                 type: 'string',
                 choices: SupportedDataProviders.map(choice => choice.value),
@@ -50,19 +55,21 @@ const cli = meow(
 if (cli.flags.h) {
     cli.showHelp();
 } else {
+    const dataProvider = cli.flags.basic ? 'none' : cli.flags.dataProvider;
+    const authProvider = cli.flags.basic ? 'none' : cli.flags.authProvider;
+    const install = cli.flags.basic ? 'skip' : cli.flags.install;
+    const resources =
+        cli.flags.basic || cli.flags.resource.includes('skip')
+            ? []
+            : cli.flags.resource;
+
     render(
         <App
             name={cli.input.length > 0 ? cli.input[0] : undefined}
-            dataProvider={cli.flags.dataProvider}
-            authProvider={cli.flags.authProvider}
-            resources={
-                cli.flags.resource.includes('skip')
-                    ? []
-                    : cli.flags.resource.length > 0
-                      ? cli.flags.resource
-                      : undefined
-            }
-            install={cli.flags.install}
+            dataProvider={dataProvider}
+            authProvider={authProvider}
+            resources={resources}
+            install={install}
         />
     );
 }