'Enable Bracket Matching' option in Codemirror

packages/codemirror/codemirror.mjs

@@ -2,7 +2,7 @@ import { closeBrackets } from '@codemirror/autocomplete';
 // import { search, highlightSelectionMatches } from '@codemirror/search';
 import { history } from '@codemirror/commands';
 import { javascript } from '@codemirror/lang-javascript';
-import { defaultHighlightStyle, syntaxHighlighting } from '@codemirror/language';
+import { defaultHighlightStyle, syntaxHighlighting, bracketMatching } from '@codemirror/language';
 import { Compartment, EditorState, Prec } from '@codemirror/state';
 import {
   EditorView,
@@ -24,6 +24,7 @@ import { persistentAtom } from '@nanostores/persistent';
 
 const extensions = {
   isLineWrappingEnabled: (on) => (on ? EditorView.lineWrapping : []),
+  isBracketMatchingEnabled: (on) => (on ? bracketMatching() : []),
   isLineNumbersDisplayed: (on) => (on ? lineNumbers() : []),
   theme,
   isAutoCompletionEnabled,
@@ -37,6 +38,7 @@ const compartments = Object.fromEntries(Object.keys(extensions).map((key) => [ke
 
 export const defaultSettings = {
   keybindings: 'codemirror',
+  isBracketMatchingEnabled: false,
   isLineNumbersDisplayed: true,
   isActiveLineHighlighted: false,
   isAutoCompletionEnabled: false,
@@ -290,6 +292,9 @@ export class StrudelMirror {
   setLineWrappingEnabled(enabled) {
     this.reconfigureExtension('isLineWrappingEnabled', enabled);
   }
+  setBracketMatchingEnabled(enabled) {
+    this.reconfigureExtension('isBracketMatchingEnabled', enabled);
+  }
   setLineNumbersDisplayed(enabled) {
     this.reconfigureExtension('isLineNumbersDisplayed', enabled);
   }

website/src/repl/Repl.css

@@ -64,3 +64,8 @@
 #code .cm-focused {
   outline: none;
 }
+
+#code .cm-matchingBracket {
+  text-decoration: underline 0.18rem;
+  text-underline-offset: 0.25rem;
+}

website/src/repl/panel/SettingsTab.jsx

@@ -77,6 +77,7 @@ export function SettingsTab({ started }) {
   const {
     theme,
     keybindings,
+    isBracketMatchingEnabled,
     isLineNumbersDisplayed,
     isPatternHighlightingEnabled,
     isActiveLineHighlighted,
@@ -137,6 +138,11 @@ export function SettingsTab({ started }) {
         ></ButtonGroup>
       </FormItem>
       <FormItem label="Code Settings">
+        <Checkbox
+          label="Enable bracket matching"
+          onChange={(cbEvent) => settingsMap.setKey('isBracketMatchingEnabled', cbEvent.target.checked)}
+          value={isBracketMatchingEnabled}
+        />
         <Checkbox
           label="Display line numbers"
           onChange={(cbEvent) => settingsMap.setKey('isLineNumbersDisplayed', cbEvent.target.checked)}

website/src/settings.mjs

@@ -7,6 +7,7 @@ export const defaultAudioDeviceName = 'System Standard';
 export const defaultSettings = {
   activeFooter: 'intro',
   keybindings: 'codemirror',
+  isBracketMatchingEnabled: false,
   isLineNumbersDisplayed: true,
   isActiveLineHighlighted: true,
   isAutoCompletionEnabled: false,
@@ -40,6 +41,7 @@ export function useSettings() {
   return {
     ...state,
     isZen: [true, 'true'].includes(state.isZen) ? true : false,
+    isBracketMatchingEnabled: [true, 'true'].includes(state.isBracketMatchingEnabled) ? true : false,
     isLineNumbersDisplayed: [true, 'true'].includes(state.isLineNumbersDisplayed) ? true : false,
     isActiveLineHighlighted: [true, 'true'].includes(state.isActiveLineHighlighted) ? true : false,
     isAutoCompletionEnabled: [true, 'true'].includes(state.isAutoCompletionEnabled) ? true : false,