JS to TS : simulator/src/data/undo.ts

src/simulator/src/data/undo.js → src/simulator/src/data/undo.ts

@@ -1,51 +1,59 @@
 /* eslint-disable import/no-cycle */
-/**
- * Function to restore copy from backup
- * @param {Scope=} scope - The circuit on which undo is called
- * @category data
- */
 import { layoutModeGet } from '../layoutMode'
 import Scope, { scopeList } from '../circuit'
 import { loadScope } from './load'
 import { updateRestrictedElementsInScope } from '../restrictedElementDiv'
 import { forceResetNodesSet } from '../engine'
+
+// Declare global variables
+declare let globalScope: Scope
+declare let loading: boolean
+
 /**
- * Function called to generate a prompt to save an image
- * @param {Scope=} - the circuit in which we want to call undo
+ * Function to restore copy from backup
+ * @param scope - The circuit on which undo is called
  * @category data
- * @exports undo
  */
-export default function undo(scope = globalScope) {
+export default function undo(scope: Scope = globalScope): void {
     if (layoutModeGet()) return
     if (scope.backups.length < 2) return
-    const backupOx = globalScope.ox
-    const backupOy = globalScope.oy
-    const backupScale = globalScope.scale
+
+    const backupOx: number = globalScope.ox
+    const backupOy: number = globalScope.oy
+    const backupScale: number = globalScope.scale
+
     globalScope.ox = 0
     globalScope.oy = 0
-    const tempScope = new Scope(scope.name)
+
+    const tempScope: Scope = new Scope(scope.name)
     loading = true
-    const undoData = scope.backups.pop()
+
+    const undoData: string = scope.backups.pop()!
     scope.history.push(undoData)
-    scope.backups.length !== 0 &&
+
+    if (scope.backups.length !== 0) {
         loadScope(
             tempScope,
             JSON.parse(scope.backups[scope.backups.length - 1])
         )
+    }
+
     tempScope.backups = scope.backups
     tempScope.history = scope.history
     tempScope.id = scope.id
     tempScope.name = scope.name
     tempScope.testbenchData = scope.testbenchData
+
     scopeList[scope.id] = tempScope
     globalScope = tempScope
+
     globalScope.ox = backupOx
     globalScope.oy = backupOy
     globalScope.scale = backupScale
+
     loading = false
     forceResetNodesSet(true)
 
-    // Updated restricted elements
+    // Update restricted elements
     updateRestrictedElementsInScope()
-}
-// for html file
+}