[flow][refactor][EZ] Files.init ~> Files.ordered_and_unordered_lib_paths

Summary:
Unlike what the name currently suggests, it doesn't init anything. This diff renames it to something much more precise.

Changelog: [internal]

Reviewed By: panagosg7

Differential Revision: D69872227

fbshipit-source-id: ca7527ecfda2e7ac80a2f0e7978cd10104845815

Author: SamChou19815

src/codemods/utils/codemod_runner.ml

@@ -687,7 +687,7 @@ module UntypedRunner (C : UNTYPED_RUNNER_CONFIG) : STEP_RUNNER = struct
     Profiling_js.with_profiling_lwt ~label:"Codemod" ~should_print_summary (fun _profiling ->
         let file_options = Options.file_options options in
         let all = Options.all options in
-        let (_ordered_libs, libs) = Files.init file_options in
+        let (_ordered_libs, libs) = Files.ordered_and_unordered_lib_paths file_options in
 
         (* creates a closure that lists all files in the given root, returned in chunks *)
         let filename_set = get_target_filename_set ~options:file_options ~libs ~all roots in

src/commands/lsCommand.ml

@@ -248,7 +248,7 @@ let main
   let options =
     make_options ~flowconfig ~root ~ignore_flag ~include_flag ~untyped_flag ~declaration_flag
   in
-  let (_, libs) = Files.init options in
+  let (_, libs) = Files.ordered_and_unordered_lib_paths options in
   (* `flow ls` and `flow ls dir` will list out all the flow files. We want to include lib files, so
    * we pass in ~libs:SSet.empty, which means we won't filter out any lib files *)
   let next_files =

src/common/files.ml

@@ -92,8 +92,6 @@ let implicitly_include_root options = options.implicitly_include_root
 
 let includes options = options.includes
 
-let lib_paths options = options.lib_paths
-
 let module_declaration_dirnames options = options.module_declaration_dirnames
 
 let module_file_exts options = options.module_file_exts
@@ -546,7 +544,7 @@ let is_in_flowlib (options : options) : string -> bool =
     let root = File_path.make root_str in
     is_prefix (File_path.to_string root)
 
-let init (options : options) =
+let ordered_and_unordered_lib_paths (options : options) =
   let node_module_filter = is_node_module options in
   let libs = options.lib_paths in
   let (libs, filter) =

src/common/files.mli

@@ -43,8 +43,6 @@ val implicitly_include_root : options -> bool
 
 val includes : options -> Path_matcher.t
 
-val lib_paths : options -> File_path.t list
-
 val module_declaration_dirnames : options -> string list
 
 val module_file_exts : options -> string list
@@ -108,7 +106,7 @@ val is_in_flowlib : options -> string -> bool
 
 val get_all_watched_extensions : options -> SSet.t
 
-val init : options -> string list * SSet.t
+val ordered_and_unordered_lib_paths : options -> string list * SSet.t
 
 (* regexp for Filename constants *)
 val dir_sep : Str.regexp

src/server/rechecker/recheck_updates.ml

@@ -202,7 +202,7 @@ let process_updates ?(skip_incompatible = false) ~options ~libs updates =
   let file_options = Options.file_options options in
   let all_libs =
     let known_libs = libs in
-    let (_, maybe_new_libs) = Files.init file_options in
+    let (_, maybe_new_libs) = Files.ordered_and_unordered_lib_paths file_options in
     SSet.union known_libs maybe_new_libs
   in
   let root = Options.root options in

src/services/inference/types_js.ml

@@ -2164,7 +2164,7 @@ let init_from_scratch ~profiling ~workers options =
    * However making this change is likely going to be a breaking change for people with conflicting
    * libraries
    *)
-  let (ordered_libs, libs) = Files.init file_options in
+  let (ordered_libs, libs) = Files.ordered_and_unordered_lib_paths file_options in
   let next_files_for_parse =
     make_next_files ~libs ~file_options ~include_libdef:true (Options.root options)
   in
@@ -2413,7 +2413,7 @@ let reinit_full_check
   let%lwt env =
     with_transaction "partial-reinit" @@ fun transaction reader ->
     let file_options = Options.file_options options in
-    let (ordered_libs, _) = Files.init file_options in
+    let (ordered_libs, _) = Files.ordered_and_unordered_lib_paths file_options in
 
     let%lwt (env, libs_ok) =
       init_with_initial_state