Merge pull request atom#18134 from atom/revert-17774-fb-mdt-atomic-config-saves

Fix atom#18118 by reverting PR atom#17774: "Write config file atomically"

Author: daviwil

src/config-file.js

@@ -6,7 +6,6 @@ const {watchPath} = require('./path-watcher')
 const CSON = require('season')
 const Path = require('path')
 const async = require('async')
-const temp = require('temp')
 
 const EVENT_TYPES = new Set([
   'created',
@@ -38,20 +37,18 @@ class ConfigFile {
     this.reloadCallbacks = []
 
     // Use a queue to prevent multiple concurrent write to the same file.
-    const writeQueue = async.queue((data, callback) => {
-      (async () => {
-        try {
-          await writeCSONFileAtomically(this.path, data)
-        } catch (error) {
+    const writeQueue = async.queue((data, callback) =>
+      CSON.writeFile(this.path, data, error => {
+        if (error) {
           this.emitter.emit('did-error', dedent `
             Failed to write \`${Path.basename(this.path)}\`.
 
             ${error.message}
           `)
         }
         callback()
-      })()
-    })
+      })
+    )
 
     this.requestLoad = _.debounce(() => this.reload(), 200)
     this.requestSave = _.debounce((data) => writeQueue.push(data), 200)
@@ -119,27 +116,3 @@ class ConfigFile {
     })
   }
 }
-
-function writeCSONFile (path, data) {
-  return new Promise((resolve, reject) => {
-    CSON.writeFile(path, data, error => {
-      if (error) reject(error)
-      else resolve()
-    })
-  })
-}
-
-async function writeCSONFileAtomically (path, data) {
-  const tempPath = temp.path()
-  await writeCSONFile(tempPath, data)
-  await rename(tempPath, path)
-}
-
-function rename (oldPath, newPath) {
-  return new Promise((resolve, reject) => {
-    fs.rename(oldPath, newPath, error => {
-      if (error) reject(error)
-      else resolve()
-    })
-  })
-}