Do not write to file or update code editor a ridiculous amount of times and update them both at the most appropriate moments. (#4479)

* Reapply "Deflake project settings override on desktop (#4370)" (#4450)

This reverts commit b11040c23c.

* Refactor writeToFile and updateCodeEditor to happen at appropriate times

* Turn error into warning about out of date AST.

* Rename setUp to setup

* ONLY reload current file on changes.

* If value is falsey then don't try to executeAst

* Fix up code based selections after constraints

* Correct any last missing code mods

* Update src/clientSideScene/ClientSideSceneComp.tsx

Remove eslint rule no-floating-promises

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

* Fixups

* Fix FileTree failing

---------

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

src/lang/codeManager.ts

@@ -7,6 +7,8 @@ import toast from 'react-hot-toast'
 import { editorManager } from 'lib/singletons'
 import { Annotation, Transaction } from '@codemirror/state'
 import { KeyBinding } from '@codemirror/view'
+import { recast, Program } from 'lang/wasm'
+import { err } from 'lib/trap'
 
 const PERSIST_CODE_KEY = 'persistCode'
 
@@ -121,24 +123,39 @@ export default class CodeManager {
       // Only write our buffer contents to file once per second. Any faster
       // and file-system watchers which read, will receive empty data during
       // writes.
+
       clearTimeout(this.timeoutWriter)
       this.writeCausedByAppCheckedInFileTreeFileSystemWatcher = true
-      this.timeoutWriter = setTimeout(() => {
-        // Wait one event loop to give a chance for params to be set
-        // Save the file to disk
-        this._currentFilePath &&
+
+      return new Promise((resolve, reject) => {
+        this.timeoutWriter = setTimeout(() => {
+          if (!this._currentFilePath)
+            return reject(new Error('currentFilePath not set'))
+
+          // Wait one event loop to give a chance for params to be set
+          // Save the file to disk
           window.electron
             .writeFile(this._currentFilePath, this.code ?? '')
+            .then(resolve)
             .catch((err: Error) => {
               // TODO: add tracing per GH issue #254 (https://github.com/KittyCAD/modeling-app/issues/254)
               console.error('error saving file', err)
               toast.error('Error saving file, please check file permissions')
+              reject(err)
             })
-      }, 1000)
+        }, 1000)
+      })
     } else {
       safeLSSetItem(PERSIST_CODE_KEY, this.code)
     }
   }
+
+  async updateEditorWithAstAndWriteToFile(ast: Program) {
+    const newCode = recast(ast)
+    if (err(newCode)) return
+    this.updateCodeStateEditor(newCode)
+    await this.writeToFile()
+  }
 }
 
 function safeLSGetItem(key: string) {