fix: don't do git log on non-existent file

closes #4008

src/node/utils/getGitTimestamp.ts

@@ -8,20 +8,24 @@ export function getGitTimestamp(file: string) {
   const cached = cache.get(file)
   if (cached) return cached
 
+  if (!fs.existsSync(file)) return 0
+
   return new Promise<number>((resolve, reject) => {
-    const cwd = dirname(file)
-    if (!fs.existsSync(cwd)) return resolve(0)
-    const fileName = basename(file)
-    const child = spawn('git', ['log', '-1', '--pretty="%ai"', fileName], {
-      cwd
-    })
+    const child = spawn(
+      'git',
+      ['log', '-1', '--pretty="%ai"', basename(file)],
+      { cwd: dirname(file) }
+    )
+
     let output = ''
     child.stdout.on('data', (d) => (output += String(d)))
+
     child.on('close', () => {
       const timestamp = +new Date(output)
       cache.set(file, timestamp)
       resolve(timestamp)
     })
+
     child.on('error', reject)
   })
 }