Yarn global upgrade

src/main.rs

@@ -214,6 +214,11 @@ fn run() -> Result<(), Error> {
         }
     }
 
+    if let Some(yarn) = utils::which("yarn") {
+        terminal.print_separator("Yarn");
+        yarn_global_update(&yarn).report("Yarn", &mut reports);
+    }
+
     if let Some(apm) = utils::which("apm") {
         terminal.print_separator("Atom Package Manager");
         run_apm(&apm).report("Atom Package Manager", &mut reports);

src/steps.rs

@@ -26,6 +26,16 @@ pub fn run_emacs(emacs: &PathBuf, init: &PathBuf) -> Result<(), failure::Error>
     Ok(())
 }
 
+pub fn yarn_global_update(yarn: &PathBuf) -> Result<(), failure::Error> {
+    Command::new(&yarn)
+        .args(&["global", "upgrade", "-s"])
+        .spawn()?
+        .wait()?
+        .check()?;
+
+    Ok(())
+}
+
 pub fn run_apm(apm: &PathBuf) -> Result<(), failure::Error> {
     Command::new(&apm)
         .args(&["upgrade", "--confirm=false"])