test[nodeJS] 045 File Stat (async)

"045-4 Reading device info with #stat:with:"
NodeJS fs stat: (TestPath, 'Sample.txt') with: [:error :st| | stats | 
   (error isNil) ifFalse: [ ^self error: '045-4 ' ,error].
   stats := NodeStats @ st.
   "self print: '045-4 Sample.txt has ', stats size,' bytes'."   
].

"045-5 Reading device info with #fstat:with:"
| fs stats |
fs := NodeJS fs.
fs open: (TestPath, 'Sample.txt') flags:#r with: [:error :fd| 
   error isNil ifFalse: [ ^self error: '045-5 ' ,error].
   fs fstat: fd with:[:err :st|
      err isNil ifFalse:[ ^self error:'045-5 ', err].
      stats := NodeStats @ st.
      "self print: '045-5 sample.txt has ', stats size,' bytes'."
      fs closeSync: fd. 
   ]  
].

"045-6 Reading device info with #lstat:with:"
NodeJS fs lstat: (TestPath, 'Sample.txt') with: [:error :st| | stats | 
   (error isNil) ifFalse: [ ^self error: '045-6 ' ,error].
   stats := NodeStats @ st.
   "self print: '045-6 Sample.txt has ', stats size,' bytes'."
].