Experimental warning

[fprijate]

Hi

Using nwjs-v0.30.5-win-x64.
Following error happens:

(node:8140) ExperimentalWarning: The fs.promises API is experimental
writeOut @ internal/process/warning.js:18
output @ internal/process/warning.js:69
process.on @ internal/process/warning.js:100
emit @ VM20 events.js:182
(anonymous) @ internal/process/warning.js:74
_tickCallback @ internal/process/next_tick.js:61

internal/process/warning.js:

function writeOut(message) {
   if (console && typeof console.error === 'function')
      return console.error(message);
   process._rawDebug(message);
 }

[Christywl]

I can reproduce this issue with nwjs-sdk-v0.30.5.
const fsPromises = require('fs').promises;