fix(nodejs): apply style even if node version is unavailable (#4713)

* correct nodejs color

* Update src/modules/nodejs.rs

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

* Update src/modules/nodejs.rs

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

* fix: removed unecessary unwraps

* test: no node installed

* test: no node installed

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

src/modules/nodejs.rs

@@ -45,7 +45,7 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
                 "style" => {
                     let engines_version = get_engines_version(context);
                     let in_engines_range =
-                        check_engines_version(nodejs_version.deref().as_ref()?, engines_version);
+                        check_engines_version(nodejs_version.as_deref(), engines_version);
                     if in_engines_range {
                         Some(Ok(config.style))
                     } else {
@@ -92,11 +92,12 @@ fn get_engines_version(context: &Context) -> Option<String> {
     Some(raw_version.to_string())
 }
 
-fn check_engines_version(nodejs_version: &str, engines_version: Option<String>) -> bool {
-    if engines_version.is_none() {
-        return true;
-    }
-    let r = match VersionReq::parse(&engines_version.unwrap()) {
+fn check_engines_version(nodejs_version: Option<&str>, engines_version: Option<String>) -> bool {
+    let (nodejs_version, engines_version) = match (nodejs_version, engines_version) {
+        (Some(nv), Some(ev)) => (nv, ev),
+        _ => return true,
+    };
+    let r = match VersionReq::parse(&engines_version) {
         Ok(r) => r,
         Err(_e) => return true,
     };
@@ -270,4 +271,16 @@ mod tests {
         assert_eq!(expected, actual);
         dir.close()
     }
+    #[test]
+    fn no_node_installed() -> io::Result<()> {
+        let dir = tempfile::tempdir()?;
+        File::create(dir.path().join("index.js"))?.sync_all()?;
+        let actual = ModuleRenderer::new("nodejs")
+            .path(dir.path())
+            .cmd("node --version", None)
+            .collect();
+        let expected = Some(format!("via {}", Color::Green.bold().paint(" ")));
+        assert_eq!(expected, actual);
+        dir.close()
+    }
 }