in app/ItemView/CodeMirrorContainer.tsx [56:67]
constructor(props: CodeMirrorProps & StyledComponentProps) {
super(props);
this.state = {
startH: -1,
startY: -1,
};
this.onDragHandler = this.onDragHandler.bind(this);
this.onDragRelease = this.onDragRelease.bind(this);
this.startDraggingHandler = this.startDraggingHandler.bind(this);
}