Wrap editor code in DOMContentLoaded

public/editor.js

@@ -2,6 +2,7 @@ import {EditorView, gutter, keymap, lineNumbers} from "@codemirror/view"
 import {Compartment, EditorState, Facet, SelectionRange} from "@codemirror/state"
 import {indentLess} from "@codemirror/commands";
 
+document.addEventListener('DOMContentLoaded', () => {
     EditorView.theme({}, {dark: true})
 
     let editorsjs = []
@@ -103,7 +104,10 @@ function changeBySelectedLine(state, f) {
                 line = state.doc.lineAt(line.number + 1)
             }
             let changeSet = state.changes(changes)
-        return {changes, range: new SelectionRange(changeSet.mapPos(range.anchor, 1), changeSet.mapPos(range.head, 1))}
+            return {
+                changes,
+                range: new SelectionRange(changeSet.mapPos(range.anchor, 1), changeSet.mapPos(range.head, 1))
+            }
         })
     }
 
@@ -155,3 +159,4 @@ document.querySelector('form#create').onsubmit = () => {
     document.onsubmit = () => {
         window.onbeforeunload = null;
     }
+})