added tab-indent setting

packages/codemirror/codemirror.mjs

@@ -1,7 +1,7 @@
 import { closeBrackets } from '@codemirror/autocomplete';
 export { toggleComment, toggleBlockComment, toggleLineComment, toggleBlockCommentByLine } from '@codemirror/commands';
 // import { search, highlightSelectionMatches } from '@codemirror/search';
-import { history } from '@codemirror/commands';
+import { history, indentWithTab } from '@codemirror/commands';
 import { javascript } from '@codemirror/lang-javascript';
 import { defaultHighlightStyle, syntaxHighlighting, bracketMatching } from '@codemirror/language';
 import { Compartment, EditorState, Prec } from '@codemirror/state';
@@ -37,6 +37,7 @@ const extensions = {
   isActiveLineHighlighted: (on) => (on ? [highlightActiveLine(), highlightActiveLineGutter()] : []),
   isFlashEnabled,
   keybindings,
+  isTabIndentationEnabled: (on) => (on ? keymap.of([indentWithTab]) : []),
 };
 const compartments = Object.fromEntries(Object.keys(extensions).map((key) => [key, new Compartment()]));
 
@@ -51,6 +52,7 @@ export const defaultSettings = {
   isFlashEnabled: true,
   isTooltipEnabled: false,
   isLineWrappingEnabled: false,
+  isTabIndentationEnabled: false,
   theme: 'strudelTheme',
   fontFamily: 'monospace',
   fontSize: 18,