Enable plugin against all files if all option is on

See https://flow.org/en/docs/config/options/#toc-all-boolean

Fix #11

flowtype/commands/base.py

@@ -1,7 +1,8 @@
 import sublime
 import sublime_plugin
 
-from ..helpers import is_js_source, find_in_parent_folders, get_flow_bin
+from ..helpers import (find_in_parent_folders, get_flow_bin,
+                       has_all_config_enabled, is_js_source)
 
 
 class BaseCommand(sublime_plugin.TextCommand):
@@ -57,8 +58,13 @@ def check_thread(self, thread, i=0, dir=1):
 
     def is_enabled(self):
         """Enable the command only on Javascript files and has flow pragma."""
+        file_path = self.active_window.extract_variables()["file_path"]
         content = self.get_content()
-        pragma = "// @flow" in content or "/* @flow */" in content
+        pragma = (
+            "// @flow" in content
+            or "/* @flow */" in content
+            or has_all_config_enabled(file_path)
+        )
 
         return is_js_source(self.view) and pragma
 

flowtype/helpers.py

@@ -4,6 +4,7 @@
 import subprocess
 import time
 from collections import namedtuple
+from configparser import RawConfigParser
 
 import sublime
 
@@ -144,6 +145,16 @@ def get_flow_bin(file_path):
     return flow_bin
 
 
+def has_all_config_enabled(file_path):
+    """Return the presence of `all=true` in flowconfig."""
+    flowconfig_path = find_in_parent_folders(".flowconfig", file_path)
+
+    configParser = RawConfigParser()
+    configParser.read(os.path.join(flowconfig_path, ".flowconfig"))
+
+    return configParser.getboolean("options", "all")
+
+
 _hdr_pat = re.compile("^@@ -(\d+),?(\d+)? \+(\d+),?(\d+)? @@$")