Use better names for feature flag and config option

.travis.yml

@@ -10,7 +10,7 @@ rvm:
   - ruby-2.5
   - ruby-head
 env:
-  - ENABLE_EXPERIMENTAL=1
+  - BOOTSNAP_EXPERIMENTAL=1
   - ''
 
 matrix:

lib/bootsnap.rb

@@ -14,8 +14,9 @@ def self.setup(
     disable_trace: false,
     compile_cache_iseq: true,
     compile_cache_yaml: true,
-    exclude_dirs: nil
+    exclude_paths: nil
   )
+
     if autoload_paths_cache && !load_path_cache
       raise(InvalidConfiguration, "feature 'autoload_paths_cache' depends on feature 'load_path_cache'")
     end
@@ -26,7 +27,7 @@ def self.setup(
       cache_path:       cache_dir + '/bootsnap-load-path-cache',
       development_mode: development_mode,
       active_support:   autoload_paths_cache,
-      exclude_dirs:     exclude_dirs
+      exclude_paths:    exclude_paths
     ) if load_path_cache
 
     Bootsnap::CompileCache.setup(

lib/bootsnap/load_path_cache.rb

@@ -29,15 +29,15 @@ module LoadPathCache
 
     class << self
       attr_reader(:load_path_cache, :autoload_paths_cache,
-        :loaded_features_index, :realpath_cache, :exclude_dirs)
+        :loaded_features_index, :realpath_cache, :exclude_paths)
 
-      def setup(cache_path:, development_mode:, active_support: true, exclude_dirs: nil)
+      def setup(cache_path:, development_mode:, active_support: true, exclude_paths: nil)
         unless supported?
           warn("[bootsnap/setup] Load path caching is not supported on this implementation of Ruby") if $VERBOSE
           return
         end
 
-        @exclude_dirs = exclude_dirs
+        @exclude_paths = exclude_paths
         store = Store.new(cache_path)
 
         @loaded_features_index = LoadedFeaturesIndex.new

lib/bootsnap/load_path_cache/path_scanner.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require_relative('../explicit_require')
+require 'bootsnap/dirscanner'
 
 module Bootsnap
   module LoadPathCache
@@ -16,7 +17,7 @@ module PathScanner
         ''
       end
 
-      def self.call(path, excluded_paths: Bootsnap::LoadPathCache.exclude_dirs)
+      def self.call(path, excluded_paths: Bootsnap::LoadPathCache.exclude_paths)
         path = path.to_s
 
         relative_slice = (path.size + 1)..-1
@@ -45,8 +46,7 @@ def self.call(path, excluded_paths: Bootsnap::LoadPathCache.exclude_dirs)
 
         excluded = excluded_paths || []
 
-        if ENV['ENABLE_EXPERIMENTAL']
-          require 'bootsnap/dirscanner'
+        if ENV['BOOTSNAP_EXPERIMENTAL']
           DirScanner.scan(path, excluded: excluded) do |path|
             process_path.(path)
           end