fix(main): fix error occured when first commit (close #3)

#3

Author: isuke

git-consistent

@@ -93,4 +93,5 @@ try {
   }
 } catch (e) {
   console.error(`${colors.error}${e.message}${colors.reset}`)
+  e.status ? process.exit(e.status) : process.exit(1)
 }

lib/main.js

@@ -9,9 +9,18 @@ const colors = require('./colors')
 // Functions
 //
 const getCurrentBranchName = () => {
-  return execSync('git rev-parse --abbrev-ref HEAD')
-    .toString()
-    .trim()
+  try {
+    return execSync('git rev-parse --abbrev-ref HEAD 2> /dev/null')
+      .toString()
+      .trim()
+  } catch (e) {
+    // it is First Commit
+    if (e.status === 128) {
+      return ''
+    } else {
+      throw e
+    }
+  }
 }
 
 const branchText = (definition) => {