fix: set fontFamily to monospace to try fixing caret misplacement

src/constants/editor.ts

@@ -0,0 +1,103 @@
+import { EditorProps } from '@monaco-editor/react'
+import { languages } from 'monaco-editor'
+
+export const EDITOR_THEME_DARK = 'vs-dark'
+export const EDITOR_THEME_LIGHT = 'github'
+
+export const EDITOR_OPTIONS: EditorProps['options'] = {
+  fontSize: 14,
+  fontWeight: 'bold',
+  fontFamily: 'monospace',
+  'semanticHighlighting.enabled': true,
+  lineHeight: 1.6,
+  minimap: {
+    enabled: false,
+  },
+  scrollBeyondLastLine: false,
+  renderWhitespace: 'selection',
+  cursorBlinking: 'solid',
+  formatOnPaste: true,
+  insertSpaces: true,
+  tabSize: 2,
+  lineNumbers: 'off',
+  padding: {
+    top: 8,
+    bottom: 8,
+  },
+}
+
+export const EDITOR_LANGUAGE_ROUTINGA: languages.IMonarchLanguage = {
+  // set defaultToken as `invalid` to turn on debug mode
+  // defaultToken: 'invalid',
+  ignoreCase: false,
+  keywords: [
+    'dip',
+    'direct',
+    'domain',
+    'dport',
+    'fallback',
+    'geoip',
+    'must_rules',
+    'geosite',
+    'ipversion',
+    'l4proto',
+    'mac',
+    'pname',
+    'qname',
+    'request',
+    'response',
+    'routing',
+    'sip',
+    'sport',
+    'tcp',
+    'udp',
+    'upstream',
+  ],
+
+  escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
+
+  symbols: /[->&!:,]+/,
+
+  operators: ['&&', '!'],
+
+  tokenizer: {
+    root: [
+      [/@[a-zA-Z]\w*/, 'tag'],
+      [/[a-zA-Z]\w*/, { cases: { '@keywords': 'keyword', '@default': 'identifier' } }],
+
+      { include: '@whitespace' },
+
+      [/[{}()]/, '@brackets'],
+
+      [/@symbols/, { cases: { '@operators': 'operator', '@default': '' } }],
+
+      [/\d+/, 'number'],
+
+      [/[,:]/, 'delimiter'],
+
+      [/"([^"\\]|\\.)*$/, 'string.invalid'],
+      [/'([^'\\]|\\.)*$/, 'string.invalid'],
+      [/"/, 'string', '@string_double'],
+      [/'/, 'string', '@string_single'],
+    ],
+
+    string_double: [
+      [/[^\\"]+/, 'string'],
+      [/@escapes/, 'string.escape'],
+      [/\\./, 'string.escape.invalid'],
+      [/"/, 'string', '@pop'],
+    ],
+
+    string_single: [
+      [/[^\\']+/, 'string'],
+      [/@escapes/, 'string.escape'],
+      [/\\./, 'string.escape.invalid'],
+      [/'/, 'string', '@pop'],
+    ],
+
+    whitespace: [
+      [/[ \t\r\n]+/, 'white'],
+      [/#.*$/, 'comment'],
+    ],
+  },
+}