@@ -609,7 +609,7 @@ export class MonacoAdapter implements IEditorAdapter {
609609
610610 /** If no change information received */
611611 if ( ! ev . changes || ev . changes . length === 0 ) {
612- const op = new TextOperation ( ) . retain ( contentLength , null ) ;
612+ const op = new TextOperation ( ) . retain ( contentLength ) ;
613613 this . _trigger ( EditorAdapterEvent . Change , {
614614 operation : op ,
615615 inverse : op ,
@@ -705,8 +705,8 @@ export class MonacoAdapter implements IEditorAdapter {
705705 const retain = rangeOffset - skippedChars ;
706706
707707 try {
708- mainOp = mainOp . retain ( retain , null ) ;
709- reverseOp = reverseOp . retain ( retain , null ) ;
708+ mainOp = mainOp . retain ( retain ) ;
709+ reverseOp = reverseOp . retain ( retain ) ;
710710 } catch ( err ) {
711711 this . _trigger ( EditorAdapterEvent . Error , {
712712 err,
@@ -718,26 +718,23 @@ export class MonacoAdapter implements IEditorAdapter {
718718
719719 if ( ! text && ! range . isEmpty ( ) ) {
720720 mainOp = mainOp . delete ( rangeLength ) ;
721- reverseOp = reverseOp . insert (
722- this . _getPreviousContentInRange ( range ) ,
723- null
724- ) ;
721+ reverseOp = reverseOp . insert ( this . _getPreviousContentInRange ( range ) ) ;
725722 } else if ( text && ! range . isEmpty ( ) ) {
726- mainOp = mainOp . delete ( rangeLength ) . insert ( text , null ) ;
723+ mainOp = mainOp . delete ( rangeLength ) . insert ( text ) ;
727724 reverseOp = reverseOp
728- . insert ( this . _getPreviousContentInRange ( range ) , null )
725+ . insert ( this . _getPreviousContentInRange ( range ) )
729726 . delete ( text ) ;
730727 } else {
731- mainOp = mainOp . insert ( text , null ) ;
728+ mainOp = mainOp . insert ( text ) ;
732729 reverseOp = reverseOp . delete ( text ) ;
733730 }
734731
735732 skippedChars = skippedChars + retain + rangeLength ;
736733 }
737734
738735 try {
739- mainOp = mainOp . retain ( contentLength - skippedChars , null ) ;
740- reverseOp = reverseOp . retain ( contentLength - skippedChars , null ) ;
736+ mainOp = mainOp . retain ( contentLength - skippedChars ) ;
737+ reverseOp = reverseOp . retain ( contentLength - skippedChars ) ;
741738 } catch ( err ) {
742739 this . _trigger ( EditorAdapterEvent . Error , {
743740 err,
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