feat(elm): Configure when the module is shown (#2341)

This makes it possible to configure when the elm module is shown
based on the contents of a directory. This should make it possible to
be a lot more granular when configuring the module.

2 files changed, 12 insertions, 13 deletions

diff --git a/src/configs/elm.rs b/src/configs/elm.rs
index 17dc35686..801622cf4 100644
--- a/src/configs/elm.rs
+++ b/src/configs/elm.rs
@@ -8,6 +8,9 @@ pub struct ElmConfig<'a> {
     pub symbol: &'a str,
     pub style: &'a str,
     pub disabled: bool,
+    pub detect_extensions: Vec<&'a str>,
+    pub detect_files: Vec<&'a str>,
+    pub detect_folders: Vec<&'a str>,
 }
 
 impl<'a> RootModuleConfig<'a> for ElmConfig<'a> {
@@ -17,6 +20,9 @@ impl<'a> RootModuleConfig<'a> for ElmConfig<'a> {
             symbol: "🌳 ",
             style: "cyan bold",
             disabled: false,
+            detect_extensions: vec!["elm"],
+            detect_files: vec!["elm.json", "elm-package.json", ".elm-version"],
+            detect_folders: vec!["elm-stuff"],
         }
     }
 }
diff --git a/src/modules/elm.rs b/src/modules/elm.rs
index b3ee43380..7ebd848f4 100644
--- a/src/modules/elm.rs
+++ b/src/modules/elm.rs
@@ -4,28 +4,21 @@ use crate::configs::elm::ElmConfig;
 use crate::formatter::StringFormatter;
 
 /// Creates a module with the current Elm version
-///
-/// Will display the Elm version if any of the following criteria are met:
-///     - The current directory contains a `elm.json` file
-///     - The current directory contains a `elm-package.json` file
-///     - The current directory contains a `.elm-version` file
-///     - The current directory contains a `elm-stuff` folder
-///     - The current directory contains a `*.elm` files
 pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
+    let mut module = context.new_module("elm");
+    let config: ElmConfig = ElmConfig::try_load(module.config);
+
     let is_elm_project = context
         .try_begin_scan()?
-        .set_files(&["elm.json", "elm-package.json", ".elm-version"])
-        .set_extensions(&["elm"])
-        .set_folders(&["elm-stuff"])
+        .set_files(&config.detect_files)
+        .set_extensions(&config.detect_extensions)
+        .set_folders(&config.detect_folders)
         .is_match();
 
     if !is_elm_project {
         return None;
     }
 
-    let mut module = context.new_module("elm");
-    let config: ElmConfig = ElmConfig::try_load(module.config);
-
     let parsed = StringFormatter::new(config.format).and_then(|formatter| {
         formatter
             .map_meta(|var, _| match var {