#N/A: Add react_native_command_unrecognized rule

README.md

@@ -210,6 +210,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `python_command` – prepends `python` when you trying to run not executable/without `./` python script;
 * `python_execute` – appends missing `.py` when executing Python files;
 * `quotation_marks` – fixes uneven usage of `'` and `"` when containing args';
+* `react_native_command_unrecognized` – fixes unrecognized `react-native` commands;
 * `rm_dir` – adds `-rf` when you trying to remove directory;
 * `sed_unterminated_s` – adds missing '/' to `sed`'s `s` commands;
 * `sl_ls` – changes `sl` to `ls`;

tests/rules/test_react_native_command_unrecognized.py

@@ -0,0 +1,46 @@
+import pytest
+from thefuck.rules.react_native_command_unrecognized import match, \
+    get_new_command
+from tests.utils import Command
+
+stderr = 'Command `{}` unrecognized'.format
+
+stdout = '''
+Usage: react-native <command>
+
+Commands:
+  - start: starts the webserver
+  - bundle: builds the javascript bundle for offline use
+  - unbundle: builds javascript as "unbundle" for offline use
+  - new-library: generates a native library bridge
+  - android: generates an Android project for your app
+  - run-android: builds your app and starts it on a connected Android emulator or device
+  - log-android: print Android logs
+  - run-ios: builds your app and starts it on iOS simulator
+  - log-ios: print iOS logs
+  - upgrade: upgrade your app's template files to the latest version; run this after updating the react-native version in your package.json and running npm install
+  - link: link a library
+'''
+
+
+@pytest.mark.parametrize('command', [
+    Command('react-native star', stderr=stderr('star')),
+    Command('react-native android-logs', stderr=stderr('android-logs'))])
+def test_match(command):
+    assert match(command)
+
+
+@pytest.mark.parametrize('command', [
+    Command('gradle star', stderr=stderr('star')),
+    Command('react-native start')])
+def test_not_match(command):
+    assert not match(command)
+
+
+@pytest.mark.parametrize('command, result', [
+    (Command('react-native star', stdout, stderr('star')),
+     'react-native start'),
+    (Command('react-native logsandroid -f', stdout, stderr('logsandroid')),
+     'react-native log-android -f')])
+def test_get_new_command(command, result):
+    assert get_new_command(command)[0] == result

thefuck/const.py

@@ -32,7 +32,7 @@ DEFAULT_SETTINGS = {'rules': DEFAULT_RULES,
                     'history_limit': None,
                     'alter_history': True,
                     'wait_slow_command': 15,
-                    'slow_commands': ['lein'],
+                    'slow_commands': ['lein', 'react-native'],
                     'env': {'LC_ALL': 'C', 'LANG': 'C', 'GIT_TRACE': '1'}}
 
 ENV_TO_ATTR = {'THEFUCK_RULES': 'rules',

thefuck/rules/react_native_command_unrecognized.py

@@ -0,0 +1,14 @@
+import re
+from thefuck.utils import for_app, replace_command
+
+
+@for_app('react-native')
+def match(command):
+    return re.match(r'Command `.*` unrecognized', command.stderr)
+
+
+def get_new_command(command):
+    misspelled_command = re.findall(r'Command `(.*)` unrecognized',
+                                    command.stderr)[0]
+    commands = re.findall(r'  - (.*): .*\n', command.stdout)
+    return replace_command(command, misspelled_command, commands)